# configure.ac for GCC # Process this file with autoconf to generate a configuration script. # Copyright (C) 1997-2016 Free Software Foundation, Inc. #This file is part of GCC. #GCC is free software; you can redistribute it and/or modify it under #the terms of the GNU General Public License as published by the Free #Software Foundation; either version 3, or (at your option) any later #version. #GCC is distributed in the hope that it will be useful, but WITHOUT #ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or #FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License #for more details. #You should have received a copy of the GNU General Public License #along with GCC; see the file COPYING3. If not see #. # -------------------------------- # Initialization and sanity checks # -------------------------------- AC_PREREQ(2.64) AC_INIT AC_CONFIG_SRCDIR(tree.c) AC_CONFIG_HEADER(auto-host.h:config.in) gcc_version=`cat $srcdir/BASE-VER` # Determine the host, build, and target systems AC_CANONICAL_BUILD AC_CANONICAL_HOST AC_CANONICAL_TARGET # Determine the noncanonical host name, for Ada. ACX_NONCANONICAL_HOST # Determine the noncanonical target name, for directory use. ACX_NONCANONICAL_TARGET # Used for constructing correct paths for offload compilers. real_target_noncanonical=${target_noncanonical} accel_dir_suffix= # Determine the target- and build-specific subdirectories GCC_TOPLEV_SUBDIRS # Set program_transform_name AC_ARG_PROGRAM # Check for bogus environment variables. # Test if LIBRARY_PATH contains the notation for the current directory # since this would lead to problems installing/building glibc. # LIBRARY_PATH contains the current directory if one of the following # is true: # - one of the terminals (":" and ";") is the first or last sign # - two terminals occur directly after each other # - the path contains an element with a dot in it AC_MSG_CHECKING(LIBRARY_PATH variable) changequote(,)dnl case ${LIBRARY_PATH} in [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) library_path_setting="contains current directory" ;; *) library_path_setting="ok" ;; esac changequote([,])dnl AC_MSG_RESULT($library_path_setting) if test "$library_path_setting" != "ok"; then AC_MSG_ERROR([ *** LIBRARY_PATH shouldn't contain the current directory when *** building gcc. Please change the environment variable *** and run configure again.]) fi # Test if GCC_EXEC_PREFIX contains the notation for the current directory # since this would lead to problems installing/building glibc. # GCC_EXEC_PREFIX contains the current directory if one of the following # is true: # - one of the terminals (":" and ";") is the first or last sign # - two terminals occur directly after each other # - the path contains an element with a dot in it AC_MSG_CHECKING(GCC_EXEC_PREFIX variable) changequote(,)dnl case ${GCC_EXEC_PREFIX} in [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) gcc_exec_prefix_setting="contains current directory" ;; *) gcc_exec_prefix_setting="ok" ;; esac changequote([,])dnl AC_MSG_RESULT($gcc_exec_prefix_setting) if test "$gcc_exec_prefix_setting" != "ok"; then AC_MSG_ERROR([ *** GCC_EXEC_PREFIX shouldn't contain the current directory when *** building gcc. Please change the environment variable *** and run configure again.]) fi # ----------- # Directories # ----------- # Specify the local prefix local_prefix= AC_ARG_WITH(local-prefix, [AS_HELP_STRING([--with-local-prefix=DIR], [specifies directory to put local include])], [case "${withval}" in yes) AC_MSG_ERROR(bad value ${withval} given for local include directory prefix) ;; no) ;; *) local_prefix=$with_local_prefix ;; esac]) # Default local prefix if it is empty if test x$local_prefix = x; then local_prefix=/usr/local fi AC_ARG_WITH([native-system-header-dir], [ --with-native-system-header-dir=dir use dir as the directory to look for standard system header files in. Defaults to /usr/include.], [ case ${with_native_system_header_dir} in yes|no) AC_MSG_ERROR([bad value ${withval} given for --with-native-system-header-dir]) ;; /* | [[A-Za-z]]:[[\\/]]*) ;; *) AC_MSG_ERROR([--with-native-system-header-dir argument ${withval} must be an absolute directory]) ;; esac configured_native_system_header_dir="${withval}" ], [configured_native_system_header_dir=]) AC_ARG_WITH(build-sysroot, [AS_HELP_STRING([--with-build-sysroot=sysroot], [use sysroot as the system root during the build])], [if test x"$withval" != x ; then SYSROOT_CFLAGS_FOR_TARGET="--sysroot=$withval" fi], [SYSROOT_CFLAGS_FOR_TARGET=]) AC_SUBST(SYSROOT_CFLAGS_FOR_TARGET) if test "x$prefix" = xNONE; then test_prefix=/usr/local else test_prefix=$prefix fi if test "x$exec_prefix" = xNONE; then test_exec_prefix=$test_prefix else test_exec_prefix=$exec_prefix fi AC_ARG_WITH(sysroot, [AS_HELP_STRING([[--with-sysroot[=DIR]]], [search for usr/lib, usr/include, et al, within DIR])], [ case ${with_sysroot} in /) ;; */) with_sysroot=`echo $with_sysroot | sed 's,/$,,'` ;; esac case ${with_sysroot} in yes) TARGET_SYSTEM_ROOT='${exec_prefix}/${target_noncanonical}/sys-root' ;; *) TARGET_SYSTEM_ROOT=$with_sysroot ;; esac TARGET_SYSTEM_ROOT_DEFINE='-DTARGET_SYSTEM_ROOT=\"$(TARGET_SYSTEM_ROOT)\"' CROSS_SYSTEM_HEADER_DIR='$(TARGET_SYSTEM_ROOT)$${sysroot_headers_suffix}$(NATIVE_SYSTEM_HEADER_DIR)' case ${TARGET_SYSTEM_ROOT} in "${test_prefix}"|"${test_prefix}/"*|\ "${test_exec_prefix}"|"${test_exec_prefix}/"*|\ '${prefix}'|'${prefix}/'*|\ '${exec_prefix}'|'${exec_prefix}/'*) t="$TARGET_SYSTEM_ROOT_DEFINE -DTARGET_SYSTEM_ROOT_RELOCATABLE" TARGET_SYSTEM_ROOT_DEFINE="$t" ;; esac ], [ TARGET_SYSTEM_ROOT= TARGET_SYSTEM_ROOT_DEFINE= CROSS_SYSTEM_HEADER_DIR='$(gcc_tooldir)/sys-include' ]) AC_SUBST(TARGET_SYSTEM_ROOT) AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE) AC_SUBST(CROSS_SYSTEM_HEADER_DIR) # Don't set gcc_gxx_include_dir to gxx_include_dir since that's only # passed in by the toplevel make and thus we'd get different behavior # depending on where we built the sources. gcc_gxx_include_dir= # Specify the g++ header file directory AC_ARG_WITH(gxx-include-dir, [AS_HELP_STRING([--with-gxx-include-dir=DIR], [specifies directory to put g++ header files])], [case "${withval}" in yes) AC_MSG_ERROR(bad value ${withval} given for g++ include directory) ;; no) ;; *) gcc_gxx_include_dir=$with_gxx_include_dir ;; esac]) # This logic must match libstdc++-v3/acinclude.m4:GLIBCXX_EXPORT_INSTALL_INFO. if test x${gcc_gxx_include_dir} = x; then if test x${enable_version_specific_runtime_libs} = xyes; then gcc_gxx_include_dir='${libsubdir}/include/c++' else libstdcxx_incdir='include/c++/$(version)' if test x$host != x$target; then libstdcxx_incdir="$target_alias/$libstdcxx_incdir" fi gcc_gxx_include_dir="\$(libsubdir)/\$(libsubdir_to_prefix)$libstdcxx_incdir" fi fi gcc_gxx_include_dir_add_sysroot=0 if test "${with_sysroot+set}" = set; then gcc_gxx_without_sysroot=`expr "${gcc_gxx_include_dir}" : "${with_sysroot}"'\(.*\)'` if test "${gcc_gxx_without_sysroot}"; then if test x${with_sysroot} != x/; then gcc_gxx_include_dir="${gcc_gxx_without_sysroot}" fi gcc_gxx_include_dir_add_sysroot=1 fi fi AC_ARG_WITH(cpp_install_dir, [AC_HELP_STRING([--with-cpp-install-dir=DIR], [install the user visible C preprocessor in DIR (relative to PREFIX) as well as PREFIX/bin])], [if test x$withval = xyes; then AC_MSG_ERROR([option --with-cpp-install-dir requires an argument]) elif test x$withval != xno; then cpp_install_dir=$withval fi]) # We would like to our source tree to be readonly. However when releases or # pre-releases are generated, the flex/bison generated files as well as the # various formats of manuals need to be included along with the rest of the # sources. Therefore we have --enable-generated-files-in-srcdir to do # just that. AC_MSG_CHECKING([whether to place generated files in the source directory]) dnl generated-files-in-srcdir is disabled by default AC_ARG_ENABLE(generated-files-in-srcdir, [AS_HELP_STRING([--enable-generated-files-in-srcdir], [put copies of generated files in source dir intended for creating source tarballs for users without texinfo bison or flex])], generated_files_in_srcdir=$enableval, generated_files_in_srcdir=no) AC_MSG_RESULT($generated_files_in_srcdir) if test "$generated_files_in_srcdir" = "yes"; then GENINSRC='' else GENINSRC='#' fi AC_SUBST(GENINSRC) # ------------------- # Find default linker # ------------------- # With GNU ld AC_ARG_WITH(gnu-ld, [AS_HELP_STRING([--with-gnu-ld], [arrange to work with GNU ld])], gnu_ld_flag="$with_gnu_ld", gnu_ld_flag=no) # With pre-defined ld AC_ARG_WITH(ld, [AS_HELP_STRING([--with-ld], [arrange to use the specified ld (full pathname)])], DEFAULT_LINKER="$with_ld") if test x"${DEFAULT_LINKER+set}" = x"set"; then if test ! -x "$DEFAULT_LINKER"; then AC_MSG_ERROR([cannot execute: $DEFAULT_LINKER: check --with-ld or env. var. DEFAULT_LINKER]) elif $DEFAULT_LINKER -v < /dev/null 2>&1 | grep GNU > /dev/null; then gnu_ld_flag=yes fi AC_DEFINE_UNQUOTED(DEFAULT_LINKER,"$DEFAULT_LINKER", [Define to enable the use of a default linker.]) fi AC_MSG_CHECKING([whether a default linker was specified]) if test x"${DEFAULT_LINKER+set}" = x"set"; then if test x"$gnu_ld_flag" = x"no"; then AC_MSG_RESULT([yes ($DEFAULT_LINKER)]) else AC_MSG_RESULT([yes ($DEFAULT_LINKER - GNU ld)]) fi else AC_MSG_RESULT(no) fi # With demangler in GNU ld AC_ARG_WITH(demangler-in-ld, [AS_HELP_STRING([--with-demangler-in-ld], [try to use demangler in GNU ld])], demangler_in_ld="$with_demangler_in_ld", demangler_in_ld=yes) # ---------------------- # Find default assembler # ---------------------- # With GNU as AC_ARG_WITH(gnu-as, [AS_HELP_STRING([--with-gnu-as], [arrange to work with GNU as])], gas_flag="$with_gnu_as", gas_flag=no) AC_ARG_WITH(as, [AS_HELP_STRING([--with-as], [arrange to use the specified as (full pathname)])], DEFAULT_ASSEMBLER="$with_as") if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then if test ! -x "$DEFAULT_ASSEMBLER"; then AC_MSG_ERROR([cannot execute: $DEFAULT_ASSEMBLER: check --with-as or env. var. DEFAULT_ASSEMBLER]) elif $DEFAULT_ASSEMBLER -v < /dev/null 2>&1 | grep GNU > /dev/null; then gas_flag=yes fi AC_DEFINE_UNQUOTED(DEFAULT_ASSEMBLER,"$DEFAULT_ASSEMBLER", [Define to enable the use of a default assembler.]) fi AC_MSG_CHECKING([whether a default assembler was specified]) if test x"${DEFAULT_ASSEMBLER+set}" = x"set"; then if test x"$gas_flag" = x"no"; then AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER)]) else AC_MSG_RESULT([yes ($DEFAULT_ASSEMBLER - GNU as)]) fi else AC_MSG_RESULT(no) fi # --------------- # Find C compiler # --------------- # If a non-executable a.out is present (e.g. created by GNU as above even if # invoked with -v only), the IRIX 6 native ld just overwrites the existing # file, even when creating an executable, so an execution test fails. # Remove possible default executable files to avoid this. # # FIXME: This really belongs into AC_PROG_CC and can be removed once # Autoconf includes it. rm -f a.out a.exe b.out # Find the native compiler AC_PROG_CC AC_PROG_CXX ACX_PROG_GNAT([-I"$srcdir"/ada]) # Do configure tests with the C++ compiler, since that's what we build with. AC_LANG(C++) # Remove the -O2: for historical reasons, unless bootstrapping we prefer # optimizations to be activated explicitly by the toplevel. case "$CC" in */prev-gcc/xgcc*) ;; *) CFLAGS=`echo "$CFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` CXXFLAGS=`echo "$CXXFLAGS " | sed -e "s/-Ofast[[ ]]//" -e "s/-O[[gs]][[ ]]//" -e "s/-O[[0-9]]*[[ ]]//" ` ;; esac AC_SUBST(CFLAGS) AC_SUBST(CXXFLAGS) # Determine PICFLAG for target gnatlib. GCC_PICFLAG_FOR_TARGET AC_SUBST(PICFLAG_FOR_TARGET) # ------------------------- # Check C compiler features # ------------------------- AC_USE_SYSTEM_EXTENSIONS AC_PROG_CPP AC_C_INLINE AC_SYS_LARGEFILE # sizeof(char) is 1 by definition. AC_CHECK_SIZEOF(void *) AC_CHECK_SIZEOF(short) AC_CHECK_SIZEOF(int) AC_CHECK_SIZEOF(long) AC_CHECK_TYPES([long long], [AC_CHECK_SIZEOF(long long)]) GCC_STDINT_TYPES if test x"$ac_cv_c_uint64_t" = x"no" -o x"$ac_cv_c_int64_t" = x"no"; then AC_MSG_ERROR([uint64_t or int64_t not found]) fi # check what underlying integer type int64_t uses AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #ifdef HAVE_STDINT_H #include #endif template struct X { }; template <> struct X { typedef long t; }; ]], [[X::t x;]])],[ac_cv_int64_t_type=long],[ac_cv_int64_t_type="long long"])]) if test "$ac_cv_int64_t_type" = "long"; then AC_DEFINE(INT64_T_IS_LONG, 1, [Define if int64_t uses long as underlying type.]) else AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #ifdef HAVE_STDINT_H #include #endif template struct X { }; template <> struct X { typedef long long t; }; ]], [[X::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])]) fi AC_CACHE_CHECK(for std::swap in , ac_cv_std_swap_in_utility, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[int a, b; std::swap(a,b);]])],[ac_cv_std_swap_in_utility=yes],[ac_cv_std_swap_in_utility=no])]) if test $ac_cv_std_swap_in_utility = yes; then AC_DEFINE(HAVE_SWAP_IN_UTILITY, 1, [Define if defines std::swap.]) fi # Check whether compiler is affected by placement new aliasing bug (PR 29286). # If the host compiler is affected by the bug, and we build with optimization # enabled (which happens e.g. when cross-compiling), the pool allocator may # get miscompiled. Use -fno-strict-aliasing to work around this problem. # Since there is no reliable feature check for the presence of this bug, # we simply use a GCC version number check. (This should never trigger for # stages 2 or 3 of a native bootstrap.) aliasing_flags= if test "$GCC" = yes; then saved_CXXFLAGS="$CXXFLAGS" # The following test compilation will succeed if and only if $CXX accepts # -fno-strict-aliasing *and* is older than GCC 4.3. CXXFLAGS="$CXXFLAGS -fno-strict-aliasing" AC_MSG_CHECKING([whether $CXX is affected by placement new aliasing bug]) AC_COMPILE_IFELSE([ #if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) #error compiler not affected by placement new aliasing bug #endif ], [AC_MSG_RESULT([yes]); aliasing_flags='-fno-strict-aliasing'], [AC_MSG_RESULT([no])]) CXXFLAGS="$saved_CXXFLAGS" fi AC_SUBST(aliasing_flags) # --------------------- # Warnings and checking # --------------------- # Check $CC warning features (if it's GCC). # We want to use -pedantic, but we don't want warnings about # * 'long long' # * variadic macros # * overlong strings # * C++11 narrowing conversions in { } # So, we only use -pedantic if we can disable those warnings. # In stage 1, disable -Wformat warnings from old GCCs about new % codes AC_ARG_ENABLE(build-format-warnings, AS_HELP_STRING([--disable-build-format-warnings],[don't use -Wformat while building GCC]), [],[enable_build_format_warnings=yes]) AS_IF([test $enable_build_format_warnings = no], [wf_opt=-Wno-format],[wf_opt=]) ACX_PROG_CXX_WARNING_OPTS( m4_quote(m4_do([-W -Wall -Wno-narrowing -Wwrite-strings ], [-Wcast-qual $wf_opt])), [loose_warn]) ACX_PROG_CC_WARNING_OPTS( m4_quote(m4_do([-Wstrict-prototypes -Wmissing-prototypes])), [c_loose_warn]) ACX_PROG_CXX_WARNING_OPTS( m4_quote(m4_do([-Wmissing-format-attribute ], [-Woverloaded-virtual])), [strict_warn]) ACX_PROG_CC_WARNING_OPTS( m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn]) ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC( m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ], [-Wno-overlength-strings])), [strict_warn]) ACX_PROG_CXX_WARNINGS_ARE_ERRORS([manual], [strict_warn]) # The above macros do nothing if the compiler is not GCC. However, the # Makefile has more goo to add other flags, so these variables are used # to enable warnings only for GCC. warn_cflags= warn_cxxflags= if test "x$GCC" = "xyes"; then warn_cflags='$(GCC_WARN_CFLAGS)' warn_cxxflags='$(GCC_WARN_CXXFLAGS)' fi AC_SUBST(warn_cflags) AC_SUBST(warn_cxxflags) # Disable exceptions and RTTI if building with g++ ACX_PROG_CC_WARNING_OPTS( m4_quote(m4_do([-fno-exceptions -fno-rtti -fasynchronous-unwind-tables])), [noexception_flags]) # Enable expensive internal checks is_release= if test x"`cat $srcdir/DEV-PHASE`" != xexperimental; then is_release=yes fi AC_ARG_ENABLE(checking, [AS_HELP_STRING([[--enable-checking[=LIST]]], [enable expensive run-time checks. With LIST, enable only specific categories of checks. Categories are: yes,no,all,none,release. Flags are: assert,df,extra,fold,gc,gcac,gimple,misc, rtlflag,rtl,runtime,tree,valgrind,types])], [ac_checking_flags="${enableval}"],[ # Determine the default checks. if test x$is_release = x ; then ac_checking_flags=yes,extra else ac_checking_flags=release fi]) IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS," for check in release $ac_checking_flags do case $check in # these set all the flags to specific states yes) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking= ; ac_fold_checking= ; ac_gc_checking=1 ; ac_extra_checking= ; ac_gc_always_collect= ; ac_gimple_checking=1 ; ac_rtl_checking= ; ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; ac_tree_checking=1 ; ac_valgrind_checking= ; ac_types_checking=1 ;; no|none) ac_assert_checking= ; ac_checking= ; ac_df_checking= ; ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ; ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; ac_rtlflag_checking= ; ac_runtime_checking= ; ac_tree_checking= ; ac_valgrind_checking= ; ac_types_checking= ;; all) ac_assert_checking=1 ; ac_checking=1 ; ac_df_checking=1 ; ac_fold_checking=1 ; ac_gc_checking=1 ; ac_extra_checking=1 ; ac_gc_always_collect=1 ; ac_gimple_checking=1 ; ac_rtl_checking=1 ; ac_rtlflag_checking=1 ; ac_runtime_checking=1 ; ac_tree_checking=1 ; ac_valgrind_checking= ; ac_types_checking=1 ;; release) ac_assert_checking=1 ; ac_checking= ; ac_df_checking= ; ac_fold_checking= ; ac_gc_checking= ; ac_extra_checking= ; ac_gc_always_collect= ; ac_gimple_checking= ; ac_rtl_checking= ; ac_rtlflag_checking= ; ac_runtime_checking=1 ; ac_tree_checking= ; ac_valgrind_checking= ; ac_types_checking= ;; # these enable particular checks assert) ac_assert_checking=1 ;; df) ac_df_checking=1 ;; extra) ac_extra_checking=1 ;; fold) ac_fold_checking=1 ;; gc) ac_gc_checking=1 ;; gcac) ac_gc_always_collect=1 ;; gimple) ac_gimple_checking=1 ;; misc) ac_checking=1 ;; rtl) ac_rtl_checking=1 ;; rtlflag) ac_rtlflag_checking=1 ;; runtime) ac_runtime_checking=1 ;; tree) ac_tree_checking=1 ;; types) ac_types_checking=1 ;; valgrind) ac_valgrind_checking=1 ;; *) AC_MSG_ERROR(unknown check category $check) ;; esac done IFS="$ac_save_IFS" nocommon_flag="" if test x$ac_checking != x ; then AC_DEFINE(CHECKING_P, 1, [Define to 0/1 if you want more run-time sanity checks. This one gets a grab bag of miscellaneous but relatively cheap checks.]) nocommon_flag=-fno-common else AC_DEFINE(CHECKING_P, 0) fi AC_SUBST(nocommon_flag) if test x$ac_extra_checking != x ; then AC_DEFINE(ENABLE_EXTRA_CHECKING, 1, [Define to 0/1 if you want extra run-time checking that might affect code generation.]) else AC_DEFINE(ENABLE_EXTRA_CHECKING, 0) fi if test x$ac_df_checking != x ; then AC_DEFINE(ENABLE_DF_CHECKING, 1, [Define if you want more run-time sanity checks for dataflow.]) fi if test x$ac_assert_checking != x ; then AC_DEFINE(ENABLE_ASSERT_CHECKING, 1, [Define if you want assertions enabled. This is a cheap check.]) fi if test x$ac_gimple_checking != x ; then AC_DEFINE(ENABLE_GIMPLE_CHECKING, 1, [Define if you want operations on GIMPLE (the basic data structure of the high-level optimizers) to be checked for dynamic type safety at runtime. This is moderately expensive.]) fi GCC_TARGET_TEMPLATE(ENABLE_RUNTIME_CHECKING) if test x$ac_runtime_checking != x ; then AC_DEFINE(ENABLE_RUNTIME_CHECKING, 1, [Define if you want runtime assertions enabled. This is a cheap check.]) fi if test x$ac_tree_checking != x ; then AC_DEFINE(ENABLE_TREE_CHECKING, 1, [Define if you want all operations on trees (the basic data structure of the front ends) to be checked for dynamic type safety at runtime. This is moderately expensive. ]) TREECHECKING=yes fi if test x$ac_types_checking != x ; then AC_DEFINE(ENABLE_TYPES_CHECKING, 1, [Define if you want all gimple types to be verified after gimplifiation. This is cheap. ]) fi AC_SUBST(TREECHECKING) if test x$ac_rtl_checking != x ; then AC_DEFINE(ENABLE_RTL_CHECKING, 1, [Define if you want all operations on RTL (the basic data structure of the optimizer and back end) to be checked for dynamic type safety at runtime. This is quite expensive.]) fi if test x$ac_rtlflag_checking != x ; then AC_DEFINE(ENABLE_RTL_FLAG_CHECKING, 1, [Define if you want RTL flag accesses to be checked against the RTL codes that are supported for each access macro. This is relatively cheap.]) fi if test x$ac_gc_checking != x ; then AC_DEFINE(ENABLE_GC_CHECKING, 1, [Define if you want the garbage collector to do object poisoning and other memory allocation checks. This is quite expensive.]) fi if test x$ac_gc_always_collect != x ; then AC_DEFINE(ENABLE_GC_ALWAYS_COLLECT, 1, [Define if you want the garbage collector to operate in maximally paranoid mode, validating the entire heap and collecting garbage at every opportunity. This is extremely expensive.]) fi if test x$ac_fold_checking != x ; then AC_DEFINE(ENABLE_FOLD_CHECKING, 1, [Define if you want fold checked that it never destructs its argument. This is quite expensive.]) fi valgrind_path_defines= valgrind_command= dnl # This check AC_REQUIREs various stuff, so it *must not* be inside dnl # an if statement. This was the source of very frustrating bugs dnl # in converting to autoconf 2.5x! AC_CHECK_HEADER(valgrind.h, have_valgrind_h=yes, have_valgrind_h=no) # It is certainly possible that there's valgrind but no valgrind.h. # GCC relies on making annotations so we must have both. AC_MSG_CHECKING(for VALGRIND_DISCARD in ) AC_PREPROC_IFELSE([AC_LANG_SOURCE( [[#include #ifndef VALGRIND_DISCARD #error VALGRIND_DISCARD not defined #endif]])], [gcc_cv_header_valgrind_memcheck_h=yes], [gcc_cv_header_valgrind_memcheck_h=no]) AC_MSG_RESULT($gcc_cv_header_valgrind_memcheck_h) AC_MSG_CHECKING(for VALGRIND_DISCARD in ) AC_PREPROC_IFELSE([AC_LANG_SOURCE( [[#include #ifndef VALGRIND_DISCARD #error VALGRIND_DISCARD not defined #endif]])], [gcc_cv_header_memcheck_h=yes], [gcc_cv_header_memcheck_h=no]) AC_MSG_RESULT($gcc_cv_header_memcheck_h) if test $gcc_cv_header_valgrind_memcheck_h = yes; then AC_DEFINE(HAVE_VALGRIND_MEMCHECK_H, 1, [Define if valgrind's valgrind/memcheck.h header is installed.]) fi if test $gcc_cv_header_memcheck_h = yes; then AC_DEFINE(HAVE_MEMCHECK_H, 1, [Define if valgrind's memcheck.h header is installed.]) fi if test x$ac_valgrind_checking != x ; then AM_PATH_PROG_WITH_TEST(valgrind_path, valgrind, [$ac_dir/$ac_word --version | grep valgrind- >/dev/null 2>&1]) if test "x$valgrind_path" = "x" \ || (test $have_valgrind_h = no \ && test $gcc_cv_header_memcheck_h = no \ && test $gcc_cv_header_valgrind_memcheck_h = no); then AC_MSG_ERROR([*** Can't find both valgrind and valgrind/memcheck.h, memcheck.h or valgrind.h]) fi valgrind_path_defines=-DVALGRIND_PATH='\"'$valgrind_path'\"' valgrind_command="$valgrind_path -q" AC_DEFINE(ENABLE_VALGRIND_CHECKING, 1, [Define if you want to run subprograms and generated programs through valgrind (a memory checker). This is extremely expensive.]) fi AC_SUBST(valgrind_path_defines) AC_SUBST(valgrind_command) # Enable code coverage collection AC_ARG_ENABLE(coverage, [AS_HELP_STRING([[--enable-coverage[=LEVEL]]], [enable compiler's code coverage collection. Use to measure compiler performance and locate unused parts of the compiler. With LEVEL, specify optimization. Values are opt, noopt, default is noopt])], [case "${enableval}" in yes|noopt) coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O0" ;; opt) coverage_flags="-fprofile-arcs -ftest-coverage -frandom-seed=\$@ -O2" ;; no) # a.k.a. --disable-coverage coverage_flags="" ;; *) AC_MSG_ERROR(unknown coverage setting $enableval) ;; esac], [coverage_flags=""]) AC_SUBST(coverage_flags) AC_ARG_ENABLE(gather-detailed-mem-stats, [AS_HELP_STRING([--enable-gather-detailed-mem-stats], [enable detailed memory allocation stats gathering])], [], [enable_gather_detailed_mem_stats=no]) gather_stats=`if test $enable_gather_detailed_mem_stats != no; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(GATHER_STATISTICS, $gather_stats, [Define to enable detailed memory allocation stats gathering.]) AC_ARG_ENABLE(valgrind-annotations, [AS_HELP_STRING([--enable-valgrind-annotations], [enable valgrind runtime interaction])], [], [enable_valgrind_annotations=no]) if test x$enable_valgrind_annotations != xno \ || test x$ac_valgrind_checking != x; then if (test $have_valgrind_h = no \ && test $gcc_cv_header_memcheck_h = no \ && test $gcc_cv_header_valgrind_memcheck_h = no); then AC_MSG_ERROR([*** Can't find valgrind/memcheck.h, memcheck.h or valgrind.h]) fi AC_DEFINE(ENABLE_VALGRIND_ANNOTATIONS, 1, [Define to get calls to the valgrind runtime enabled.]) fi # ------------------------------- # Miscenalleous configure options # ------------------------------- # With stabs AC_ARG_WITH(stabs, [AS_HELP_STRING([--with-stabs], [arrange to use stabs instead of host debug format])], stabs="$with_stabs", stabs=no) # Determine whether or not multilibs are enabled. AC_ARG_ENABLE(multilib, [AS_HELP_STRING([--enable-multilib], [enable library support for multiple ABIs])], [], [enable_multilib=yes]) AC_SUBST(enable_multilib) # Determine whether or not multiarch is enabled. AC_ARG_ENABLE(multiarch, [AS_HELP_STRING([--enable-multiarch], [enable support for multiarch paths])], [case "${enableval}" in yes|no|auto) enable_multiarch=$enableval;; *) AC_MSG_ERROR(bad value ${enableval} given for --enable-multiarch option) ;; esac], [enable_multiarch=auto]) if test x${enable_multiarch} = xauto; then if test x${with_native_system_header_dir} != x; then ma_msg_suffix=", disabled auto check (configured with --native-system-header-dir)" enable_multiarch=no fi if test x$host != x$target && test "x$with_sysroot" = x; then ma_msg_suffix=", disabled auto check (cross build configured without --with-sysroot)" enable_multiarch=no fi fi AC_MSG_CHECKING(for multiarch configuration) AC_SUBST(enable_multiarch) AC_MSG_RESULT($enable_multiarch$ma_msg_suffix) # needed for setting the multiarch name for soft-float/hard-float ABIs AC_SUBST(with_cpu) AC_SUBST(with_float) # Enable __cxa_atexit for C++. AC_ARG_ENABLE(__cxa_atexit, [AS_HELP_STRING([--enable-__cxa_atexit], [enable __cxa_atexit for C++])], [], []) # Enable C extension for decimal float if target supports it. GCC_AC_ENABLE_DECIMAL_FLOAT([$target]) dfp=`if test $enable_decimal_float != no; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_FLOAT, $dfp, [Define to 1 to enable decimal float extension to C.]) # Use default_decimal_float for dependency. enable_decimal_float=$default_decimal_float bid=`if test $enable_decimal_float = bid; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(ENABLE_DECIMAL_BID_FORMAT, $bid, [Define to 1 to specify that we are using the BID decimal floating point format instead of DPD]) # Enable C extension for fixed-point arithmetic. AC_ARG_ENABLE(fixed-point, [AS_HELP_STRING([--enable-fixed-point], [enable fixed-point arithmetic extension to C])], [], [ case $target in arm*) enable_fixed_point=yes ;; mips*-*-*) enable_fixed_point=yes ;; *) AC_MSG_WARN([fixed-point is not supported for this target, ignored]) enable_fixed_point=no ;; esac ]) AC_SUBST(enable_fixed_point) fixedpoint=`if test $enable_fixed_point = yes; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(ENABLE_FIXED_POINT, $fixedpoint, [Define to 1 to enable fixed-point arithmetic extension to C.]) # Enable threads # Pass with no value to take the default # Pass with a value to specify a thread package AC_ARG_ENABLE(threads, [AS_HELP_STRING([[--enable-threads[=LIB]]], [enable thread usage for target GCC, using LIB thread package])],, [enable_threads='']) AC_ARG_ENABLE(tls, [AS_HELP_STRING([--enable-tls], [enable or disable generation of tls code overriding the assembler check for tls support])], [ case $enable_tls in yes | no) ;; *) AC_MSG_ERROR(['$enable_tls' is an invalid value for --enable-tls. 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AC_ARG_ENABLE(languages, [AS_HELP_STRING([--enable-languages=LIST], [specify which front-ends to build])], [case ,${enable_languages}, in ,,|,yes,) # go safe -- we cannot be much sure without the toplevel # configure's # analysis of which target libs are present and usable enable_languages=c ;; *,all,*) AC_MSG_ERROR([only the toplevel supports --enable-languages=all]) ;; *,c,*) ;; *) enable_languages=c,${enable_languages} ;; esac], [enable_languages=c]) if test x"$enable_as_accelerator_for" != x; then AC_DEFINE(ACCEL_COMPILER, 1, [Define if this compiler should be built as the offload target compiler.]) enable_as_accelerator=yes case "${target}" in *-intelmicemul-*) # In this case we expect offload compiler to be built as native, so we # need to rename the driver to avoid clashes with host's drivers. program_transform_name="s&^&${target}-&" ;; esac sedscript="s#${target_noncanonical}#${enable_as_accelerator_for}-accel-${target_noncanonical}#" program_transform_name=`echo $program_transform_name | sed $sedscript` accel_dir_suffix=/accel/${target_noncanonical} real_target_noncanonical=${enable_as_accelerator_for} fi AC_SUBST(enable_as_accelerator) AC_SUBST(real_target_noncanonical) AC_SUBST(accel_dir_suffix) for tgt in `echo $enable_offload_targets | sed 's/,/ /g'`; do tgt=`echo $tgt | sed 's/=.*//'` if echo "$tgt" | grep "^hsa" > /dev/null ; then enable_hsa=1 else enable_offloading=1 fi if test x"$offload_targets" = x; then offload_targets=$tgt else offload_targets="$offload_targets,$tgt" fi done AC_DEFINE_UNQUOTED(OFFLOAD_TARGETS, "$offload_targets", [Define to offload targets, separated by commas.]) if test x"$enable_offloading" != x; then AC_DEFINE(ENABLE_OFFLOADING, 1, [Define this to enable support for offloading.]) else AC_DEFINE(ENABLE_OFFLOADING, 0, [Define this to enable support for offloading.]) fi if test x"$enable_hsa" = x1 ; then AC_DEFINE(ENABLE_HSA, 1, [Define this to enable support for generating HSAIL.]) fi AC_ARG_WITH(multilib-list, [AS_HELP_STRING([--with-multilib-list], [select multilibs (AArch64, SH and x86-64 only)])], :, with_multilib_list=default) # ------------------------- # Checks for other programs # ------------------------- AC_PROG_MAKE_SET # Find some useful tools AC_PROG_AWK # We need awk to create options.c and options.h. # Bail out if it's missing. case ${AWK} in "") AC_MSG_ERROR([can't build without awk, bailing out]) ;; esac gcc_AC_PROG_LN_S ACX_PROG_LN($LN_S) AC_PROG_RANLIB ranlib_flags="" AC_SUBST(ranlib_flags) gcc_AC_PROG_INSTALL # See if cmp has --ignore-initial. gcc_AC_PROG_CMP_IGNORE_INITIAL # See if we have the mktemp command. AC_CHECK_PROG(have_mktemp_command, mktemp, yes, no) # See if makeinfo has been installed and is modern enough # that we can use it. ACX_CHECK_PROG_VER(MAKEINFO, makeinfo, --version, [GNU texinfo.* \([0-9][0-9.]*\)], [4.[7-9]*|4.[1-9][0-9]*|[5-9]*|[1-9][0-9]*]) if test $gcc_cv_prog_makeinfo_modern = no; then AC_MSG_WARN([ *** Makeinfo is missing or too old. *** Info documentation will not be built.]) BUILD_INFO= else BUILD_INFO=info fi AC_SUBST(BUILD_INFO) # Is pod2man recent enough to regenerate manpages? AC_MSG_CHECKING([for recent Pod::Man]) if (perl -e 'use 1.10 Pod::Man') >/dev/null 2>&1; then AC_MSG_RESULT(yes) GENERATED_MANPAGES=generated-manpages else AC_MSG_RESULT(no) GENERATED_MANPAGES= fi AC_SUBST(GENERATED_MANPAGES) MISSING="${CONFIG_SHELL-/bin/sh} $ac_aux_dir/missing" # How about lex? dnl Don't use AC_PROG_LEX; we insist on flex. dnl LEXLIB is not useful in gcc. AC_CHECK_PROGS([FLEX], flex, [$MISSING flex]) # Bison? AC_CHECK_PROGS([BISON], bison, [$MISSING bison]) # Binutils are not build modules, unlike bison/flex/makeinfo. So we # check for build == host before using them. # NM if test x${build} = x${host} && test -f $srcdir/../binutils/nm.c \ && test -d ../binutils ; then NM='${objdir}/../binutils/nm-new' else AC_CHECK_PROG(NM, nm, nm, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing nm) fi # AR if test x${build} = x${host} && test -f $srcdir/../binutils/ar.c \ && test -d ../binutils ; then AR='${objdir}/../binutils/ar' else AC_CHECK_PROG(AR, ar, ar, ${CONFIG_SHELL-/bin/sh} ${srcdir}/../missing ar) fi # The jit documentation looks better if built with sphinx, but can be # built with texinfo if sphinx is not available. # Set "doc_build_sys" to "sphinx" or "texinfo" accordingly. AC_CHECK_PROG(doc_build_sys, sphinx-build, sphinx, texinfo) # -------------------- # Checks for C headers # -------------------- # Need to reject headers which give warnings, so that the -Werror bootstrap # works later. *sigh* This needs to come before all header checks. AC_PROG_CPP_WERROR AC_HEADER_STDC AC_HEADER_TIME ACX_HEADER_STRING AC_HEADER_SYS_WAIT AC_HEADER_TIOCGWINSZ AC_CHECK_HEADERS(limits.h stddef.h string.h strings.h stdlib.h time.h iconv.h \ fcntl.h ftw.h unistd.h sys/file.h sys/time.h sys/mman.h \ sys/resource.h sys/param.h sys/times.h sys/stat.h \ direct.h malloc.h langinfo.h ldfcn.h locale.h wchar.h) # Check for thread headers. AC_CHECK_HEADER(thread.h, [have_thread_h=yes], [have_thread_h=]) AC_CHECK_HEADER(pthread.h, [have_pthread_h=yes], [have_pthread_h=]) # These tests can't be done till we know if we have limits.h. gcc_AC_C_CHAR_BIT AC_C_BIGENDIAN # ---------------------- # Checks for C++ headers # ---------------------- dnl Autoconf will give an error in the configure script if there is no dnl C++ preprocessor. Hack to prevent that. m4_pushdef([AC_MSG_ERROR], m4_defn([AC_MSG_WARN]))[]dnl AC_PROG_CXXCPP m4_popdef([AC_MSG_ERROR])[]dnl AC_CHECK_HEADERS(unordered_map) AC_CHECK_HEADERS(tr1/unordered_map) AC_CHECK_HEADERS(ext/hash_map) # -------- # Dependency checking. # -------- ZW_CREATE_DEPDIR AC_CONFIG_COMMANDS([gccdepdir],[ ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR for lang in $subdirs c-family common do ${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs $lang/$DEPDIR done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR]) ZW_PROG_COMPILER_DEPENDENCIES([CXX]) # -------- # UNSORTED # -------- # These libraries may be used by collect2. # We may need a special search path to get them linked. AC_CACHE_CHECK(for collect2 libraries, gcc_cv_collect2_libs, [save_LIBS="$LIBS" for libs in '' -lld -lmld \ '-L/usr/lib/cmplrs/cc2.11 -lmld' \ '-L/usr/lib/cmplrs/cc3.11 -lmld' do LIBS="$libs" AC_TRY_LINK_FUNC(ldopen, [gcc_cv_collect2_libs="$libs"; break]) done LIBS="$save_LIBS" test -z "$gcc_cv_collect2_libs" && gcc_cv_collect2_libs='none required']) case $gcc_cv_collect2_libs in "none required") ;; *) COLLECT2_LIBS=$gcc_cv_collect2_libs ;; esac AC_SUBST(COLLECT2_LIBS) # When building Ada code on Alpha, we need exc_resume which is usually in # -lexc. So test for it. save_LIBS="$LIBS" LIBS= AC_SEARCH_LIBS(exc_resume, exc) GNAT_LIBEXC="$LIBS" LIBS="$save_LIBS" AC_SUBST(GNAT_LIBEXC) # To support -mcpu=native on Solaris/SPARC, we need libkstat. save_LIBS="$LIBS" LIBS= AC_SEARCH_LIBS(kstat_open, kstat) EXTRA_GCC_LIBS="$LIBS" LIBS="$save_LIBS" AC_SUBST(EXTRA_GCC_LIBS) # Some systems put ldexp and frexp in libm instead of libc; assume # they're both in the same place. jcf-dump needs them. save_LIBS="$LIBS" LIBS= AC_SEARCH_LIBS(ldexp, m) LDEXP_LIB="$LIBS" LIBS="$save_LIBS" AC_SUBST(LDEXP_LIB) # Use only if it exists, # doesn't clash with , declares intmax_t and defines # PRId64 AC_MSG_CHECKING(for inttypes.h) AC_CACHE_VAL(gcc_cv_header_inttypes_h, [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( [[#define __STDC_FORMAT_MACROS #include #include ]], [[intmax_t i = -1; #ifndef PRId64 choke me #endif]])], [gcc_cv_header_inttypes_h=yes], [gcc_cv_header_inttypes_h=no])]) AC_MSG_RESULT($gcc_cv_header_inttypes_h) if test $gcc_cv_header_inttypes_h = yes; then AC_DEFINE(HAVE_INTTYPES_H, 1, [Define if you have a working header file.]) fi dnl Disabled until we have a complete test for buggy enum bitfields. dnl gcc_AC_C_ENUM_BF_UNSIGNED define(gcc_UNLOCKED_FUNCS, clearerr_unlocked feof_unlocked dnl ferror_unlocked fflush_unlocked fgetc_unlocked fgets_unlocked dnl fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl putchar_unlocked putc_unlocked) AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \ popen sysconf strsignal getrusage nl_langinfo \ gettimeofday mbstowcs wcswidth mmap setlocale \ gcc_UNLOCKED_FUNCS madvise) if test x$ac_cv_func_mbstowcs = xyes; then AC_CACHE_CHECK(whether mbstowcs works, gcc_cv_func_mbstowcs_works, [ AC_RUN_IFELSE([AC_LANG_SOURCE([[#include int main() { mbstowcs(0, "", 0); return 0; }]])], [gcc_cv_func_mbstowcs_works=yes], [gcc_cv_func_mbstowcs_works=no], [gcc_cv_func_mbstowcs_works=yes])]) if test x$gcc_cv_func_mbstowcs_works = xyes; then AC_DEFINE(HAVE_WORKING_MBSTOWCS, 1, [Define this macro if mbstowcs does not crash when its first argument is NULL.]) fi fi AC_CHECK_TYPE(ssize_t, int) AC_CHECK_TYPE(caddr_t, char *) GCC_AC_FUNC_MMAP_BLACKLIST case "${host}" in *-*-*vms*) # Under VMS, vfork works very differently than on Unix. The standard test # won't work, and it isn't easily adaptable. It makes more sense to # just force it. ac_cv_func_vfork_works=yes ;; esac AC_FUNC_FORK AM_ICONV # Until we have in-tree GNU iconv: LIBICONV_DEP= if test -f "$LTLIBICONV"; then LIBICONV_DEP=$LTLIBICONV fi AC_SUBST(LIBICONV_DEP) AM_LC_MESSAGES AM_LANGINFO_CODESET # We will need to find libiberty.h and ansidecl.h saved_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC" saved_CXXFLAGS="$CXXFLAGS" CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC" # gcc_AC_CHECK_DECLS doesn't support overloaded functions, so use the # normal autoconf function for these. But force definition of # HAVE_DECL_BASENAME like gcc_AC_CHECK_DECLS does, to suppress the bizarre # basename handling in libiberty.h. AC_CHECK_DECLS([basename(const char*), strstr(const char*,const char*)], , ,[ #undef HAVE_DECL_BASENAME #define HAVE_DECL_BASENAME 1 #include "ansidecl.h" #include "system.h"]) gcc_AC_CHECK_DECLS(getenv atol atoll asprintf sbrk abort atof getcwd getwd \ madvise stpcpy strnlen strsignal strverscmp \ strtol strtoul strtoll strtoull setenv unsetenv \ errno snprintf vsnprintf vasprintf malloc realloc calloc \ free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[ #include "ansidecl.h" #include "system.h"]) gcc_AC_CHECK_DECLS(getrlimit setrlimit getrusage, , ,[ #include "ansidecl.h" #include "system.h" #ifdef HAVE_SYS_RESOURCE_H #include #endif ]) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include "ansidecl.h" #include "system.h" #ifdef HAVE_SYS_RESOURCE_H #include #endif ]], [[rlim_t l = 0;]])],[],[AC_DEFINE([rlim_t],[long], [Define to `long' if doesn't define.])]) # On AIX 5.2, conflicts with , as both define incompatible # FREAD and FWRITE macros. 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AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include "ansidecl.h" #include "system.h" #ifdef HAVE_SYS_TIMES_H #include #endif ]], [[struct tms tms;]])],[ac_cv_struct_tms=yes],[ac_cv_struct_tms=no])]) if test $ac_cv_struct_tms = yes; then AC_DEFINE(HAVE_STRUCT_TMS, 1, [Define if defines struct tms.]) fi # use gcc_cv_* here because this doesn't match the behavior of AC_CHECK_TYPE. # revisit after autoconf 2.50. AC_CACHE_CHECK(for clock_t, gcc_cv_type_clock_t, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include "ansidecl.h" #include "system.h" ]], [[clock_t x;]])],[gcc_cv_type_clock_t=yes],[gcc_cv_type_clock_t=no])]) if test $gcc_cv_type_clock_t = yes; then AC_DEFINE(HAVE_CLOCK_T, 1, [Define if defines clock_t.]) fi # Check if F_SETLKW is supported by fcntl. AC_CACHE_CHECK(for F_SETLKW, ac_cv_f_setlkw, [ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include ]], [[ struct flock fl; fl.l_whence = 0; fl.l_start = 0; fl.l_len = 0; fl.l_pid = 0; return fcntl (1, F_SETLKW, &fl);]])], [ac_cv_f_setlkw=yes],[ac_cv_f_setlkw=no])]) if test $ac_cv_f_setlkw = yes; then AC_DEFINE(HOST_HAS_F_SETLKW, 1, [Define if F_SETLKW supported by fcntl.]) fi # Restore CFLAGS, CXXFLAGS from before the gcc_AC_NEED_DECLARATIONS tests. CFLAGS="$saved_CFLAGS" CXXFLAGS="$saved_CXXFLAGS" # mkdir takes a single argument on some systems. gcc_AC_FUNC_MKDIR_TAKES_ONE_ARG # File extensions manext='.1' objext='.o' AC_SUBST(manext) AC_SUBST(objext) # With Setjmp/Longjmp based exception handling. AC_ARG_ENABLE(sjlj-exceptions, [AS_HELP_STRING([--enable-sjlj-exceptions], [arrange to use setjmp/longjmp exception handling])], [case $target in *-*-hpux10*) if test $enableval != yes; then AC_MSG_WARN([dwarf2 exceptions not supported, sjlj exceptions forced]) enableval=yes fi ;; esac force_sjlj_exceptions=yes], [case $target in *-*-hpux10*) force_sjlj_exceptions=yes enableval=yes ;; lm32*-*-*) force_sjlj_exceptions=yes enableval=yes ;; *) force_sjlj_exceptions=no ;; esac]) if test $force_sjlj_exceptions = yes; then sjlj=`if test $enableval = yes; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(CONFIG_SJLJ_EXCEPTIONS, $sjlj, [Define 0/1 to force the choice for exception handling model.]) fi # -------------------------------------------------------- # Build, host, and target specific configuration fragments # -------------------------------------------------------- # Collect build-machine-specific information. . ${srcdir}/config.build # Collect host-machine-specific information. . ${srcdir}/config.host target_gtfiles= # Collect target-machine-specific information. . ${srcdir}/config.gcc extra_objs="${host_extra_objs} ${extra_objs}" extra_gcc_objs="${host_extra_gcc_objs} ${extra_gcc_objs}" # Default the target-machine variables that were not explicitly set. if test x"$tm_file" = x then tm_file=$cpu_type/$cpu_type.h; fi if test x"$extra_headers" = x then extra_headers=; fi if test x$md_file = x then md_file=$cpu_type/$cpu_type.md; fi if test x$out_file = x then out_file=$cpu_type/$cpu_type.c; fi if test x"$tmake_file" = x then tmake_file=$cpu_type/t-$cpu_type fi # Support --enable-initfini-array. if test x$enable_initfini_array != xno; then tm_file="${tm_file} initfini-array.h" fi if test x"$dwarf2" = xyes then tm_file="$tm_file tm-dwarf2.h" fi # Say what files are being used for the output code and MD file. echo "Using \`$srcdir/config/$out_file' for machine-specific logic." echo "Using \`$srcdir/config/$md_file' as machine description file." # If any of the xm_file variables contain nonexistent files, warn # about them and drop them. bx= for x in $build_xm_file; do if test -f $srcdir/config/$x then bx="$bx $x" else AC_MSG_WARN($srcdir/config/$x does not exist.) fi done build_xm_file="$bx" hx= for x in $host_xm_file; do if test -f $srcdir/config/$x then hx="$hx $x" else AC_MSG_WARN($srcdir/config/$x does not exist.) fi done host_xm_file="$hx" tx= for x in $xm_file; do if test -f $srcdir/config/$x then tx="$tx $x" else AC_MSG_WARN($srcdir/config/$x does not exist.) fi done xm_file="$tx" count=a for f in $tm_file; do count=${count}x done if test $count = ax; then echo "Using \`$srcdir/config/$tm_file' as target machine macro file." else echo "Using the following target machine macro files:" for f in $tm_file; do echo " $srcdir/config/$f" done fi if test x$use_long_long_for_widest_fast_int = xyes; then AC_DEFINE(USE_LONG_LONG_FOR_WIDEST_FAST_INT, 1, [Define to 1 if the 'long long' type is wider than 'long' but still efficiently supported by the host hardware.]) fi gnu_ld_bool=`if test x"$gnu_ld" = x"yes"; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(HAVE_GNU_LD, $gnu_ld_bool, [Define to 1 if using GNU ld.]) gnu_as_bool=`if test x"$gas" = x"yes"; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(HAVE_GNU_AS, $gnu_as_bool, [Define to 1 if using GNU as.]) count=a for f in $host_xm_file; do count=${count}x done if test $count = a; then : elif test $count = ax; then echo "Using \`$srcdir/config/$host_xm_file' as host machine macro file." else echo "Using the following host machine macro files:" for f in $host_xm_file; do echo " $srcdir/config/$f" done fi echo "Using ${out_host_hook_obj} for host machine hooks." if test "$host_xm_file" != "$build_xm_file"; then count=a for f in $build_xm_file; do count=${count}x done if test $count = a; then : elif test $count = ax; then echo "Using \`$srcdir/config/$build_xm_file' as build machine macro file." else echo "Using the following build machine macro files:" for f in $build_xm_file; do echo " $srcdir/config/$f" done fi fi if test -n "$configured_native_system_header_dir"; then native_system_header_dir=$configured_native_system_header_dir fi NATIVE_SYSTEM_HEADER_DIR="$native_system_header_dir" AC_SUBST(NATIVE_SYSTEM_HEADER_DIR) case ${host} in powerpc*-*-darwin*) AC_CACHE_CHECK([whether mcontext_t fields have underscores], gcc_cv_mcontext_underscores, AC_COMPILE_IFELSE([ #include #include #include int main() { mcontext_t m; if (m->ss.srr0) return 0; return 0; } ], gcc_cv_mcontext_underscores=no, gcc_cv_mcontext_underscores=yes)) if test $gcc_cv_mcontext_underscores = yes; then AC_DEFINE(HAS_MCONTEXT_T_UNDERSCORES,,dnl [mcontext_t fields start with __]) fi ;; esac # --------- # Threading # --------- # Check if a valid thread package case ${enable_threads} in "" | no) # No threads target_thread_file='single' ;; yes) # default target_thread_file='single' ;; aix | dce | lynx | mipssde | posix | rtems | \ single | tpf | vxworks | win32) target_thread_file=${enable_threads} ;; *) echo "${enable_threads} is an unknown thread package" 1>&2 exit 1 ;; esac if test x${thread_file} = x; then # No thread file set by target-specific clauses in config.gcc, # so use file chosen by default logic above thread_file=${target_thread_file} fi # -------- # UNSORTED # -------- use_cxa_atexit=no if test x$enable___cxa_atexit = xyes || \ test x$enable___cxa_atexit = x -a x$default_use_cxa_atexit = xyes; then if test x$host = x$target; then case $host in # mingw32 doesn't have __cxa_atexit but uses atexit registration # keyed to flag_use_cxa_atexit *-*-mingw32*) use_cxa_atexit=yes ;; powerpc-ibm-aix*) use_cxa_atexit=yes ;; *) AC_CHECK_FUNC(__cxa_atexit,[use_cxa_atexit=yes], [echo "__cxa_atexit can't be enabled on this target"]) ;; esac else # We can't check for __cxa_atexit when building a cross, so assume # it is available use_cxa_atexit=yes fi if test x$use_cxa_atexit = xyes; then AC_DEFINE(DEFAULT_USE_CXA_ATEXIT, 2, [Define if you want to use __cxa_atexit, rather than atexit, to register C++ destructors for local statics and global objects. This is essential for fully standards-compliant handling of destructors, but requires __cxa_atexit in libc.]) fi fi # Look for a file containing extra machine modes. if test -n "$extra_modes" && test -f $srcdir/config/$extra_modes; then extra_modes_file='$(srcdir)'/config/${extra_modes} AC_SUBST(extra_modes_file) AC_DEFINE_UNQUOTED(EXTRA_MODES_FILE, "config/$extra_modes", [Define to the name of a file containing a list of extra machine modes for this architecture.]) fi # Convert extra_options into a form suitable for Makefile use. extra_opt_files= all_opt_files= for f in $extra_options; do extra_opt_files="$extra_opt_files \$(srcdir)/config/$f" all_opt_files="$all_opt_files $srcdir/config/$f" done AC_SUBST(extra_opt_files) # auto-host.h is the file containing items generated by autoconf and is # the first file included by config.h. # If host=build, it is correct to have bconfig include auto-host.h # as well. If host!=build, we are in error and need to do more # work to find out the build config parameters. if test x$host = x$build then build_auto=auto-host.h else # We create a subdir, then run autoconf in the subdir. # To prevent recursion we set host and build for the new # invocation of configure to the build for this invocation # of configure. tempdir=build.$$ rm -rf $tempdir mkdir $tempdir cd $tempdir case ${srcdir} in /* | [A-Za-z]:[\\/]* ) realsrcdir=${srcdir};; *) realsrcdir=../${srcdir};; esac # Clearing GMPINC is necessary to prevent host headers being # used by the build compiler. Defining GENERATOR_FILE stops # system.h from including gmp.h. CC="${CC_FOR_BUILD}" CFLAGS="${CFLAGS_FOR_BUILD}" \ CXX="${CXX_FOR_BUILD}" CXXFLAGS="${CXXFLAGS_FOR_BUILD}" \ LD="${LD_FOR_BUILD}" LDFLAGS="${LDFLAGS_FOR_BUILD}" \ GMPINC="" CPPFLAGS="${CPPFLAGS} -DGENERATOR_FILE" \ ${realsrcdir}/configure \ --enable-languages=${enable_languages-all} \ --target=$target_alias --host=$build_alias --build=$build_alias # We just finished tests for the build machine, so rename # the file auto-build.h in the gcc directory. mv auto-host.h ../auto-build.h cd .. rm -rf $tempdir build_auto=auto-build.h fi AC_SUBST(build_subdir) tm_file="${tm_file} defaults.h" tm_p_file="${tm_p_file} tm-preds.h" host_xm_file="auto-host.h ansidecl.h ${host_xm_file}" build_xm_file="${build_auto} ansidecl.h ${build_xm_file}" # We don't want ansidecl.h in target files, write code there in ISO/GNU C. # put this back in temporarily. xm_file="auto-host.h ansidecl.h ${xm_file}" # -------- # UNSORTED # -------- changequote(,)dnl # Compile in configure arguments. if test -f configargs.h ; then # Being re-configured. gcc_config_arguments=`grep configuration_arguments configargs.h | sed -e 's/.*"\([^"]*\)".*/\1/'` gcc_config_arguments="$gcc_config_arguments : (reconfigured) $TOPLEVEL_CONFIGURE_ARGUMENTS" else gcc_config_arguments="$TOPLEVEL_CONFIGURE_ARGUMENTS" fi # Double all backslashes and backslash all quotes to turn # gcc_config_arguments into a C string. sed -e 's/\\/\\\\/g; s/"/\\"/g' <conftest.out $gcc_config_arguments EOF gcc_config_arguments_str=`cat conftest.out` rm -f conftest.out cat > configargs.h < plugin-version.h <target assembler and hope that it will have the same features # as the host->target assembler we'll be using. gcc_cv_gas_major_version= gcc_cv_gas_minor_version= gcc_cv_as_gas_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gas m4_pattern_allow([AS_FOR_TARGET])dnl AS_VAR_SET_IF(gcc_cv_as,, [ if test -x "$DEFAULT_ASSEMBLER"; then gcc_cv_as="$DEFAULT_ASSEMBLER" elif test -f $gcc_cv_as_gas_srcdir/configure.ac \ && test -f ../gas/Makefile \ && test x$build = x$host; then gcc_cv_as=../gas/as-new$build_exeext elif test -x as$build_exeext; then # Build using assembler in the current directory. gcc_cv_as=./as$build_exeext elif ( set dummy $AS_FOR_TARGET; test -x $[2] ); then gcc_cv_as="$AS_FOR_TARGET" else AC_PATH_PROG(gcc_cv_as, $AS_FOR_TARGET) fi]) ORIGINAL_AS_FOR_TARGET=$gcc_cv_as AC_SUBST(ORIGINAL_AS_FOR_TARGET) case "$ORIGINAL_AS_FOR_TARGET" in ./as | ./as$build_exeext) ;; *) AC_CONFIG_FILES(as:exec-tool.in, [chmod +x as]) ;; esac AC_MSG_CHECKING(what assembler to use) if test "$gcc_cv_as" = ../gas/as-new$build_exeext; then # Single tree build which includes gas. We want to prefer it # over whatever linker top-level may have detected, since # we'll use what we're building after installation anyway. AC_MSG_RESULT(newly built gas) in_tree_gas=yes _gcc_COMPUTE_GAS_VERSION in_tree_gas_is_elf=no if grep 'obj_format = elf' ../gas/Makefile > /dev/null \ || (grep 'obj_format = multi' ../gas/Makefile \ && grep 'extra_objects =.* obj-elf' ../gas/Makefile) > /dev/null then in_tree_gas_is_elf=yes fi else AC_MSG_RESULT($gcc_cv_as) in_tree_gas=no fi default_ld= AC_ARG_ENABLE(ld, [[ --enable-ld[=ARG] build ld [ARG={default,yes,no}]]], [case "${enableval}" in no) default_ld=ld.gold ;; esac]) install_gold_as_default=no AC_ARG_ENABLE(gold, [[ --enable-gold[=ARG] build gold [ARG={default,yes,no}]]], [case "${enableval}" in default) install_gold_as_default=yes ;; yes) if test x${default_ld} != x; then install_gold_as_default=yes fi ;; no) ;; *) AC_MSG_ERROR([invalid --enable-gold argument]) ;; esac]) # Identify the linker which will work hand-in-glove with the newly # built GCC, so that we can examine its features. This is the linker # which will be driven by the driver program. # # If build != host, and we aren't building gas in-tree, we identify a # build->target linker and hope that it will have the same features # as the host->target linker we'll be using. gcc_cv_gld_major_version= gcc_cv_gld_minor_version= gcc_cv_ld_gld_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/ld gcc_cv_ld_gold_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/gold gcc_cv_ld_bfd_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/bfd AS_VAR_SET_IF(gcc_cv_ld,, [ if test -x "$DEFAULT_LINKER"; then gcc_cv_ld="$DEFAULT_LINKER" elif test $install_gold_as_default = yes \ && test -f $gcc_cv_ld_gold_srcdir/configure.ac \ && test -f ../gold/Makefile \ && test x$build = x$host; then gcc_cv_ld=../gold/ld-new$build_exeext elif test -f $gcc_cv_ld_gld_srcdir/configure.ac \ && test -f ../ld/Makefile \ && test x$build = x$host; then gcc_cv_ld=../ld/ld-new$build_exeext elif test -x collect-ld$build_exeext; then # Build using linker in the current directory. gcc_cv_ld=./collect-ld$build_exeext elif ( set dummy $LD_FOR_TARGET; test -x $[2] ); then gcc_cv_ld="$LD_FOR_TARGET" else AC_PATH_PROG(gcc_cv_ld, $LD_FOR_TARGET) fi]) ORIGINAL_PLUGIN_LD_FOR_TARGET=$gcc_cv_ld PLUGIN_LD_SUFFIX=`basename $gcc_cv_ld | sed -e "s,$target_alias-,,"` # if the PLUGIN_LD is set ld-new, just have it as ld # as that is the installed named. if test x$PLUGIN_LD_SUFFIX = xld-new \ || test x$PLUGIN_LD_SUFFIX = xcollect-ld ; then PLUGIN_LD_SUFFIX=ld fi AC_ARG_WITH(plugin-ld, [AS_HELP_STRING([[--with-plugin-ld=[ARG]]], [specify the plugin linker])], [if test x"$withval" != x; then ORIGINAL_PLUGIN_LD_FOR_TARGET="$withval" PLUGIN_LD_SUFFIX="$withval" fi]) AC_SUBST(ORIGINAL_PLUGIN_LD_FOR_TARGET) AC_DEFINE_UNQUOTED(PLUGIN_LD_SUFFIX, "$PLUGIN_LD_SUFFIX", [Specify plugin linker]) # Check to see if we are using gold instead of ld AC_MSG_CHECKING(whether we are using gold) ld_is_gold=no if test x$gcc_cv_ld != x; then if $gcc_cv_ld --version 2>/dev/null | sed 1q \ | grep "GNU gold" > /dev/null; then ld_is_gold=yes fi fi AC_MSG_RESULT($ld_is_gold) AC_MSG_CHECKING(gold linker with split stack support as non default) # Check to see if default ld is not gold, but gold is # available and has support for split stack. If gcc was configured # with gold then no checking is done. # if test x$ld_is_gold = xno && which ${gcc_cv_ld}.gold >/dev/null 2>&1; then # For platforms other than powerpc64*, enable as appropriate. gold_non_default=no ld_gold=`which ${gcc_cv_ld}.gold` # Make sure this gold has minimal split stack support if $ld_gold --help 2>/dev/null | grep split-stack-adjust-size >/dev/null 2>&1; then ld_vers=`$ld_gold --version | sed 1q` gold_vers=`echo $ld_vers | sed -n \ -e 's,^[[^)]]*[[ ]]\([[0-9]][[0-9]]*\.[[0-9]][[0-9]]*[[^)]]*\)) .*$,\1,p'` case $target in # check that the gold version contains the complete split stack support # on powerpc64 big and little endian powerpc64*-*-*) case "$gold_vers" in 2.25.[[1-9]]*|2.2[[6-9]][[.0-9]]*|2.[[3-9]][[.0-9]]*|[[3-9]].[[.0-9]]*) gold_non_default=yes ;; *) gold_non_default=no ;; esac ;; esac fi if test $gold_non_default = yes; then AC_DEFINE(HAVE_GOLD_NON_DEFAULT_SPLIT_STACK, 1, [Define if the gold linker supports split stack and is available as a non-default]) fi fi AC_MSG_RESULT($gold_non_default) ORIGINAL_LD_FOR_TARGET=$gcc_cv_ld AC_SUBST(ORIGINAL_LD_FOR_TARGET) case "$ORIGINAL_LD_FOR_TARGET" in ./collect-ld | ./collect-ld$build_exeext) ;; *) AC_CONFIG_FILES(collect-ld:exec-tool.in, [chmod +x collect-ld]) ;; esac AC_MSG_CHECKING(what linker to use) if test "$gcc_cv_ld" = ../ld/ld-new$build_exeext \ || test "$gcc_cv_ld" = ../gold/ld-new$build_exeext; then # Single tree build which includes ld. We want to prefer it # over whatever linker top-level may have detected, since # we'll use what we're building after installation anyway. AC_MSG_RESULT(newly built ld) in_tree_ld=yes in_tree_ld_is_elf=no if (grep 'EMUL = .*elf' ../ld/Makefile \ || grep 'EMUL = .*linux' ../ld/Makefile \ || grep 'EMUL = .*lynx' ../ld/Makefile) > /dev/null; then in_tree_ld_is_elf=yes elif test "$ld_is_gold" = yes; then in_tree_ld_is_elf=yes fi for f in $gcc_cv_ld_bfd_srcdir/configure $gcc_cv_ld_gld_srcdir/configure $gcc_cv_ld_gld_srcdir/configure.ac $gcc_cv_ld_gld_srcdir/Makefile.in do changequote(,)dnl gcc_cv_gld_version=`sed -n -e 's/^[ ]*VERSION=[^0-9A-Za-z_]*\([0-9]*\.[0-9]*.*\)/VERSION=\1/p' < $f` if test x$gcc_cv_gld_version != x; then break fi done case $gcc_cv_gld_version in VERSION=[0-9]*) ;; changequote([,])dnl *) AC_MSG_ERROR([[cannot find version of in-tree linker]]) ;; changequote(,)dnl esac gcc_cv_gld_major_version=`expr "$gcc_cv_gld_version" : "VERSION=\([0-9]*\)"` gcc_cv_gld_minor_version=`expr "$gcc_cv_gld_version" : "VERSION=[0-9]*\.\([0-9]*\)"` changequote([,])dnl ORIGINAL_LD_BFD_FOR_TARGET=../ld/ld-new$build_exeext ORIGINAL_LD_GOLD_FOR_TARGET=../gold/ld-new$build_exeext else AC_MSG_RESULT($gcc_cv_ld) in_tree_ld=no gcc_cvs_ld_program=`dirname $gcc_cv_ld`/`basename $gcc_cv_ld $host_exeext` ORIGINAL_LD_BFD_FOR_TARGET=${gcc_cvs_ld_program}.bfd$host_exeext ORIGINAL_LD_GOLD_FOR_TARGET=${gcc_cvs_ld_program}.gold$host_exeext fi AC_SUBST(ORIGINAL_LD_BFD_FOR_TARGET) AC_SUBST(ORIGINAL_LD_GOLD_FOR_TARGET) # Figure out what nm we will be using. gcc_cv_binutils_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/binutils AS_VAR_SET_IF(gcc_cv_nm,, [ if test -f $gcc_cv_binutils_srcdir/configure.ac \ && test -f ../binutils/Makefile \ && test x$build = x$host; then gcc_cv_nm=../binutils/nm-new$build_exeext elif test -x nm$build_exeext; then gcc_cv_nm=./nm$build_exeext elif ( set dummy $NM_FOR_TARGET; test -x $[2] ); then gcc_cv_nm="$NM_FOR_TARGET" else AC_PATH_PROG(gcc_cv_nm, $NM_FOR_TARGET) fi]) AC_MSG_CHECKING(what nm to use) if test "$gcc_cv_nm" = ../binutils/nm-new$build_exeext; then # Single tree build which includes binutils. AC_MSG_RESULT(newly built nm) in_tree_nm=yes else AC_MSG_RESULT($gcc_cv_nm) in_tree_nm=no fi ORIGINAL_NM_FOR_TARGET=$gcc_cv_nm AC_SUBST(ORIGINAL_NM_FOR_TARGET) case "$ORIGINAL_NM_FOR_TARGET" in ./nm | ./nm$build_exeext) ;; *) AC_CONFIG_FILES(nm:exec-tool.in, [chmod +x nm]) ;; esac # Figure out what objdump we will be using. AS_VAR_SET_IF(gcc_cv_objdump,, [ if test -f $gcc_cv_binutils_srcdir/configure.ac \ && test -f ../binutils/Makefile \ && test x$build = x$host; then # Single tree build which includes binutils. gcc_cv_objdump=../binutils/objdump$build_exeext elif test -x objdump$build_exeext; then gcc_cv_objdump=./objdump$build_exeext elif ( set dummy $OBJDUMP_FOR_TARGET; test -x $[2] ); then gcc_cv_objdump="$OBJDUMP_FOR_TARGET" else AC_PATH_PROG(gcc_cv_objdump, $OBJDUMP_FOR_TARGET) fi]) AC_MSG_CHECKING(what objdump to use) if test "$gcc_cv_objdump" = ../binutils/objdump$build_exeext; then # Single tree build which includes binutils. AC_MSG_RESULT(newly built objdump) elif test x$gcc_cv_objdump = x; then AC_MSG_RESULT(not found) else AC_MSG_RESULT($gcc_cv_objdump) fi # Figure out what readelf we will be using. AS_VAR_SET_IF(gcc_cv_readelf,, [ if test -f $gcc_cv_binutils_srcdir/configure.ac \ && test -f ../binutils/Makefile \ && test x$build = x$host; then # Single tree build which includes binutils. gcc_cv_readelf=../binutils/readelf$build_exeext elif test -x readelf$build_exeext; then gcc_cv_readelf=./readelf$build_exeext elif ( set dummy $READELF_FOR_TARGET; test -x $[2] ); then gcc_cv_readelf="$READELF_FOR_TARGET" else AC_PATH_PROG(gcc_cv_readelf, $READELF_FOR_TARGET) fi]) AC_MSG_CHECKING(what readelf to use) if test "$gcc_cv_readelf" = ../binutils/readelf$build_exeext; then # Single tree build which includes binutils. AC_MSG_RESULT(newly built readelf) elif test x$gcc_cv_readelf = x; then AC_MSG_RESULT(not found) else AC_MSG_RESULT($gcc_cv_readelf) fi # Figure out what assembler alignment features are present. gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align, [2,6,0],, [.balign 4 .p2align 2],, [AC_DEFINE(HAVE_GAS_BALIGN_AND_P2ALIGN, 1, [Define if your assembler supports .balign and .p2align.])]) gcc_GAS_CHECK_FEATURE([.p2align with maximum skip], gcc_cv_as_max_skip_p2align, [2,8,0],, [.p2align 4,,7],, [AC_DEFINE(HAVE_GAS_MAX_SKIP_P2ALIGN, 1, [Define if your assembler supports specifying the maximum number of bytes to skip when using the GAS .p2align command.])]) gcc_GAS_CHECK_FEATURE([.literal16], gcc_cv_as_literal16, [2,8,0],, [.literal16],, [AC_DEFINE(HAVE_GAS_LITERAL16, 1, [Define if your assembler supports .literal16.])]) gcc_GAS_CHECK_FEATURE([working .subsection -1], gcc_cv_as_subsection_m1, [elf,2,9,0],, [conftest_label1: .word 0 .subsection -1 conftest_label2: .word 0 .previous], [if test x$gcc_cv_nm != x; then $gcc_cv_nm conftest.o | grep conftest_label1 > conftest.nm1 $gcc_cv_nm conftest.o | grep conftest_label2 | sed -e 's/label2/label1/' > conftest.nm2 if cmp conftest.nm1 conftest.nm2 > /dev/null 2>&1 then : else gcc_cv_as_subsection_m1=yes fi rm -f conftest.nm1 conftest.nm2 fi], [AC_DEFINE(HAVE_GAS_SUBSECTION_ORDERING, 1, [Define if your assembler supports .subsection and .subsection -1 starts emitting at the beginning of your section.])]) gcc_GAS_CHECK_FEATURE([.weak], gcc_cv_as_weak, [2,2,0],, [ .weak foobar],, [AC_DEFINE(HAVE_GAS_WEAK, 1, [Define if your assembler supports .weak.])]) gcc_GAS_CHECK_FEATURE([.weakref], gcc_cv_as_weakref, [2,17,0],, [ .weakref foobar, barfnot],, [AC_DEFINE(HAVE_GAS_WEAKREF, 1, [Define if your assembler supports .weakref.])]) gcc_GAS_CHECK_FEATURE([.nsubspa comdat], gcc_cv_as_nsubspa_comdat, [2,15,91],, [ .SPACE $TEXT$ .NSUBSPA $CODE$,COMDAT],, [AC_DEFINE(HAVE_GAS_NSUBSPA_COMDAT, 1, [Define if your assembler supports .nsubspa comdat option.])]) # .hidden needs to be supported in both the assembler and the linker, # because GNU LD versions before 2.12.1 have buggy support for STV_HIDDEN. # This is irritatingly difficult to feature test for; we have to check the # date string after the version number. If we've got an in-tree # ld, we don't know its patchlevel version, so we set the baseline at 2.13 # to be safe. # The gcc_GAS_CHECK_FEATURE call just sets a cache variable. gcc_GAS_CHECK_FEATURE([.hidden], gcc_cv_as_hidden, [elf,2,13,0],, [ .hidden foobar foobar:]) case "${target}" in *-*-darwin*) # Darwin as has some visibility support, though with a different syntax. gcc_cv_as_hidden=yes ;; esac # gnu_indirect_function type is an extension proposed at # http://groups.google/com/group/generic-abi/files. It allows dynamic runtime # selection of function implementation AC_ARG_ENABLE(gnu-indirect-function, [AS_HELP_STRING([--enable-gnu-indirect-function], [enable the use of the @gnu_indirect_function to glibc systems])], [case $enable_gnu_indirect_function in yes | no) ;; *) AC_MSG_ERROR(['$enable_gnu_indirect_function' is an invalid value for --enable-gnu-indirect-function. Valid choices are 'yes' and 'no'.]) ;; esac], [enable_gnu_indirect_function="$default_gnu_indirect_function"]) gif=`if test x$enable_gnu_indirect_function = xyes; then echo 1; else echo 0; fi` AC_DEFINE_UNQUOTED(HAVE_GNU_INDIRECT_FUNCTION, $gif, [Define if your system supports gnu indirect functions.]) changequote(,)dnl if test $in_tree_ld != yes ; then ld_ver=`$gcc_cv_ld --version 2>/dev/null | sed 1q` if echo "$ld_ver" | grep GNU > /dev/null; then if test x"$ld_is_gold" = xyes; then # GNU gold --version looks like this: # # GNU gold (GNU Binutils 2.21.51.20110225) 1.11 # # We extract the binutils version which is more familiar and specific # than the gold version. ld_vers=`echo $ld_ver | sed -n \ -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'` else # GNU ld --version looks like this: # # GNU ld (GNU Binutils) 2.21.51.20110225 ld_vers=`echo $ld_ver | sed -n \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` fi ld_date=`echo $ld_ver | sed -n 's,^.*\([2-9][0-9][0-9][0-9]\)[-]*\([01][0-9]\)[-]*\([0-3][0-9]\).*$,\1\2\3,p'` ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` ld_vers_patch=`expr "$ld_vers" : '[0-9]*\.[0-9]*\.\([0-9]*\)'` else case "${target}" in *-*-solaris2*) # See acinclude.m4 (gcc_SUN_LD_VERSION) for the version number # format. # # Don't reuse gcc_gv_sun_ld_vers_* in case a linker other than # /usr/ccs/bin/ld has been configured. ld_ver=`$gcc_cv_ld -V 2>&1` if echo "$ld_ver" | grep 'Solaris Link Editors' > /dev/null; then ld_vers=`echo $ld_ver | sed -n \ -e 's,^.*: 5\.[0-9][0-9]*-\([0-9]\.[0-9][0-9]*\).*$,\1,p'` ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` fi ;; esac fi fi changequote([,])dnl AC_CACHE_CHECK(linker for .hidden support, gcc_cv_ld_hidden, [[if test $in_tree_ld = yes ; then gcc_cv_ld_hidden=no if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 13 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_hidden=yes fi else gcc_cv_ld_hidden=yes if test x"$ld_is_gold" = xyes; then : elif echo "$ld_ver" | grep GNU > /dev/null; then case "${target}" in mmix-knuth-mmixware) # The linker emits by default mmo, not ELF, so "no" is appropriate. gcc_cv_ld_hidden=no ;; esac if test 0"$ld_date" -lt 20020404; then if test -n "$ld_date"; then # If there was date string, but was earlier than 2002-04-04, fail gcc_cv_ld_hidden=no elif test -z "$ld_vers"; then # If there was no date string nor ld version number, something is wrong gcc_cv_ld_hidden=no else test -z "$ld_vers_patch" && ld_vers_patch=0 if test "$ld_vers_major" -lt 2; then gcc_cv_ld_hidden=no elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 12; then gcc_cv_ld_hidden="no" elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 12 -a "$ld_vers_patch" -eq 0; then gcc_cv_ld_hidden=no fi fi fi else case "${target}" in *-*-darwin*) # Darwin ld has some visibility support. gcc_cv_ld_hidden=yes ;; hppa64*-*-hpux* | ia64*-*-hpux*) gcc_cv_ld_hidden=yes ;; *-*-solaris2.1[0-9]*) # Support for .hidden in Sun ld appeared in Solaris 9 FCS, but # .symbolic was only added in Solaris 9 12/02. gcc_cv_ld_hidden=yes ;; *) gcc_cv_ld_hidden=no ;; esac fi fi]]) libgcc_visibility=no AC_SUBST(libgcc_visibility) GCC_TARGET_TEMPLATE([HAVE_GAS_HIDDEN]) if test $gcc_cv_as_hidden = yes && test $gcc_cv_ld_hidden = yes; then libgcc_visibility=yes AC_DEFINE(HAVE_GAS_HIDDEN, 1, [Define if your assembler and linker support .hidden.]) fi AC_MSG_CHECKING(linker read-only and read-write section mixing) gcc_cv_ld_ro_rw_mix=unknown if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_ro_rw_mix=read-write fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then echo '.section myfoosect, "a"' > conftest1.s echo '.section myfoosect, "aw"' > conftest2.s echo '.byte 1' >> conftest2.s echo '.section myfoosect, "a"' > conftest3.s echo '.byte 0' >> conftest3.s if $gcc_cv_as -o conftest1.o conftest1.s > /dev/null 2>&1 \ && $gcc_cv_as -o conftest2.o conftest2.s > /dev/null 2>&1 \ && $gcc_cv_as -o conftest3.o conftest3.s > /dev/null 2>&1 \ && $gcc_cv_ld -shared -o conftest1.so conftest1.o \ conftest2.o conftest3.o > /dev/null 2>&1; then gcc_cv_ld_ro_rw_mix=`$gcc_cv_objdump -h conftest1.so \ | sed -e '/myfoosect/!d' -e N` if echo "$gcc_cv_ld_ro_rw_mix" | grep CONTENTS > /dev/null; then if echo "$gcc_cv_ld_ro_rw_mix" | grep READONLY > /dev/null; then gcc_cv_ld_ro_rw_mix=read-only else gcc_cv_ld_ro_rw_mix=read-write fi fi fi changequote(,)dnl rm -f conftest.* conftest[123].* changequote([,])dnl fi if test x$gcc_cv_ld_ro_rw_mix = xread-write; then AC_DEFINE(HAVE_LD_RO_RW_SECTION_MIXING, 1, [Define if your linker links a mix of read-only and read-write sections into a read-write section.]) fi AC_MSG_RESULT($gcc_cv_ld_ro_rw_mix) gcc_AC_INITFINI_ARRAY # Check if we have .[us]leb128, and support symbol arithmetic with it. gcc_GAS_CHECK_FEATURE([.sleb128 and .uleb128], gcc_cv_as_leb128, [elf,2,11,0],, [ .data .uleb128 L2 - L1 L1: .uleb128 1280 .sleb128 -1010 L2:], [[# GAS versions before 2.11 do not support uleb128, # despite appearing to. # ??? There exists an elf-specific test that will crash # the assembler. Perhaps it's better to figure out whether # arbitrary sections are supported and try the test. as_ver=`$gcc_cv_as --version 2>/dev/null | sed 1q` if echo "$as_ver" | grep GNU > /dev/null; then as_vers=`echo $as_ver | sed -n \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` as_major=`expr "$as_vers" : '\([0-9]*\)'` as_minor=`expr "$as_vers" : '[0-9]*\.\([0-9]*\)'` if test $as_major -eq 2 && test $as_minor -lt 11 then : else gcc_cv_as_leb128=yes fi fi]], [AC_DEFINE(HAVE_AS_LEB128, 1, [Define if your assembler supports .sleb128 and .uleb128.])]) # Check if we have assembler support for unwind directives. gcc_GAS_CHECK_FEATURE([cfi directives], gcc_cv_as_cfi_directive, ,, [ .text .cfi_startproc .cfi_offset 0, 0 .cfi_same_value 1 .cfi_def_cfa 1, 2 .cfi_escape 1, 2, 3, 4, 5 .cfi_endproc], [case "$target" in *-*-solaris*) # If the linker used on Solaris (like Sun ld) isn't capable of merging # read-only and read-write sections, we need to make sure that the # assembler used emits read-write .eh_frame sections. if test "x$gcc_cv_ld_ro_rw_mix" != xread-write; then if test "x$gcc_cv_objdump" != x; then if $gcc_cv_objdump -h conftest.o 2>/dev/null | \ sed -e /.eh_frame/!d -e N | grep READONLY > /dev/null; then gcc_cv_as_cfi_directive=no else case "$target" in i?86-*-solaris2.1[[0-9]]* | x86_64-*-solaris2.1[[0-9]]*) # On Solaris/x86, make sure that GCC and assembler agree on using # read-only .eh_frame sections for 64-bit. if test x$gas = xyes; then as_ix86_64_opt="--64" else as_ix86_64_opt="-xarch=amd64" fi if $gcc_cv_as $as_ix86_64_opt -o conftest.o conftest.s > /dev/null 2>&1 && \ $gcc_cv_objdump -h conftest.o 2>/dev/null | \ sed -e /.eh_frame/!d -e N | \ grep READONLY > /dev/null; then gcc_cv_as_cfi_directive=yes else gcc_cv_as_cfi_directive=no fi ;; *) gcc_cv_as_cfi_directive=yes ;; esac fi else # no objdump, err on the side of caution gcc_cv_as_cfi_directive=no fi else gcc_cv_as_cfi_directive=yes fi ;; *-*-*) gcc_cv_as_cfi_directive=yes ;; esac]) if test $gcc_cv_as_cfi_directive = yes && test x$gcc_cv_objdump != x; then gcc_GAS_CHECK_FEATURE([working cfi advance], gcc_cv_as_cfi_advance_working, ,, [ .text .cfi_startproc .cfi_adjust_cfa_offset 64 .skip 75040, 0 .cfi_adjust_cfa_offset 128 .cfi_endproc], [[ if $gcc_cv_objdump -Wf conftest.o 2>/dev/null \ | grep 'DW_CFA_advance_loc[24]:[ ][ ]*75040[ ]' >/dev/null; then gcc_cv_as_cfi_advance_working=yes fi ]]) else # no objdump, err on the side of caution gcc_cv_as_cfi_advance_working=no fi GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_DIRECTIVE) AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_DIRECTIVE, [`if test $gcc_cv_as_cfi_directive = yes \ && test $gcc_cv_as_cfi_advance_working = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports CFI directives.]) GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE) gcc_GAS_CHECK_FEATURE([cfi personality directive], gcc_cv_as_cfi_personality_directive, ,, [ .text .cfi_startproc .cfi_personality 0, symbol .cfi_endproc]) AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_PERSONALITY_DIRECTIVE, [`if test $gcc_cv_as_cfi_personality_directive = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports .cfi_personality.]) gcc_GAS_CHECK_FEATURE([cfi sections directive], gcc_cv_as_cfi_sections_directive, ,, [ .text .cfi_sections .debug_frame, .eh_frame .cfi_startproc .cfi_endproc], [case $target_os in win32 | pe | cygwin* | mingw32*) # Need to check that we generated the correct relocation for the # .debug_frame section. This was fixed for binutils 2.21. gcc_cv_as_cfi_sections_directive=no if test "x$gcc_cv_objdump" != x; then if $gcc_cv_objdump -j .debug_frame -r conftest.o 2>/dev/null | \ grep secrel > /dev/null; then gcc_cv_as_cfi_sections_directive=yes fi fi ;; *) gcc_cv_as_cfi_sections_directive=yes ;; esac]) GCC_TARGET_TEMPLATE(HAVE_GAS_CFI_SECTIONS_DIRECTIVE) AC_DEFINE_UNQUOTED(HAVE_GAS_CFI_SECTIONS_DIRECTIVE, [`if test $gcc_cv_as_cfi_sections_directive = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports .cfi_sections.]) # GAS versions up to and including 2.11.0 may mis-optimize # .eh_frame data. gcc_GAS_CHECK_FEATURE(eh_frame optimization, gcc_cv_as_eh_frame, [elf,2,12,0],, [ .text .LFB1: .4byte 0 .L1: .4byte 0 .LFE1: .section .eh_frame,"aw",@progbits __FRAME_BEGIN__: .4byte .LECIE1-.LSCIE1 .LSCIE1: .4byte 0x0 .byte 0x1 .ascii "z\0" .byte 0x1 .byte 0x78 .byte 0x1a .byte 0x0 .byte 0x4 .4byte 1 .p2align 1 .LECIE1: .LSFDE1: .4byte .LEFDE1-.LASFDE1 .LASFDE1: .4byte .LASFDE1-__FRAME_BEGIN__ .4byte .LFB1 .4byte .LFE1-.LFB1 .byte 0x4 .4byte .LFE1-.LFB1 .byte 0x4 .4byte .L1-.LFB1 .LEFDE1:], [ dnl # For autoconf 2.5x, must protect trailing spaces with @&t@. cat > conftest.lit < conftest.big </dev/null \ | tail -3 > conftest.got \ && { diff -b conftest.lit conftest.got > /dev/null 2>&1 \ || diff -b conftest.big conftest.got > /dev/null 2>&1; } then gcc_cv_as_eh_frame=yes elif AC_TRY_COMMAND($gcc_cv_as -o conftest.o --traditional-format /dev/null); then gcc_cv_as_eh_frame=buggy else # Uh oh, what do we do now? gcc_cv_as_eh_frame=no fi]) if test $gcc_cv_as_eh_frame = buggy; then AC_DEFINE(USE_AS_TRADITIONAL_FORMAT, 1, [Define if your assembler mis-optimizes .eh_frame data.]) fi gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, [elf,2,12,0], [--fatal-warnings], [.section .rodata.str, "aMS", @progbits, 1]) if test $gcc_cv_as_shf_merge = no; then gcc_GAS_CHECK_FEATURE(section merging support, gcc_cv_as_shf_merge, [elf,2,12,0], [--fatal-warnings], [.section .rodata.str, "aMS", %progbits, 1]) fi AC_DEFINE_UNQUOTED(HAVE_GAS_SHF_MERGE, [`if test $gcc_cv_as_shf_merge = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler supports marking sections with SHF_MERGE flag.]) gcc_GAS_CHECK_FEATURE([stabs directive], gcc_cv_as_stabs_directive, ,, [.stabs "gcc2_compiled.",60,0,0,0],, [AC_DEFINE(HAVE_AS_STABS_DIRECTIVE, 1, [Define if your assembler supports .stabs.])]) gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as)], gcc_cv_as_comdat_group, [elf,2,16,0], [--fatal-warnings], [.section .text,"axG",@progbits,.foo,comdat]) if test $gcc_cv_as_comdat_group = yes; then gcc_cv_as_comdat_group_percent=no gcc_cv_as_comdat_group_group=no else gcc_GAS_CHECK_FEATURE([COMDAT group support (GNU as, %type)], gcc_cv_as_comdat_group_percent, [elf,2,16,0], [--fatal-warnings], [.section .text,"axG",%progbits,.foo,comdat]) if test $gcc_cv_as_comdat_group_percent = yes; then gcc_cv_as_comdat_group_group=no else case "${target}" in # Sun as uses a completely different syntax. *-*-solaris2*) case "${target}" in sparc*-*-solaris2*) conftest_s=' .group foo,".text%foo",#comdat .section ".text%foo", #alloc,#execinstr,#progbits .globl foo foo: ' ;; i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*) conftest_s=' .group foo,.text%foo,#comdat .section .text%foo, "ax", @progbits .globl foo foo: ' ;; esac gcc_GAS_CHECK_FEATURE([COMDAT group support (Sun as, .group)], gcc_cv_as_comdat_group_group, ,, [$conftest_s]) ;; esac if test -z "${gcc_cv_as_comdat_group_group+set}"; then gcc_cv_as_comdat_group_group=no fi fi fi if test x"$ld_is_gold" = xyes; then comdat_group=yes elif test $in_tree_ld = yes ; then comdat_group=no if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then comdat_group=yes fi elif echo "$ld_ver" | grep GNU > /dev/null; then comdat_group=yes if test 0"$ld_date" -lt 20050308; then if test -n "$ld_date"; then # If there was date string, but was earlier than 2005-03-08, fail comdat_group=no elif test "$ld_vers_major" -lt 2; then comdat_group=no elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then comdat_group=no fi fi else changequote(,)dnl case "${target}" in *-*-solaris2.1[1-9]*) comdat_group=no # Sun ld has COMDAT group support since Solaris 9, but it doesn't # interoperate with GNU as until Solaris 11 build 130, i.e. ld # version 1.688. # # If using Sun as for COMDAT group as emitted by GCC, one needs at # least ld version 1.2267. if test "$ld_vers_major" -gt 1; then comdat_group=yes elif test "x$gas_flag" = xyes && test "$ld_vers_minor" -ge 1688; then comdat_group=yes elif test "$ld_vers_minor" -ge 2267; then comdat_group=yes fi ;; *) # Assume linkers other than GNU ld don't support COMDAT group. comdat_group=no ;; esac changequote([,])dnl fi # Allow overriding the automatic COMDAT group tests above. AC_ARG_ENABLE(comdat, [AS_HELP_STRING([--enable-comdat], [enable COMDAT group support])], [comdat_group="$enable_comdat"]) if test $comdat_group = no; then gcc_cv_as_comdat_group=no gcc_cv_as_comdat_group_percent=no gcc_cv_as_comdat_group_group=no fi AC_DEFINE_UNQUOTED(HAVE_COMDAT_GROUP, [`if test $gcc_cv_as_comdat_group = yes \ || test $gcc_cv_as_comdat_group_percent = yes \ || test $gcc_cv_as_comdat_group_group = yes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler and linker support COMDAT groups.]) gcc_GAS_CHECK_FEATURE([line table discriminator support], gcc_cv_as_discriminator, [2,19,51],, [ .text .file 1 "conf.c" .loc 1 1 0 discriminator 1],, [AC_DEFINE(HAVE_GAS_DISCRIMINATOR, 1, [Define if your assembler supports the .loc discriminator sub-directive.])]) # Thread-local storage - the check is heavily parameterized. conftest_s= tls_first_major= tls_first_minor= tls_as_opt= case "$target" in changequote(,)dnl alpha*-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text ldq $27,__tls_get_addr($29) !literal!1 lda $16,foo($29) !tlsgd!1 jsr $26,($27),__tls_get_addr !lituse_tlsgd!1 ldq $27,__tls_get_addr($29) !literal!2 lda $16,foo($29) !tlsldm!2 jsr $26,($27),__tls_get_addr !lituse_tlsldm!2 ldq $1,foo($29) !gotdtprel ldah $2,foo($29) !dtprelhi lda $3,foo($2) !dtprello lda $4,foo($29) !dtprel ldq $1,foo($29) !gottprel ldah $2,foo($29) !tprelhi lda $3,foo($2) !tprello lda $4,foo($29) !tprel' tls_first_major=2 tls_first_minor=13 tls_as_opt=--fatal-warnings ;; arc*-*-*) conftest_s=' add_s r0,r0, @foo@tpoff' tls_first_major=2 tls_first_minor=23 ;; cris-*-*|crisv32-*-*) conftest_s=' .section ".tdata","awT",@progbits x: .long 25 .text move.d x:IE,$r10 nop' tls_first_major=2 tls_first_minor=20 tls_as_opt=--fatal-warnings ;; frv*-*-*) conftest_s=' .section ".tdata","awT",@progbits x: .long 25 .text call #gettlsoff(x)' tls_first_major=2 tls_first_minor=14 ;; hppa*-*-linux*) conftest_s=' t1: .reg %r20 t2: .reg %r21 gp: .reg %r19 .section ".tdata","awT",@progbits foo: .long 25 .text .align 4 addil LT%foo-$tls_gdidx$,gp ldo RT%foo-$tls_gdidx$(%r1),%arg0 b __tls_get_addr nop addil LT%foo-$tls_ldidx$,gp b __tls_get_addr ldo RT%foo-$tls_ldidx$(%r1),%arg0 addil LR%foo-$tls_dtpoff$,%ret0 ldo RR%foo-$tls_dtpoff$(%r1),%t1 mfctl %cr27,%t1 addil LT%foo-$tls_ieoff$,gp ldw RT%foo-$tls_ieoff$(%r1),%t2 add %t1,%t2,%t3 mfctl %cr27,%t1 addil LR%foo-$tls_leoff$,%t1 ldo RR%foo-$tls_leoff$(%r1),%t2' tls_first_major=2 tls_first_minor=15 tls_as_opt=--fatal-warnings ;; arm*-*-*) conftest_s=' .section ".tdata","awT",%progbits foo: .long 25 .text .word foo(gottpoff) .word foo(tpoff) .word foo(tlsgd) .word foo(tlsldm) .word foo(tlsldo)' tls_first_major=2 tls_first_minor=17 ;; i[34567]86-*-* | x86_64-*-*) case "$target" in i[34567]86-*-solaris2.* | x86_64-*-solaris2.1[0-9]*) on_solaris=yes ;; *) on_solaris=no ;; esac if test x$on_solaris = xyes && test x$gas_flag = xno; then conftest_s=' .section .tdata,"awt",@progbits' tls_first_major=0 tls_first_minor=0 tls_section_flag=t changequote([,])dnl AC_DEFINE(TLS_SECTION_ASM_FLAG, 't', [Define to the flag used to mark TLS sections if the default (`T') doesn't work.]) changequote(,)dnl else conftest_s=' .section ".tdata","awT",@progbits' tls_first_major=2 tls_first_minor=14 tls_section_flag=T tls_as_opt="--fatal-warnings" fi case "$target" in i[34567]86-*-*) conftest_s="$conftest_s foo: .long 25 .text movl %gs:0, %eax leal foo@tlsgd(,%ebx,1), %eax leal foo@tlsldm(%ebx), %eax leal foo@dtpoff(%eax), %edx movl foo@gottpoff(%ebx), %eax subl foo@gottpoff(%ebx), %eax addl foo@gotntpoff(%ebx), %eax movl foo@indntpoff, %eax movl \$foo@tpoff, %eax subl \$foo@tpoff, %eax leal foo@ntpoff(%ecx), %eax" ;; x86_64-*-*) if test x$on_solaris = xyes; then case $gas_flag in yes) tls_as_opt="$tls_as_opt --64" ;; no) tls_as_opt="$tls_as_opt -xarch=amd64" ;; esac fi conftest_s="$conftest_s foo: .long 25 .text movq %fs:0, %rax leaq foo@tlsgd(%rip), %rdi leaq foo@tlsld(%rip), %rdi leaq foo@dtpoff(%rax), %rdx movq foo@gottpoff(%rip), %rax movq \$foo@tpoff, %rax" ;; esac ;; ia64-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: data8 25 .text addl r16 = @ltoff(@dtpmod(foo#)), gp addl r17 = @ltoff(@dtprel(foo#)), gp addl r18 = @ltoff(@tprel(foo#)), gp addl r19 = @dtprel(foo#), gp adds r21 = @dtprel(foo#), r13 movl r23 = @dtprel(foo#) addl r20 = @tprel(foo#), gp adds r22 = @tprel(foo#), r13 movl r24 = @tprel(foo#)' tls_first_major=2 tls_first_minor=13 tls_as_opt=--fatal-warnings ;; microblaze*-*-*) conftest_s=' .section .tdata,"awT",@progbits x: .word 2 .text addik r5,r20,x@TLSGD addik r5,r20,x@TLSLDM' tls_first_major=2 tls_first_minor=20 tls_as_opt='--fatal-warnings' ;; mips*-*-*) conftest_s=' .section .tdata,"awT",@progbits x: .word 2 .text addiu $4, $28, %tlsgd(x) addiu $4, $28, %tlsldm(x) lui $4, %dtprel_hi(x) addiu $4, $4, %dtprel_lo(x) lw $4, %gottprel(x)($28) lui $4, %tprel_hi(x) addiu $4, $4, %tprel_lo(x)' tls_first_major=2 tls_first_minor=16 tls_as_opt='-32 --fatal-warnings' ;; m68k-*-*) conftest_s=' .section .tdata,"awT",@progbits x: .word 2 .text foo: move.l x@TLSGD(%a5),%a0 move.l x@TLSLDM(%a5),%a0 move.l x@TLSLDO(%a5),%a0 move.l x@TLSIE(%a5),%a0 move.l x@TLSLE(%a5),%a0' tls_first_major=2 tls_first_minor=19 tls_as_opt='--fatal-warnings' ;; nios2-*-*) conftest_s=' .section ".tdata","awT",@progbits' tls_first_major=2 tls_first_minor=23 tls_as_opt="--fatal-warnings" ;; aarch64*-*-*) conftest_s=' .section ".tdata","awT",%progbits foo: .long 25 .text adrp x0, :tlsgd:x add x0, x0, #:tlsgd_lo12:x bl __tls_get_addr nop' tls_first_major=2 tls_first_minor=20 tls_as_opt='--fatal-warnings' ;; powerpc-ibm-aix*) conftest_s=' .extern __get_tpointer .toc LC..1: .tc a[TC],a[TL]@le .csect .text[PR] .tlstest: lwz 9,LC..1(2) bla __get_tpointer lwzx 3,9,3 .globl a .csect a[TL],4 a: .space 4' tls_first_major=0 tls_first_minor=0 ;; powerpc64*-*-*) conftest_s=' .section ".tdata","awT",@progbits .align 3 ld0: .space 8 ld1: .space 8 x1: .space 8 x2: .space 8 x3: .space 8 .text addi 3,2,ld0@got@tlsgd bl .__tls_get_addr nop addi 3,2,ld1@toc bl .__tls_get_addr nop addi 3,2,x1@got@tlsld bl .__tls_get_addr nop addi 9,3,x1@dtprel bl .__tls_get_addr nop addis 9,3,x2@dtprel@ha addi 9,9,x2@dtprel@l bl .__tls_get_addr nop ld 9,x3@got@dtprel(2) add 9,9,3 bl .__tls_get_addr nop' tls_first_major=2 tls_first_minor=14 tls_as_opt="-a64 --fatal-warnings" ;; powerpc*-*-*) conftest_s=' .section ".tdata","awT",@progbits .align 2 ld0: .space 4 ld1: .space 4 x1: .space 4 x2: .space 4 x3: .space 4 .text addi 3,31,ld0@got@tlsgd bl __tls_get_addr addi 3,31,x1@got@tlsld bl __tls_get_addr addi 9,3,x1@dtprel addis 9,3,x2@dtprel@ha addi 9,9,x2@dtprel@l lwz 9,x3@got@tprel(31) add 9,9,x@tls addi 9,2,x1@tprel addis 9,2,x2@tprel@ha addi 9,9,x2@tprel@l' tls_first_major=2 tls_first_minor=14 tls_as_opt="-a32 --fatal-warnings" ;; s390-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text .long foo@TLSGD .long foo@TLSLDM .long foo@DTPOFF .long foo@NTPOFF .long foo@GOTNTPOFF .long foo@INDNTPOFF l %r1,foo@GOTNTPOFF(%r12) l %r1,0(%r1):tls_load:foo bas %r14,0(%r1,%r13):tls_gdcall:foo bas %r14,0(%r1,%r13):tls_ldcall:foo' tls_first_major=2 tls_first_minor=14 tls_as_opt="-m31 --fatal-warnings" ;; s390x-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text .quad foo@TLSGD .quad foo@TLSLDM .quad foo@DTPOFF .quad foo@NTPOFF .quad foo@GOTNTPOFF lg %r1,foo@GOTNTPOFF(%r12) larl %r1,foo@INDNTPOFF brasl %r14,__tls_get_offset@PLT:tls_gdcall:foo brasl %r14,__tls_get_offset@PLT:tls_ldcall:foo' tls_first_major=2 tls_first_minor=14 tls_as_opt="-m64 -Aesame --fatal-warnings" ;; sh-*-* | sh[123456789lbe]*-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text .long foo@TLSGD .long foo@TLSLDM .long foo@DTPOFF .long foo@GOTTPOFF .long foo@TPOFF' tls_first_major=2 tls_first_minor=13 tls_as_opt=--fatal-warnings ;; sparc*-*-*) case "$target" in sparc*-sun-solaris2.*) on_solaris=yes ;; *) on_solaris=no ;; esac if test x$on_solaris = xyes && test x$gas_flag = xno; then conftest_s=' .section ".tdata",#alloc,#write,#tls' tls_first_major=0 tls_first_minor=0 else conftest_s=' .section ".tdata","awT",@progbits' tls_first_major=2 tls_first_minor=14 tls_as_opt="-32 --fatal-warnings" fi conftest_s="$conftest_s foo: .long 25 .text sethi %tgd_hi22(foo), %o0 add %o0, %tgd_lo10(foo), %o1 add %l7, %o1, %o0, %tgd_add(foo) call __tls_get_addr, %tgd_call(foo) sethi %tldm_hi22(foo), %l1 add %l1, %tldm_lo10(foo), %l2 add %l7, %l2, %o0, %tldm_add(foo) call __tls_get_addr, %tldm_call(foo) sethi %tldo_hix22(foo), %l3 xor %l3, %tldo_lox10(foo), %l4 add %o0, %l4, %l5, %tldo_add(foo) sethi %tie_hi22(foo), %o3 add %o3, %tie_lo10(foo), %o3 ld [%l7 + %o3], %o2, %tie_ld(foo) add %g7, %o2, %o4, %tie_add(foo) sethi %tle_hix22(foo), %l1 xor %l1, %tle_lox10(foo), %o5 ld [%g7 + %o5], %o1" ;; tilepro*-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text addli r0, zero, tls_gd(foo) auli r0, zero, tls_gd_ha16(foo) addli r0, r0, tls_gd_lo16(foo) jal __tls_get_addr addli r0, zero, tls_ie(foo) auli r0, r0, tls_ie_ha16(foo) addli r0, r0, tls_ie_lo16(foo)' tls_first_major=2 tls_first_minor=22 tls_as_opt="--fatal-warnings" ;; tilegx*-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text shl16insli r0, zero, hw0_last_tls_gd(foo) shl16insli r0, zero, hw1_last_tls_gd(foo) shl16insli r0, r0, hw0_tls_gd(foo) jal __tls_get_addr shl16insli r0, zero, hw1_last_tls_ie(foo) shl16insli r0, r0, hw0_tls_ie(foo)' tls_first_major=2 tls_first_minor=22 tls_as_opt="--fatal-warnings" ;; xtensa*-*-*) conftest_s=' .section ".tdata","awT",@progbits foo: .long 25 .text movi a8, foo@TLSFUNC movi a10, foo@TLSARG callx8.tls a8, foo@TLSCALL' tls_first_major=2 tls_first_minor=19 ;; changequote([,])dnl esac set_have_as_tls=no if test "x$enable_tls" = xno ; then : # TLS explicitly disabled. elif test "x$enable_tls" = xyes ; then set_have_as_tls=yes # TLS explicitly enabled. elif test -z "$tls_first_major"; then : # If we don't have a check, assume no support. else gcc_GAS_CHECK_FEATURE(thread-local storage support, gcc_cv_as_tls, [$tls_first_major,$tls_first_minor,0], [$tls_as_opt], [$conftest_s],, [set_have_as_tls=yes]) fi if test $set_have_as_tls = yes ; then AC_DEFINE(HAVE_AS_TLS, 1, [Define if your assembler and linker support thread-local storage.]) fi # Target-specific assembler checks. AC_MSG_CHECKING(linker -Bstatic/-Bdynamic option) gcc_cv_ld_static_dynamic=no gcc_cv_ld_static_option='-Bstatic' gcc_cv_ld_dynamic_option='-Bdynamic' if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 10 -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_static_dynamic=yes fi elif test x$gcc_cv_ld != x; then # Check if linker supports -Bstatic/-Bdynamic option if $gcc_cv_ld --help 2>/dev/null | grep -- -Bstatic > /dev/null \ && $gcc_cv_ld --help 2>/dev/null | grep -- -Bdynamic > /dev/null; then gcc_cv_ld_static_dynamic=yes else case "$target" in # AIX ld uses -b flags *-*-aix4.[[23]]* | *-*-aix[[5-9]]*) gcc_cv_ld_static_dynamic=yes gcc_cv_ld_static_option="-bstatic" gcc_cv_ld_dynamic_option="-bdynamic" ;; # HP-UX ld uses -a flags to select between shared and archive. *-*-hpux*) if test x"$gnu_ld" = xno; then gcc_cv_ld_static_dynamic=yes gcc_cv_ld_static_option="-aarchive_shared" gcc_cv_ld_dynamic_option="-adefault" fi ;; # Solaris 2 ld always supports -Bstatic/-Bdynamic. *-*-solaris2*) gcc_cv_ld_static_dynamic=yes ;; esac fi fi if test x"$gcc_cv_ld_static_dynamic" = xyes; then AC_DEFINE(HAVE_LD_STATIC_DYNAMIC, 1, [Define if your linker supports -Bstatic/-Bdynamic or equivalent options.]) AC_DEFINE_UNQUOTED(LD_STATIC_OPTION, "$gcc_cv_ld_static_option", [Define to the linker option to disable use of shared objects.]) AC_DEFINE_UNQUOTED(LD_DYNAMIC_OPTION, "$gcc_cv_ld_dynamic_option", [Define to the linker option to enable use of shared objects.]) fi AC_MSG_RESULT($gcc_cv_ld_static_dynamic) if test x"$demangler_in_ld" = xyes; then AC_MSG_CHECKING(linker --demangle support) gcc_cv_ld_demangle=no if test $in_tree_ld = yes; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 14 -o "$gcc_cv_gld_major_version" -gt 2; then \ gcc_cv_ld_demangle=yes fi elif test x$gcc_cv_ld != x -a x"$gnu_ld" = xyes; then # Check if the GNU linker supports --demangle option if $gcc_cv_ld --help 2>/dev/null | grep no-demangle > /dev/null; then gcc_cv_ld_demangle=yes fi fi if test x"$gcc_cv_ld_demangle" = xyes; then AC_DEFINE(HAVE_LD_DEMANGLE, 1, [Define if your linker supports --demangle option.]) fi AC_MSG_RESULT($gcc_cv_ld_demangle) fi AC_MSG_CHECKING(linker plugin support) gcc_cv_lto_plugin=0 if test -f liblto_plugin.la; then save_ld_ver="$ld_ver" save_ld_vers_major="$ld_vers_major" save_ld_vers_minor="$ld_vers_minor" save_ld_is_gold="$ld_is_gold" ld_is_gold=no if test $in_tree_ld = yes -a x"$ORIGINAL_PLUGIN_LD_FOR_TARGET" = x"$gcc_cv_ld"; then ld_ver="GNU ld" # FIXME: ld_is_gold? ld_vers_major="$gcc_cv_gld_major_version" ld_vers_minor="$gcc_cv_gld_minor_version" else # Determine plugin linker version. # FIXME: Partial duplicate from above, generalize. changequote(,)dnl ld_ver=`$ORIGINAL_PLUGIN_LD_FOR_TARGET --version 2>/dev/null | sed 1q` if echo "$ld_ver" | grep GNU > /dev/null; then if echo "$ld_ver" | grep "GNU gold" > /dev/null; then ld_is_gold=yes ld_vers=`echo $ld_ver | sed -n \ -e 's,^[^)]*[ ]\([0-9][0-9]*\.[0-9][0-9]*[^)]*\)) .*$,\1,p'` else ld_vers=`echo $ld_ver | sed -n \ -e 's,^.*[ ]\([0-9][0-9]*\.[0-9][0-9]*.*\)$,\1,p'` fi ld_vers_major=`expr "$ld_vers" : '\([0-9]*\)'` ld_vers_minor=`expr "$ld_vers" : '[0-9]*\.\([0-9]*\)'` fi changequote([,])dnl fi # Determine plugin support. if echo "$ld_ver" | grep GNU > /dev/null; then # Require GNU ld or gold 2.21+ for plugin support by default. if test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -ge 21; then gcc_cv_lto_plugin=2 # Allow -fuse-linker-plugin to enable plugin support in GNU gold 2.20. elif test "$ld_is_gold" = yes -a "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -eq 20; then gcc_cv_lto_plugin=1 fi fi ld_ver="$save_ld_ver" ld_vers_major="$save_ld_vers_major" ld_vers_minor="$save_ld_vers_minor" ld_is_gold="$save_ld_is_gold" fi AC_DEFINE_UNQUOTED(HAVE_LTO_PLUGIN, $gcc_cv_lto_plugin, [Define to the level of your linker's plugin support.]) AC_MSG_RESULT($gcc_cv_lto_plugin) case "$target" in aarch64*-*-*) gcc_GAS_CHECK_FEATURE([-mabi option], gcc_cv_as_aarch64_mabi,, [-mabi=lp64], [.text],,,) if test x$gcc_cv_as_aarch64_mabi = xyes; then AC_DEFINE(HAVE_AS_MABI_OPTION, 1, [Define if your assembler supports the -mabi option.]) else if test x$with_abi = xilp32; then AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\ Upgrade the Assembler.]) fi if test x"$with_multilib_list" = xdefault; then TM_MULTILIB_CONFIG=lp64 else aarch64_multilibs=`echo $with_multilib_list | sed -e 's/,/ /g'` for aarch64_multilib in ${aarch64_multilibs}; do case ${aarch64_multilib} in ilp32) AC_MSG_ERROR([Assembler does not support -mabi=ilp32.\ Upgrade the Assembler.]) ;; *) ;; esac done fi fi # Check if we have binutils support for relocations types needed by -fpic gcc_GAS_CHECK_FEATURE([-fpic relocs], gcc_cv_as_aarch64_picreloc,,, [ .text ldr x0, [[x2, #:gotpage_lo15:globalsym]] ],,[AC_DEFINE(HAVE_AS_SMALL_PIC_RELOCS, 1, [Define if your assembler supports relocs needed by -fpic.])]) # Enable default workaround for AArch64 Cortex-A53 erratum 835769. AC_ARG_ENABLE(fix-cortex-a53-835769, [ AS_HELP_STRING([--enable-fix-cortex-a53-835769], [enable workaround for AArch64 Cortex-A53 erratum 835769 by default]) AS_HELP_STRING([--disable-fix-cortex-a53-835769], [disable workaround for AArch64 Cortex-A53 erratum 835769 by default]) ], [ case $enableval in yes) tm_defines="${tm_defines} TARGET_FIX_ERR_A53_835769_DEFAULT=1" ;; no) ;; *) AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-835769.\ Valid choices are 'yes' and 'no'.]) ;; esac ], []) # Enable default workaround for AArch64 Cortex-A53 erratum 843419. AC_ARG_ENABLE(fix-cortex-a53-843419, [ AS_HELP_STRING([--enable-fix-cortex-a53-843419], [enable workaround for AArch64 Cortex-A53 erratum 843419 by default]) AS_HELP_STRING([--disable-fix-cortex-a53-843419], [disable workaround for AArch64 Cortex-A53 erratum 843419 by default]) ], [ case $enableval in yes) tm_defines="${tm_defines} TARGET_FIX_ERR_A53_843419_DEFAULT=1" ;; no) ;; *) AC_MSG_ERROR(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\ Valid choices are 'yes' and 'no'.]) ;; esac ], []) ;; # All TARGET_ABI_OSF targets. alpha*-*-linux* | alpha*-*-*bsd*) gcc_GAS_CHECK_FEATURE([explicit relocation support], gcc_cv_as_alpha_explicit_relocs, [2,12,0],, [ .set nomacro .text extbl $3, $2, $3 !lituse_bytoff!1 ldq $2, a($29) !literal!1 ldq $4, b($29) !literal!2 ldq_u $3, 0($2) !lituse_base!1 ldq $27, f($29) !literal!5 jsr $26, ($27), f !lituse_jsr!5 ldah $29, 0($26) !gpdisp!3 lda $0, c($29) !gprel ldah $1, d($29) !gprelhigh lda $1, d($1) !gprellow lda $29, 0($29) !gpdisp!3],, [AC_DEFINE(HAVE_AS_EXPLICIT_RELOCS, 1, [Define if your assembler supports explicit relocations.])]) gcc_GAS_CHECK_FEATURE([jsrdirect relocation support], gcc_cv_as_alpha_jsrdirect_relocs, [2,16,90],, [ .set nomacro .text ldq $27, a($29) !literal!1 jsr $26, ($27), a !lituse_jsrdirect!1],, [AC_DEFINE(HAVE_AS_JSRDIRECT_RELOCS, 1, [Define if your assembler supports the lituse_jsrdirect relocation.])]) ;; avr-*-*) gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,, [--mlink-relax], [.text],, [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1, [Define if your avr assembler supports --mlink-relax option.])]) gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,, [-mrmw], [.text],, [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1, [Define if your avr assembler supports -mrmw option.])]) ;; cris-*-*) gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option], gcc_cv_as_cris_no_mul_bug,[2,15,91], [-no-mul-bug-abort], [.text],, [AC_DEFINE(HAVE_AS_NO_MUL_BUG_ABORT_OPTION, 1, [Define if your assembler supports the -no-mul-bug-abort option.])]) ;; sparc*-*-*) gcc_GAS_CHECK_FEATURE([.register], gcc_cv_as_sparc_register_op,,, [.register %g2, #scratch],, [AC_DEFINE(HAVE_AS_REGISTER_PSEUDO_OP, 1, [Define if your assembler supports .register.])]) gcc_GAS_CHECK_FEATURE([-relax option], gcc_cv_as_sparc_relax,, [-relax], [.text],, [AC_DEFINE(HAVE_AS_RELAX_OPTION, 1, [Define if your assembler supports -relax option.])]) gcc_GAS_CHECK_FEATURE([GOTDATA_OP relocs], gcc_cv_as_sparc_gotdata_op,, [-K PIC], [.text .align 4 foo: nop bar: sethi %gdop_hix22(foo), %g1 xor %g1, %gdop_lox10(foo), %g1 ld [[%l7 + %g1]], %g2, %gdop(foo)], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then if test x$gcc_cv_objdump != x; then if $gcc_cv_objdump -s -j .text conftest 2> /dev/null \ | grep ' 03000004 82186004 c405c001'> /dev/null 2>&1; then gcc_cv_as_sparc_gotdata_op=no else gcc_cv_as_sparc_gotdata_op=yes fi fi fi rm -f conftest], [AC_DEFINE(HAVE_AS_SPARC_GOTDATA_OP, 1, [Define if your assembler and linker support GOTDATA_OP relocs.])]) gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs], gcc_cv_as_sparc_ua_pcrel,, [-K PIC], [.text foo: nop .data .align 4 .byte 0 .uaword %r_disp32(foo)], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1; then gcc_cv_as_sparc_ua_pcrel=yes fi rm -f conftest], [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL, 1, [Define if your assembler and linker support unaligned PC relative relocs.]) gcc_GAS_CHECK_FEATURE([unaligned pcrel relocs against hidden symbols], gcc_cv_as_sparc_ua_pcrel_hidden,, [-K PIC], [.data .align 4 .byte 0x31 .uaword %r_disp32(foo) .byte 0x32, 0x33, 0x34 .global foo .hidden foo foo: .skip 4], [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ && $gcc_cv_ld -o conftest conftest.o -G > /dev/null 2>&1 \ && $gcc_cv_objdump -s -j .data conftest 2> /dev/null \ | grep ' 31000000 07323334' > /dev/null 2>&1; then if $gcc_cv_objdump -R conftest 2> /dev/null \ | grep 'DISP32' > /dev/null 2>&1; then : else gcc_cv_as_sparc_ua_pcrel_hidden=yes fi fi rm -f conftest], [AC_DEFINE(HAVE_AS_SPARC_UA_PCREL_HIDDEN, 1, [Define if your assembler and linker support unaligned PC relative relocs against hidden symbols.])]) ]) # unaligned pcrel relocs gcc_GAS_CHECK_FEATURE([offsetable %lo()], gcc_cv_as_sparc_offsetable_lo10,, [-xarch=v9], [.text or %g1, %lo(ab) + 12, %g1 or %g1, %lo(ab + 12), %g1], [if test x$gcc_cv_objdump != x \ && $gcc_cv_objdump -s -j .text conftest.o 2> /dev/null \ | grep ' 82106000 82106000' > /dev/null 2>&1; then gcc_cv_as_sparc_offsetable_lo10=yes fi], [AC_DEFINE(HAVE_AS_OFFSETABLE_LO10, 1, [Define if your assembler supports offsetable %lo().])]) gcc_GAS_CHECK_FEATURE([FMAF, HPC, and VIS 3.0 instructions], gcc_cv_as_sparc_fmaf,, [-xarch=v9d], [.text .register %g2, #scratch .register %g3, #scratch .align 4 fmaddd %f0, %f2, %f4, %f6 addxccc %g1, %g2, %g3 fsrl32 %f2, %f4, %f8 fnaddd %f10, %f12, %f14],, [AC_DEFINE(HAVE_AS_FMAF_HPC_VIS3, 1, [Define if your assembler supports FMAF, HPC, and VIS 3.0 instructions.])]) gcc_GAS_CHECK_FEATURE([SPARC4 instructions], gcc_cv_as_sparc_sparc4,, [-xarch=sparc4], [.text .register %g2, #scratch .register %g3, #scratch .align 4 cxbe %g2, %g3, 1f 1: cwbneg %g2, %g3, 1f 1: sha1 md5 aes_kexpand0 %f4, %f6, %f8 des_round %f38, %f40, %f42, %f44 camellia_f %f54, %f56, %f58, %f60 kasumi_fi_xor %f46, %f48, %f50, %f52],, [AC_DEFINE(HAVE_AS_SPARC4, 1, [Define if your assembler supports SPARC4 instructions.])]) gcc_GAS_CHECK_FEATURE([SPARC5 and VIS 4.0 instructions], gcc_cv_as_sparc_sparc5,, [-xarch=sparc5], [.text .register %g2, #scratch .register %g3, #scratch .align 4 subxc %g1, %g2, %g3 fpadd8 %f0, %f2, %f4],, [AC_DEFINE(HAVE_AS_SPARC5_VIS4, 1, [Define if your assembler supports SPARC5 and VIS 4.0 instructions.])]) gcc_GAS_CHECK_FEATURE([LEON instructions], gcc_cv_as_sparc_leon,, [-Aleon], [.text .register %g2, #scratch .register %g3, #scratch .align 4 smac %g2, %g3, %g1 umac %g2, %g3, %g1 casa [[%g2]] 0xb, %g3, %g1],, [AC_DEFINE(HAVE_AS_LEON, 1, [Define if your assembler supports LEON instructions.])]) ;; changequote(,)dnl i[34567]86-*-* | x86_64-*-*) changequote([,])dnl case $target_os in cygwin*) # Full C++ conformance when using a shared libstdc++-v3 requires some # support from the Cygwin DLL, which in more recent versions exports # wrappers to aid in interposing and redirecting operators new, delete, # etc., as per n2800 #17.6.4.6 [replacement.functions]. Check if we # are configuring for a version of Cygwin that exports the wrappers. if test x$host = x$target && test x$host_cpu = xi686; then AC_CHECK_FUNC([__wrap__Znaj],[gcc_ac_cygwin_dll_wrappers=yes],[gcc_ac_cygwin_dll_wrappers=no]) else # Can't check presence of libc functions during cross-compile, so # we just have to assume we're building for an up-to-date target. gcc_ac_cygwin_dll_wrappers=yes fi AC_DEFINE_UNQUOTED(USE_CYGWIN_LIBSTDCXX_WRAPPERS, [`if test $gcc_ac_cygwin_dll_wrappers = yes; then echo 1; else echo 0; fi`], [Define if you want to generate code by default that assumes that the Cygwin DLL exports wrappers to support libstdc++ function replacement.]) esac case $target_os in cygwin* | pe | mingw32*) # Recent binutils allows the three-operand form of ".comm" on PE. This # definition is used unconditionally to initialise the default state of # the target option variable that governs usage of the feature. gcc_GAS_CHECK_FEATURE([.comm with alignment], gcc_cv_as_comm_has_align, [2,19,52],,[.comm foo,1,32]) AC_DEFINE_UNQUOTED(HAVE_GAS_ALIGNED_COMM, [`if test $gcc_cv_as_comm_has_align = yes; then echo 1; else echo 0; fi`], [Define if your assembler supports specifying the alignment of objects allocated using the GAS .comm command.]) # Used for DWARF 2 in PE gcc_GAS_CHECK_FEATURE([.secrel32 relocs], gcc_cv_as_ix86_pe_secrel32, [2,15,91],, [.text foo: nop .data .secrel32 foo], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld -o conftest conftest.o > /dev/null 2>&1; then gcc_cv_as_ix86_pe_secrel32=yes fi rm -f conftest], [AC_DEFINE(HAVE_GAS_PE_SECREL32_RELOC, 1, [Define if your assembler and linker support 32-bit section relative relocs via '.secrel32 label'.])]) # Test if the assembler supports the extended form of the .section # directive that specifies section alignment. LTO support uses this, # but normally only after installation, so we warn but don't fail the # configure if LTO is enabled but the assembler does not support it. gcc_GAS_CHECK_FEATURE([.section with alignment], gcc_cv_as_section_has_align, [2,20,1],-fatal-warnings,[.section lto_test,"dr0"]) if test x$gcc_cv_as_section_has_align != xyes; then case ",$enable_languages," in *,lto,*) AC_MSG_WARN([LTO for $target requires binutils >= 2.20.1, but version found appears insufficient; LTO will not work until binutils is upgraded.]) ;; esac fi ;; esac # Test if the assembler supports the section flag 'e' for specifying # an excluded section. gcc_GAS_CHECK_FEATURE([.section with e], gcc_cv_as_section_has_e, [2,22,51], [--fatal-warnings], [.section foo1,"e" .byte 0,0,0,0]) AC_DEFINE_UNQUOTED(HAVE_GAS_SECTION_EXCLUDE, [`if test $gcc_cv_as_section_has_e = yes; then echo 1; else echo 0; fi`], [Define if your assembler supports specifying the section flag e.]) gcc_GAS_CHECK_FEATURE([filds and fists mnemonics], gcc_cv_as_ix86_filds,,, [filds (%ebp); fists (%ebp)],, [AC_DEFINE(HAVE_AS_IX86_FILDS, 1, [Define if your assembler uses filds and fists mnemonics.])]) gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics], gcc_cv_as_ix86_fildq,,, [fildq (%ebp); fistpq (%ebp)],, [AC_DEFINE(HAVE_AS_IX86_FILDQ, 1, [Define if your assembler uses fildq and fistq mnemonics.])]) gcc_GAS_CHECK_FEATURE([cmov syntax], gcc_cv_as_ix86_cmov_sun_syntax,,, [cmovl.l %edx, %eax],, [AC_DEFINE(HAVE_AS_IX86_CMOV_SUN_SYNTAX, 1, [Define if your assembler supports the Sun syntax for cmov.])]) gcc_GAS_CHECK_FEATURE([ffreep mnemonic], gcc_cv_as_ix86_ffreep,,, [ffreep %st(1)],, [AC_DEFINE(HAVE_AS_IX86_FFREEP, 1, [Define if your assembler supports the ffreep mnemonic.])]) gcc_GAS_CHECK_FEATURE([.quad directive], gcc_cv_as_ix86_quad,,, [.quad 0],, [AC_DEFINE(HAVE_AS_IX86_QUAD, 1, [Define if your assembler supports the .quad directive.])]) gcc_GAS_CHECK_FEATURE([sahf mnemonic], gcc_cv_as_ix86_sahf,,, [.code64 sahf],, [AC_DEFINE(HAVE_AS_IX86_SAHF, 1, [Define if your assembler supports the sahf mnemonic in 64bit mode.])]) gcc_GAS_CHECK_FEATURE([interunit movq mnemonic], gcc_cv_as_ix86_interunit_movq,,, [.code64 movq %mm0, %rax movq %rax, %xmm0]) AC_DEFINE_UNQUOTED(HAVE_AS_IX86_INTERUNIT_MOVQ, [`if test $gcc_cv_as_ix86_interunit_movq = yes; then echo 1; else echo 0; fi`], [Define if your assembler supports interunit movq mnemonic.]) gcc_GAS_CHECK_FEATURE([hle prefixes], gcc_cv_as_ix86_hle,,, [lock xacquire cmpxchg %esi, (%ecx)],, [AC_DEFINE(HAVE_AS_IX86_HLE, 1, [Define if your assembler supports HLE prefixes.])]) gcc_GAS_CHECK_FEATURE([swap suffix], gcc_cv_as_ix86_swap,,, [movl.s %esp, %ebp],, [AC_DEFINE(HAVE_AS_IX86_SWAP, 1, [Define if your assembler supports the swap suffix.])]) gcc_GAS_CHECK_FEATURE([different section symbol subtraction], gcc_cv_as_ix86_diff_sect_delta,,, [.section .rodata .L1: .long .L2-.L1 .long .L3-.L1 .text .L3: nop .L2: nop],, [AC_DEFINE(HAVE_AS_IX86_DIFF_SECT_DELTA, 1, [Define if your assembler supports the subtraction of symbols in different sections.])]) gcc_GAS_CHECK_FEATURE([rep and lock prefix], gcc_cv_as_ix86_rep_lock_prefix,,, [rep movsl rep ret rep nop rep bsf %ecx, %eax rep bsr %ecx, %eax lock addl %edi, (%eax,%esi) lock orl $0, (%esp)],, [AC_DEFINE(HAVE_AS_IX86_REP_LOCK_PREFIX, 1, [Define if the assembler supports 'rep , lock '.])]) gcc_GAS_CHECK_FEATURE([ud2 mnemonic], gcc_cv_as_ix86_ud2,,, [ud2],, [AC_DEFINE(HAVE_AS_IX86_UD2, 1, [Define if your assembler supports the 'ud2' mnemonic.])]) # Enforce 32-bit output with gas and gld. if test x$gas = xyes; then as_ix86_gas_32_opt="--32" fi if echo "$ld_ver" | grep GNU > /dev/null; then if $gcc_cv_ld -V 2>/dev/null | grep elf_i386_sol2 > /dev/null; then ld_ix86_gld_32_opt="-melf_i386_sol2" else ld_ix86_gld_32_opt="-melf_i386" fi fi gcc_GAS_CHECK_FEATURE([R_386_TLS_GD_PLT reloc], gcc_cv_as_ix86_tlsgdplt,, [$as_ix86_gas_32_opt], [call tls_gd@tlsgdplt], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then gcc_cv_as_ix86_tlsgdplt=yes fi rm -f conftest], [AC_DEFINE(HAVE_AS_IX86_TLSGDPLT, 1, [Define if your assembler and linker support @tlsgdplt.])]) conftest_s=' .section .tdata,"aw'$tls_section_flag'",@progbits tls_ld: .section .text,"ax",@progbits call tls_ld@tlsldmplt' gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM_PLT reloc], gcc_cv_as_ix86_tlsldmplt,, [$as_ix86_gas_32_opt], [$conftest_s], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o -G > /dev/null 2>&1; then gcc_cv_as_ix86_tlsldmplt=yes fi rm -f conftest]) AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDMPLT, [`if test $gcc_cv_as_ix86_tlsldmplt = yes; then echo 1; else echo 0; fi`], [Define to 1 if your assembler and linker support @tlsldmplt.]) conftest_s=' .section .text,"ax",@progbits .globl _start .type _start, @function _start: leal value@tlsldm(%ebx), %eax call ___tls_get_addr@plt .section .tdata,"aw'$tls_section_flag'",@progbits .type value, @object value:' gcc_GAS_CHECK_FEATURE([R_386_TLS_LDM reloc], gcc_cv_as_ix86_tlsldm,, [$as_ix86_gas_32_opt], [$conftest_s], [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o $ld_tls_libs -lc > /dev/null 2>&1; then if $gcc_cv_objdump -d conftest 2>/dev/null | grep nop > /dev/null \ || dis conftest 2>/dev/null | grep nop > /dev/null; then gcc_cv_as_ix86_tlsldm=yes fi fi rm -f conftest]) AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLSLDM, [`if test $gcc_cv_as_ix86_tlsldm = yes; then echo 1; else echo 0; fi`], [Define to 1 if your assembler and linker support @tlsldm.]) conftest_s=' .data bar: .byte 1 .text .global _start _start: cmpl $0, bar@GOT jmp *_start@GOT' gcc_GAS_CHECK_FEATURE([R_386_GOT32X reloc], gcc_cv_as_ix86_got32x,, [$as_ix86_gas_32_opt], [$conftest_s], [if test x$gcc_cv_ld != x && test x$gcc_cv_objdump != x \ && test x$gcc_cv_readelf != x \ && $gcc_cv_readelf --relocs --wide conftest.o 2>&1 \ | grep R_386_GOT32X > /dev/null 2>&1 \ && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then if $gcc_cv_objdump -dw conftest 2>&1 \ | grep 0xffffff > /dev/null 2>&1; then gcc_cv_as_ix86_got32x=no else gcc_cv_as_ix86_got32x=yes fi fi rm -f conftest]) AC_DEFINE_UNQUOTED(HAVE_AS_IX86_GOT32X, [`if test x"$gcc_cv_as_ix86_got32x" = xyes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler and linker support @GOT.]) gcc_GAS_CHECK_FEATURE([GOTOFF in data], gcc_cv_as_ix86_gotoff_in_data, [2,11,0], [$as_ix86_gas_32_opt], [ .text .L0: nop .data .long .L0@GOTOFF]) AC_DEFINE_UNQUOTED(HAVE_AS_GOTOFF_IN_DATA, [`if test $gcc_cv_as_ix86_gotoff_in_data = yes; then echo 1; else echo 0; fi`], [Define true if the assembler supports '.long foo@GOTOFF'.]) conftest_s=' .section .text,"ax",@progbits .globl _start .type _start, @function _start: leal ld@tlsldm(%ecx), %eax call *___tls_get_addr@GOT(%ecx) leal gd@tlsgd(%ecx), %eax call *___tls_get_addr@GOT(%ecx) .section .tdata,"aw'$tls_section_flag'",@progbits .type ld, @object ld: .byte 0 .globl gd .type gd, @object gd: .byte 0' gcc_GAS_CHECK_FEATURE([calling ___tls_get_addr via GOT], gcc_cv_as_ix86_tls_get_addr_via_got,, [$as_ix86_gas_32_opt], [$conftest_s], [if test x$gcc_cv_ld != x \ && $gcc_cv_ld $ld_ix86_gld_32_opt -o conftest conftest.o > /dev/null 2>&1; then gcc_cv_as_ix86_tls_get_addr_via_got=yes fi rm -f conftest]) AC_DEFINE_UNQUOTED(HAVE_AS_IX86_TLS_GET_ADDR_GOT, [`if test x"$gcc_cv_as_ix86_tls_get_addr_via_got" = xyes; then echo 1; else echo 0; fi`], [Define 0/1 if your assembler and linker support calling ___tls_get_addr via GOT.]) ;; ia64*-*-*) gcc_GAS_CHECK_FEATURE([ltoffx and ldxmov relocs], gcc_cv_as_ia64_ltoffx_ldxmov_relocs, [2,14,0],, [ .text addl r15 = @ltoffx(x#), gp ;; ld8.mov r16 = [[r15]], x#],, [AC_DEFINE(HAVE_AS_LTOFFX_LDXMOV_RELOCS, 1, [Define if your assembler supports ltoffx and ldxmov relocations.])]) ;; powerpc*-*-*) case $target in *-*-darwin*) gcc_GAS_CHECK_FEATURE([.machine directive support], gcc_cv_as_machine_directive,,, [ .machine ppc7400]) if test x$gcc_cv_as_machine_directive != xyes; then echo "*** This target requires an assembler supporting \".machine\"" >&2 echo you can get it from: ftp://gcc.gnu.org/pub/gcc/infrastructure/cctools-528.5.dmg >&2 test x$build = x$target && exit 1 fi ;; esac case $target in *-*-aix*) conftest_s=' .machine "pwr5" .csect .text[[PR]] mfcr 3,128';; *-*-darwin*) conftest_s=' .text mfcr r3,128';; *) conftest_s=' .machine power4 .text mfcr 3,128';; esac gcc_GAS_CHECK_FEATURE([mfcr field support], gcc_cv_as_powerpc_mfcrf, [2,14,0],, [$conftest_s],, [AC_DEFINE(HAVE_AS_MFCRF, 1, [Define if your assembler supports mfcr field.])]) case $target in *-*-aix*) conftest_s=' .machine "pwr5" .csect .text[[PR]] popcntb 3,3';; *) conftest_s=' .machine power5 .text popcntb 3,3';; esac gcc_GAS_CHECK_FEATURE([popcntb support], gcc_cv_as_powerpc_popcntb, [2,17,0],, [$conftest_s],, [AC_DEFINE(HAVE_AS_POPCNTB, 1, [Define if your assembler supports popcntb field.])]) case $target in *-*-aix*) conftest_s=' .machine "pwr5x" .csect .text[[PR]] frin 1,1';; *) conftest_s=' .machine power5 .text frin 1,1';; esac gcc_GAS_CHECK_FEATURE([fp round support], gcc_cv_as_powerpc_fprnd, [2,17,0],, [$conftest_s],, [AC_DEFINE(HAVE_AS_FPRND, 1, [Define if your assembler supports fprnd.])]) case $target in *-*-aix*) conftest_s=' .machine "pwr6" .csect .text[[PR]] mffgpr 1,3';; *) conftest_s=' .machine power6 .text mffgpr 1,3';; esac gcc_GAS_CHECK_FEATURE([move fp gpr support], gcc_cv_as_powerpc_mfpgpr, [2,19,2],, [$conftest_s],, [AC_DEFINE(HAVE_AS_MFPGPR, 1, [Define if your assembler supports mffgpr and mftgpr.])]) case $target in *-*-aix*) conftest_s=' .csect .text[[PR]] LCF..0: addis 11,30,_GLOBAL_OFFSET_TABLE_-LCF..0@ha';; *-*-darwin*) conftest_s=' .text LCF0: addis r11,r30,_GLOBAL_OFFSET_TABLE_-LCF0@ha';; *) conftest_s=' .text .LCF0: addis 11,30,_GLOBAL_OFFSET_TABLE_-.LCF0@ha';; esac gcc_GAS_CHECK_FEATURE([rel16 relocs], gcc_cv_as_powerpc_rel16, [2,17,0], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_REL16, 1, [Define if your assembler supports R_PPC_REL16 relocs.])]) case $target in *-*-aix*) conftest_s=' .machine "pwr6" .csect .text[[PR]] cmpb 3,4,5';; *) conftest_s=' .machine power6 .text cmpb 3,4,5';; esac gcc_GAS_CHECK_FEATURE([compare bytes support], gcc_cv_as_powerpc_cmpb, [2,19,2], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_CMPB, 1, [Define if your assembler supports cmpb.])]) case $target in *-*-aix*) conftest_s=' .machine "pwr6" .csect .text[[PR]] dadd 1,2,3';; *) conftest_s=' .machine power6 .text dadd 1,2,3';; esac gcc_GAS_CHECK_FEATURE([decimal float support], gcc_cv_as_powerpc_dfp, [2,19,2], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_DFP, 1, [Define if your assembler supports DFP instructions.])]) case $target in *-*-aix*) conftest_s=' .machine "pwr7" .csect .text[[PR]] lxvd2x 1,2,3';; *) conftest_s=' .machine power7 .text lxvd2x 1,2,3';; esac gcc_GAS_CHECK_FEATURE([vector-scalar support], gcc_cv_as_powerpc_vsx, [2,19,2], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_VSX, 1, [Define if your assembler supports VSX instructions.])]) case $target in *-*-aix*) conftest_s=' .machine "pwr7" .csect .text[[PR]] popcntd 3,3';; *) conftest_s=' .machine power7 .text popcntd 3,3';; esac gcc_GAS_CHECK_FEATURE([popcntd support], gcc_cv_as_powerpc_popcntd, [2,19,2], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_POPCNTD, 1, [Define if your assembler supports POPCNTD instructions.])]) case $target in *-*-aix*) conftest_s=' .machine "pwr8" .csect .text[[PR]]';; *) conftest_s=' .machine power8 .text';; esac gcc_GAS_CHECK_FEATURE([power8 support], gcc_cv_as_powerpc_power8, [2,19,2], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_POWER8, 1, [Define if your assembler supports POWER8 instructions.])]) case $target in *-*-aix*) conftest_s=' .machine "pwr9" .csect .text[[PR]]';; *) conftest_s=' .machine power9 .text';; esac gcc_GAS_CHECK_FEATURE([power9 support], gcc_cv_as_powerpc_power9, [2,19,2], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_POWER9, 1, [Define if your assembler supports POWER9 instructions.])]) case $target in *-*-aix*) conftest_s=' .csect .text[[PR]] lwsync';; *) conftest_s=' .text lwsync';; esac gcc_GAS_CHECK_FEATURE([lwsync support], gcc_cv_as_powerpc_lwsync, [2,19,2], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_LWSYNC, 1, [Define if your assembler supports LWSYNC instructions.])]) case $target in *-*-aix*) conftest_s=' .machine "476" .csect .text[[PR]] dci 0';; *) conftest_s=' .machine "476" .text dci 0';; esac gcc_GAS_CHECK_FEATURE([data cache invalidate support], gcc_cv_as_powerpc_dci, [9,99,0], -a32, [$conftest_s],, [AC_DEFINE(HAVE_AS_DCI, 1, [Define if your assembler supports the DCI/ICI instructions.])]) gcc_GAS_CHECK_FEATURE([.gnu_attribute support], gcc_cv_as_powerpc_gnu_attribute, [2,18,0],, [.gnu_attribute 4,1],, [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, [Define if your assembler supports .gnu_attribute.])]) gcc_GAS_CHECK_FEATURE([tls marker support], gcc_cv_as_powerpc_tls_markers, [2,20,0],, [ bl __tls_get_addr(x@tlsgd)],, [AC_DEFINE(HAVE_AS_TLS_MARKERS, 1, [Define if your assembler supports arg info for __tls_get_addr.])]) gcc_GAS_CHECK_FEATURE([prologue entry point marker support], gcc_cv_as_powerpc_entry_markers, [2,26,0],-a64 --fatal-warnings, [ .reloc .,R_PPC64_ENTRY; nop],, [AC_DEFINE(HAVE_AS_ENTRY_MARKERS, 1, [Define if your assembler supports the R_PPC64_ENTRY relocation.])]) case $target in *-*-aix*) gcc_GAS_CHECK_FEATURE([AIX .ref support], gcc_cv_as_aix_ref, [2,21,0],, [ .csect stuff[[rw]] stuff: .long 1 .extern sym .ref sym ],, [AC_DEFINE(HAVE_AS_REF, 1, [Define if your assembler supports .ref])]) gcc_GAS_CHECK_FEATURE([AIX DWARF location lists section support], gcc_cv_as_aix_dwloc, [2,21,0],, [ .dwsect 0xA0000 Lframe..0: .vbyte 4,Lframe..0 ],, [AC_DEFINE(HAVE_XCOFF_DWARF_EXTRAS, 1, [Define if your assembler supports AIX debug frame section label reference.])]) ;; esac ;; mips*-*-*) gcc_GAS_CHECK_FEATURE([explicit relocation support], gcc_cv_as_mips_explicit_relocs, [2,14,0],, [ lw $4,%gp_rel(foo)($4)],, [if test x$target_cpu_default = x then target_cpu_default=MASK_EXPLICIT_RELOCS else target_cpu_default="($target_cpu_default)|MASK_EXPLICIT_RELOCS" fi]) gcc_GAS_CHECK_FEATURE([-mno-shared support], gcc_cv_as_mips_no_shared, [2,16,0], [-mno-shared], [nop],, [AC_DEFINE(HAVE_AS_NO_SHARED, 1, [Define if the assembler understands -mno-shared.])]) gcc_GAS_CHECK_FEATURE([.gnu_attribute support], gcc_cv_as_mips_gnu_attribute, [2,18,0],, [.gnu_attribute 4,1],, [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, [Define if your assembler supports .gnu_attribute.])]) gcc_GAS_CHECK_FEATURE([.module support], gcc_cv_as_mips_dot_module,,[-32], [.module mips2 .module fp=xx],, [AC_DEFINE(HAVE_AS_DOT_MODULE, 1, [Define if your assembler supports .module.])]) if test x$gcc_cv_as_mips_dot_module = xno \ && test x$with_fp_32 != x; then AC_MSG_ERROR( [Requesting --with-fp-32= requires assembler support for .module.]) fi gcc_GAS_CHECK_FEATURE([.micromips support], gcc_cv_as_micromips_support,,[--fatal-warnings], [.set micromips],, [AC_DEFINE(HAVE_GAS_MICROMIPS, 1, [Define if your assembler supports the .set micromips directive])]) gcc_GAS_CHECK_FEATURE([.dtprelword support], gcc_cv_as_mips_dtprelword, [2,18,0],, [.section .tdata,"awT",@progbits x: .word 2 .text .dtprelword x+0x8000],, [AC_DEFINE(HAVE_AS_DTPRELWORD, 1, [Define if your assembler supports .dtprelword.])]) gcc_GAS_CHECK_FEATURE([DSPR1 mult with four accumulators support], gcc_cv_as_mips_dspr1_mult,,, [ .set mips32r2 .set nodspr2 .set dsp madd $ac3,$4,$5 maddu $ac3,$4,$5 msub $ac3,$4,$5 msubu $ac3,$4,$5 mult $ac3,$4,$5 multu $ac3,$4,$5],, [AC_DEFINE(HAVE_AS_DSPR1_MULT, 1, [Define if your assembler supports DSPR1 mult.])]) AC_MSG_CHECKING(assembler and linker for explicit JALR relocation) gcc_cv_as_ld_jalr_reloc=no if test $gcc_cv_as_mips_explicit_relocs = yes; then if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 20 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_as_ld_jalr_reloc=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x; then echo ' .ent x' > conftest.s echo 'x: lw $2,%got_disp(y)($3)' >> conftest.s echo ' lw $25,%call16(y)($28)' >> conftest.s echo ' .reloc 1f,R_MIPS_JALR,y' >> conftest.s echo '1: jalr $25' >> conftest.s echo ' .reloc 1f,R_MIPS_JALR,x' >> conftest.s echo '1: jalr $25' >> conftest.s echo ' .end x' >> conftest.s if $gcc_cv_as -o conftest.o conftest.s >/dev/null 2>&AS_MESSAGE_LOG_FD \ && $gcc_cv_ld -shared -o conftest.so conftest.o >/dev/null 2>&AS_MESSAGE_LOG_FD; then if $gcc_cv_objdump -d conftest.so | grep jalr >/dev/null 2>&1 \ && $gcc_cv_objdump -d conftest.so | grep "bal.*" >/dev/null 2>&1; then gcc_cv_as_ld_jalr_reloc=yes fi fi rm -f conftest.* fi fi if test $gcc_cv_as_ld_jalr_reloc = yes; then if test x$target_cpu_default = x; then target_cpu_default=MASK_RELAX_PIC_CALLS else target_cpu_default="($target_cpu_default)|MASK_RELAX_PIC_CALLS" fi fi AC_MSG_RESULT($gcc_cv_as_ld_jalr_reloc) AC_CACHE_CHECK([linker for .eh_frame personality relaxation], [gcc_cv_ld_mips_personality_relaxation], [gcc_cv_ld_mips_personality_relaxation=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 \ -a "$gcc_cv_gld_minor_version" -ge 21 \ -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_mips_personality_relaxation=yes fi elif test x$gcc_cv_as != x \ -a x$gcc_cv_ld != x \ -a x$gcc_cv_readelf != x ; then cat > conftest.s < /dev/null 2>&1 \ && $gcc_cv_ld -o conftest conftest.o -shared > /dev/null 2>&1; then if $gcc_cv_readelf -d conftest 2>&1 \ | grep TEXTREL > /dev/null 2>&1; then : elif $gcc_cv_readelf --relocs conftest 2>&1 \ | grep 'R_MIPS_REL32 *$' > /dev/null 2>&1; then : else gcc_cv_ld_mips_personality_relaxation=yes fi fi fi rm -f conftest.s conftest.o conftest]) if test x$gcc_cv_ld_mips_personality_relaxation = xyes; then AC_DEFINE(HAVE_LD_PERSONALITY_RELAXATION, 1, [Define if your linker can relax absolute .eh_frame personality pointers into PC-relative form.]) fi gcc_GAS_CHECK_FEATURE([-mnan= support], gcc_cv_as_mips_nan,, [-mnan=2008],,, [AC_DEFINE(HAVE_AS_NAN, 1, [Define if the assembler understands -mnan=.])]) if test x$gcc_cv_as_mips_nan = xno \ && test x$with_nan != x; then AC_MSG_ERROR( [Requesting --with-nan= requires assembler support for -mnan=]) fi ;; s390*-*-*) gcc_GAS_CHECK_FEATURE([.gnu_attribute support], gcc_cv_as_s390_gnu_attribute, [2,18,0],, [.gnu_attribute 8,1],, [AC_DEFINE(HAVE_AS_GNU_ATTRIBUTE, 1, [Define if your assembler supports .gnu_attribute.])]) gcc_GAS_CHECK_FEATURE([.machine and .machinemode support], gcc_cv_as_s390_machine_machinemode, [2,24,0],, [ .machinemode push .machinemode pop .machine push .machine pop],, [AC_DEFINE(HAVE_AS_MACHINE_MACHINEMODE, 1, [Define if your assembler supports .machine and .machinemode.])]) gcc_GAS_CHECK_FEATURE([architecture modifiers support], gcc_cv_as_s390_architecture_modifiers, [2,26,0],, [ .machine z13+vx ],, [AC_DEFINE(HAVE_AS_ARCHITECTURE_MODIFIERS, 1, [Define if your assembler supports architecture modifiers.])]) ;; esac # Mips and HP-UX need the GNU assembler. # Linux on IA64 might be able to use the Intel assembler. case "$target" in mips*-*-* | *-*-hpux* ) if test x$gas_flag = xyes \ || test x"$host" != x"$build" \ || test ! -x "$gcc_cv_as" \ || "$gcc_cv_as" -v < /dev/null 2>&1 | grep GNU > /dev/null; then : else echo "*** This configuration requires the GNU assembler" >&2 exit 1 fi ;; esac # ??? Not all targets support dwarf2 debug_line, even within a version # of gas. Moreover, we need to emit a valid instruction to trigger any # info to the output file. So, as supported targets are added to gas 2.11, # add some instruction here to (also) show we expect this might work. # ??? Once 2.11 is released, probably need to add first known working # version to the per-target configury. case "$cpu_type" in aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \ | mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \ | visium | xstormy16 | xtensa) insn="nop" ;; ia64 | s390) insn="nop 0" ;; mmix) insn="swym 0" ;; esac if test x"$insn" != x; then conftest_s="\ .file 1 \"conftest.s\" .loc 1 3 0 $insn" gcc_GAS_CHECK_FEATURE([dwarf2 debug_line support], gcc_cv_as_dwarf2_debug_line, [elf,2,11,0],, [$conftest_s], [if test x$gcc_cv_objdump != x \ && $gcc_cv_objdump -h conftest.o 2> /dev/null \ | grep debug_line > /dev/null 2>&1; then gcc_cv_as_dwarf2_debug_line=yes fi]) # The .debug_line file table must be in the exact order that # we specified the files, since these indices are also used # by DW_AT_decl_file. Approximate this test by testing if # the assembler bitches if the same index is assigned twice. gcc_GAS_CHECK_FEATURE([buggy dwarf2 .file directive], gcc_cv_as_dwarf2_file_buggy,,, [ .file 1 "foo.s" .file 1 "bar.s"]) if test $gcc_cv_as_dwarf2_debug_line = yes \ && test $gcc_cv_as_dwarf2_file_buggy = no; then AC_DEFINE(HAVE_AS_DWARF2_DEBUG_LINE, 1, [Define if your assembler supports dwarf2 .file/.loc directives, and preserves file table indices exactly as given.]) fi gcc_GAS_CHECK_FEATURE([--gdwarf2 option], gcc_cv_as_gdwarf2_flag, [elf,2,11,0], [--gdwarf2], [$insn],, [AC_DEFINE(HAVE_AS_GDWARF2_DEBUG_FLAG, 1, [Define if your assembler supports the --gdwarf2 option.])]) gcc_GAS_CHECK_FEATURE([--gstabs option], gcc_cv_as_gstabs_flag, [elf,2,11,0], [--gstabs], [$insn],, [AC_DEFINE(HAVE_AS_GSTABS_DEBUG_FLAG, 1, [Define if your assembler supports the --gstabs option.])]) gcc_GAS_CHECK_FEATURE([--debug-prefix-map option], gcc_cv_as_debug_prefix_map_flag, [2,18,0], [--debug-prefix-map /a=/b], [$insn],, [AC_DEFINE(HAVE_AS_DEBUG_PREFIX_MAP, 1, [Define if your assembler supports the --debug-prefix-map option.])]) fi gcc_GAS_CHECK_FEATURE([compressed debug sections], gcc_cv_as_compress_debug,,,, [# gas compiled without zlib cannot compress debug sections and warns # about it, but still exits successfully. So check for this, too. if $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s 2>&1 | grep -i warning > /dev/null then gcc_cv_as_compress_debug=0 # Since binutils 2.26, gas supports --compress-debug-sections=type, # defaulting to the ELF gABI format. elif $gcc_cv_as --compress-debug-sections=zlib-gnu -o conftest.o conftest.s > /dev/null 2>&1 then gcc_cv_as_compress_debug=2 gcc_cv_as_compress_debug_option="--compress-debug-sections" gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" # Before binutils 2.26, gas only supported --compress-debug-options and # emitted the traditional GNU format. elif $gcc_cv_as --compress-debug-sections -o conftest.o conftest.s > /dev/null 2>&1 then gcc_cv_as_compress_debug=1 gcc_cv_as_compress_debug_option="--compress-debug-sections" gcc_cv_as_no_compress_debug_option="--nocompress-debug-sections" else gcc_cv_as_compress_debug=0 fi]) AC_DEFINE_UNQUOTED(HAVE_AS_COMPRESS_DEBUG, $gcc_cv_as_compress_debug, [Define to the level of your assembler's compressed debug section support.]) AC_DEFINE_UNQUOTED(AS_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_compress_debug_option", [Define to the assembler option to enable compressed debug sections.]) AC_DEFINE_UNQUOTED(AS_NO_COMPRESS_DEBUG_OPTION, "$gcc_cv_as_no_compress_debug_option", [Define to the assembler option to disable compressed debug sections.]) gcc_GAS_CHECK_FEATURE([.lcomm with alignment], gcc_cv_as_lcomm_with_alignment, ,, [.lcomm bar,4,16],, [AC_DEFINE(HAVE_GAS_LCOMM_WITH_ALIGNMENT, 1, [Define if your assembler supports .lcomm with an alignment field.])]) if test x$with_sysroot = x && test x$host = x$target \ && test "$prefix" != "/usr" && test "x$prefix" != "x$local_prefix" \ && test "$prefix" != "NONE"; then AC_DEFINE_UNQUOTED(PREFIX_INCLUDE_DIR, "$prefix/include", [Define to PREFIX/include if cpp should also search that directory.]) fi # Determine the version of glibc, if any, used on the target. AC_MSG_CHECKING([for target glibc version]) AC_ARG_WITH([glibc-version], [AS_HELP_STRING([--with-glibc-version=M.N], [assume GCC used with glibc version M.N or later])], [ if [echo "$with_glibc_version" | grep '^[0-9][0-9]*\.[0-9][0-9]*$']; then glibc_version_major=`echo "$with_glibc_version" | sed -e 's/\..*//'` glibc_version_minor=`echo "$with_glibc_version" | sed -e 's/.*\.//'` else AC_MSG_ERROR([option --with-glibc-version requires a version number M.N]) fi], [ glibc_version_major=0 glibc_version_minor=0 [if test -f $target_header_dir/features.h \ && glibc_version_major_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC__[ ]+[0-9]' $target_header_dir/features.h` \ && glibc_version_minor_define=`$EGREP '^[ ]*#[ ]*define[ ]+__GLIBC_MINOR__[ ]+[0-9]' $target_header_dir/features.h`; then glibc_version_major=`echo "$glibc_version_major_define" | sed -e 's/.*__GLIBC__[ ]*//'` glibc_version_minor=`echo "$glibc_version_minor_define" | sed -e 's/.*__GLIBC_MINOR__[ ]*//'` fi]]) AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor]) AC_DEFINE_UNQUOTED([TARGET_GLIBC_MAJOR], [$glibc_version_major], [GNU C Library major version number used on the target, or 0.]) AC_DEFINE_UNQUOTED([TARGET_GLIBC_MINOR], [$glibc_version_minor], [GNU C Library minor version number used on the target, or 0.]) AC_ARG_ENABLE(gnu-unique-object, [AS_HELP_STRING([--enable-gnu-unique-object], [enable the use of the @gnu_unique_object ELF extension on glibc systems])], [case $enable_gnu_unique_object in yes | no) ;; *) AC_MSG_ERROR(['$enable_gnu_unique_object' is an invalid value for --enable-gnu-unique-object. Valid choices are 'yes' and 'no'.]) ;; esac], [gcc_GAS_CHECK_FEATURE([gnu_unique_object], gcc_cv_as_gnu_unique_object, [elf,2,19,52],, [.type foo, '$target_type_format_char'gnu_unique_object],, # We need to unquote above to to use the definition from config.gcc. # Also check for ld.so support, i.e. glibc 2.11 or higher. [GCC_GLIBC_VERSION_GTE_IFELSE([2], [11], [enable_gnu_unique_object=yes], )] )]) if test x$enable_gnu_unique_object = xyes; then AC_DEFINE(HAVE_GAS_GNU_UNIQUE_OBJECT, 1, [Define if your assembler supports @gnu_unique_object.]) fi AC_CACHE_CHECK([assembler for tolerance to line number 0], [gcc_cv_as_line_zero], [gcc_cv_as_line_zero=no if test $in_tree_gas = yes; then gcc_GAS_VERSION_GTE_IFELSE(2, 16, 91, [gcc_cv_as_line_zero=yes]) elif test "x$gcc_cv_as" != x; then { echo '# 1 "test.s" 1'; echo '# 0 "" 2'; } > conftest.s if AC_TRY_COMMAND([$gcc_cv_as -o conftest.o conftest.s >&AS_MESSAGE_LOG_FD 2>conftest.out]) && test "x`cat conftest.out`" = x then gcc_cv_as_line_zero=yes else echo "configure: failed program was" >&AS_MESSAGE_LOG_FD cat conftest.s >&AS_MESSAGE_LOG_FD echo "configure: error output was" >&AS_MESSAGE_LOG_FD cat conftest.out >&AS_MESSAGE_LOG_FD fi rm -f conftest.o conftest.s conftest.out fi]) if test "x$gcc_cv_as_line_zero" = xyes; then AC_DEFINE([HAVE_AS_LINE_ZERO], 1, [Define if the assembler won't complain about a line such as # 0 "" 2.]) fi AC_MSG_CHECKING(support for thin archives) thin_archive_support=no echo 'int main (void) { return 0; }' > conftest.c if ($AR --version | sed 1q | grep "GNU ar" \ && $CC $CFLAGS -c conftest.c \ && $AR rcT conftest.a conftest.o \ && $CC $CFLAGS $LDFLAGS -o conftest conftest.a) >/dev/null 2>&1; then thin_archive_support=yes fi rm -f conftest.c conftest.o conftest.a conftest AC_MSG_RESULT($thin_archive_support) AC_SUBST(thin_archive_support) AC_MSG_CHECKING(linker PT_GNU_EH_FRAME support) gcc_cv_ld_eh_frame_hdr=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 12 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_eh_frame_hdr=yes fi elif test x$gcc_cv_ld != x; then if echo "$ld_ver" | grep GNU > /dev/null; then # Check if linker supports --eh-frame-hdr option if $gcc_cv_ld --help 2>/dev/null | grep eh-frame-hdr > /dev/null; then gcc_cv_ld_eh_frame_hdr=yes fi else case "$target" in *-*-solaris2*) # Sun ld has various bugs in .eh_frame_hdr support before version 1.2251. if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2251; then gcc_cv_ld_eh_frame_hdr=yes fi ;; esac fi fi GCC_TARGET_TEMPLATE([HAVE_LD_EH_FRAME_HDR]) if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then AC_DEFINE(HAVE_LD_EH_FRAME_HDR, 1, [Define if your linker supports .eh_frame_hdr.]) fi AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr) AC_MSG_CHECKING(linker CIEv3 in .eh_frame support) gcc_cv_ld_eh_frame_ciev3=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_eh_frame_ciev3=yes fi elif test x$gcc_cv_ld != x; then if echo "$ld_ver" | grep GNU > /dev/null; then gcc_cv_ld_eh_frame_ciev3=yes if test 0"$ld_date" -lt 20040513; then if test -n "$ld_date"; then # If there was date string, but was earlier than 2004-05-13, fail gcc_cv_ld_eh_frame_ciev3=no elif test "$ld_vers_major" -lt 2; then gcc_cv_ld_eh_frame_ciev3=no elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 16; then gcc_cv_ld_eh_frame_ciev3=no fi fi else case "$target" in *-*-solaris2*) # Sun ld added support for CIE v3 in .eh_frame in Solaris 11.1. if test "$ld_vers_major" -gt 1 || test "$ld_vers_minor" -ge 2324; then gcc_cv_ld_eh_frame_ciev3=yes fi ;; esac fi fi AC_DEFINE_UNQUOTED(HAVE_LD_EH_FRAME_CIEV3, [`if test x"$gcc_cv_ld_eh_frame_ciev3" = xyes; then echo 1; else echo 0; fi`], [Define 0/1 if your linker supports CIE v3 in .eh_frame.]) AC_MSG_RESULT($gcc_cv_ld_eh_frame_ciev3) AC_MSG_CHECKING(linker position independent executable support) gcc_cv_ld_pie=no if test $in_tree_ld = yes ; then case "$target" in # Full PIE support on Solaris was only introduced in gld 2.26. *-*-solaris2*) gcc_gld_pie_min_version=26 ;; *) gcc_gld_pie_min_version=15 ;; esac if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge "$gcc_gld_pie_min_version" -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_pie=yes fi elif test x$gcc_cv_ld != x; then # Check if linker supports -pie option if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then gcc_cv_ld_pie=yes case "$target" in *-*-solaris2*) if echo "$ld_ver" | grep GNU > /dev/null \ && test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then gcc_cv_ld_pie=no fi ;; esac else case "$target" in *-*-solaris2.1[[1-9]]*) # Solaris 11.x and Solaris 12 added PIE support. if $gcc_cv_ld -z help 2>&1 | grep -- type.*pie > /dev/null; then gcc_cv_ld_pie=yes fi ;; esac fi fi if test x"$gcc_cv_ld_pie" = xyes; then AC_DEFINE(HAVE_LD_PIE, 1, [Define if your linker supports PIE option.]) fi AC_MSG_RESULT($gcc_cv_ld_pie) AC_MSG_CHECKING(linker PIE support with copy reloc) gcc_cv_ld_pie_copyreloc=no if test $gcc_cv_ld_pie = yes ; then if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 25 -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_pie_copyreloc=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then # Check if linker supports -pie option with copy reloc case "$target" in i?86-*-linux* | x86_64-*-linux*) cat > conftest1.s < conftest2.s < /dev/null 2>&1 \ && $gcc_cv_ld -shared -melf_x86_64 -o conftest1.so conftest1.o > /dev/null 2>&1 \ && $gcc_cv_as --64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ && $gcc_cv_ld -pie -melf_x86_64 -o conftest conftest2.o conftest1.so > /dev/null 2>&1; then gcc_cv_ld_pie_copyreloc=yes fi rm -f conftest conftest1.so conftest1.o conftest2.o conftest1.s conftest2.s ;; esac fi fi AC_DEFINE_UNQUOTED(HAVE_LD_PIE_COPYRELOC, [`if test x"$gcc_cv_ld_pie_copyreloc" = xyes; then echo 1; else echo 0; fi`], [Define 0/1 if your linker supports -pie option with copy reloc.]) AC_MSG_RESULT($gcc_cv_ld_pie_copyreloc) AC_MSG_CHECKING(linker EH-compatible garbage collection of sections) gcc_cv_ld_eh_gc_sections=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 17 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_eh_gc_sections=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x ; then cat > conftest.s < /dev/null 2>&1; then if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ | grep "gc-sections option ignored" > /dev/null; then gcc_cv_ld_eh_gc_sections=no elif $gcc_cv_objdump -h conftest 2> /dev/null \ | grep gcc_except_table > /dev/null; then gcc_cv_ld_eh_gc_sections=yes # If no COMDAT groups, the compiler will emit .gnu.linkonce.t. sections. if test x$gcc_cv_as_comdat_group != xyes; then gcc_cv_ld_eh_gc_sections=no cat > conftest.s < /dev/null 2>&1; then if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ | grep "gc-sections option ignored" > /dev/null; then gcc_cv_ld_eh_gc_sections=no elif $gcc_cv_objdump -h conftest 2> /dev/null \ | grep gcc_except_table > /dev/null; then gcc_cv_ld_eh_gc_sections=yes fi fi fi fi fi rm -f conftest.s conftest.o conftest fi case "$target" in hppa*-*-linux*) # ??? This apparently exposes a binutils bug with PC-relative relocations. gcc_cv_ld_eh_gc_sections=no ;; esac if test x$gcc_cv_ld_eh_gc_sections = xyes; then AC_DEFINE(HAVE_LD_EH_GC_SECTIONS, 1, [Define if your linker supports garbage collection of sections in presence of EH frames.]) fi AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections) AC_MSG_CHECKING(linker EH garbage collection of sections bug) gcc_cv_ld_eh_gc_sections_bug=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -lt 19 -o "$gcc_cv_gld_major_version" -lt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_eh_gc_sections_bug=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_objdump != x -a x$gcc_cv_as_comdat_group = xyes; then gcc_cv_ld_eh_gc_sections_bug=yes cat > conftest.s < /dev/null 2>&1; then if $gcc_cv_ld -o conftest conftest.o --entry=_start --gc-sections 2>&1 \ | grep "gc-sections option ignored" > /dev/null; then : elif $gcc_cv_objdump -h conftest 2> /dev/null \ | grep gcc_except_table > /dev/null; then gcc_cv_ld_eh_gc_sections_bug=no fi fi rm -f conftest.s conftest.o conftest fi if test x$gcc_cv_ld_eh_gc_sections_bug = xyes; then AC_DEFINE(HAVE_LD_EH_GC_SECTIONS_BUG, 1, [Define if your linker has buggy garbage collection of sections support when .text.startup.foo like sections are used.]) fi AC_MSG_RESULT($gcc_cv_ld_eh_gc_sections_bug) AC_MSG_CHECKING(linker for compressed debug sections) # gold/gld support compressed debug sections since binutils 2.19/2.21 # In binutils 2.26, gld gained support for the ELF gABI format. if test $in_tree_ld = yes ; then gcc_cv_ld_compress_debug=0 if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 19 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes && test $ld_is_gold = yes; then gcc_cv_ld_compress_debug=2 gcc_cv_ld_compress_debug_option="--compress-debug-sections" elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 26 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes && test $ld_is_gold = no; then gcc_cv_ld_compress_debug=3 gcc_cv_ld_compress_debug_option="--compress-debug-sections" elif test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_compress_debug=1 fi elif echo "$ld_ver" | grep GNU > /dev/null; then if test "$ld_vers_major" -lt 2 \ || test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 21; then gcc_cv_ld_compress_debug=0 elif test "$ld_vers_major" -eq 2 -a "$ld_vers_minor" -lt 26; then gcc_cv_ld_compress_debug=1 else gcc_cv_ld_compress_debug=3 gcc_cv_ld_compress_debug_option="--compress-debug-sections" fi if test $ld_is_gold = yes; then gcc_cv_ld_compress_debug=2 gcc_cv_ld_compress_debug_option="--compress-debug-sections" fi else changequote(,)dnl case "${target}" in *-*-solaris2*) # Introduced in Solaris 11.2. if $gcc_cv_ld --help 2>&1 | grep -- '-z compress-sections' > /dev/null; then gcc_cv_ld_compress_debug=3 gcc_cv_ld_compress_debug_option="-z compress-sections" else gcc_cv_ld_compress_debug=0 fi ;; *) # Assume linkers other than GNU ld don't support compessed debug # sections. gcc_cv_ld_compress_debug=0 ;; esac changequote([,])dnl fi AC_DEFINE_UNQUOTED(HAVE_LD_COMPRESS_DEBUG, $gcc_cv_ld_compress_debug, [Define to the level of your linker's compressed debug section support.]) AC_DEFINE_UNQUOTED(LD_COMPRESS_DEBUG_OPTION, "$gcc_cv_ld_compress_debug_option", [Define to the linker option to enable compressed debug sections.]) AC_MSG_RESULT($gcc_cv_ld_compress_debug) # -------- # UNSORTED # -------- AC_CACHE_CHECK(linker --as-needed support, gcc_cv_ld_as_needed, [gcc_cv_ld_as_needed=no gcc_cv_ld_as_needed_option='--as-needed' gcc_cv_ld_no_as_needed_option='--no-as-needed' if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_as_needed=yes fi elif test x$gcc_cv_ld != x; then # Check if linker supports --as-needed and --no-as-needed options if $gcc_cv_ld --help 2>/dev/null | grep as-needed > /dev/null; then gcc_cv_ld_as_needed=yes else case "$target" in # Solaris 2 ld always supports -z ignore/-z record. *-*-solaris2*) gcc_cv_ld_as_needed=yes gcc_cv_ld_as_needed_option="-z ignore" gcc_cv_ld_no_as_needed_option="-z record" ;; esac fi fi # --as-needed/-z ignore can only be used if libgcc_s.so.1 uses # dl_iterate_phdr, i.e. since Solaris 11. case "$target" in *-*-solaris2.1[[1-9]]*) case "$target" in i?86-*-* | x86_64-*-*) if echo "$ld_ver" | grep GNU > /dev/null; then # Doesn't work with gld on Solaris/x86 due to PR ld/12320. gcc_cv_ld_as_needed=no fi ;; esac ;; *-*-solaris2*) gcc_cv_ld_as_needed=no ;; esac ]) if test x"$gcc_cv_ld_as_needed" = xyes; then AC_DEFINE(HAVE_LD_AS_NEEDED, 1, [Define if your linker supports --as-needed/--no-as-needed or equivalent options.]) AC_DEFINE_UNQUOTED(LD_AS_NEEDED_OPTION, "$gcc_cv_ld_as_needed_option", [Define to the linker option to ignore unused dependencies.]) AC_DEFINE_UNQUOTED(LD_NO_AS_NEEDED_OPTION, "$gcc_cv_ld_no_as_needed_option", [Define to the linker option to keep unused dependencies.]) fi AC_MSG_CHECKING(linker mapfile support for clearing hardware capabilities) saved_LDFLAGS="$LDFLAGS" for clearcap_map in sol2-clearcapv2.map sol2-clearcap.map; do LDFLAGS="$saved_LDFLAGS -Wl,-M,${srcdir}/config/$clearcap_map" AC_LINK_IFELSE([int main(void) {return 0;}], [gcc_cv_ld_clearcap=yes; break], [gcc_cv_ld_clearcap=no]) done LDFLAGS="$saved_LDFLAGS" if test "x$gcc_cv_ld_clearcap" = xyes; then AC_DEFINE([HAVE_LD_CLEARCAP], 1, [Define if the linker supports clearing hardware capabilities via mapfile.]) AC_CONFIG_LINKS([clearcap.map:${srcdir}/config/$clearcap_map]) fi AC_MSG_RESULT($gcc_cv_ld_clearcap) case "$target" in powerpc*-*-*) case "$target" in *le-*-linux*) emul_name="-melf32lppc" ;; *) emul_name="-melf32ppc" ;; esac AC_CACHE_CHECK(linker .gnu.attributes long double support, gcc_cv_ld_ppc_attr, [gcc_cv_ld_ppc_attr=no if test x"$ld_is_gold" = xyes; then gcc_cv_ld_ppc_attr=yes elif test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 \ -a "$gcc_cv_gld_minor_version" -ge 28 \ -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_ppc_attr=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then # check that merging the long double .gnu_attribute doesn't warn cat > conftest1.s < conftest2.s < /dev/null 2>&1 \ && $gcc_cv_as -a32 -o conftest2.o conftest2.s > /dev/null 2>&1 \ && $gcc_cv_ld $emul_name -r -o conftest.o conftest1.o conftest2.o > /dev/null 2> conftest.err \ && test ! -s conftest.err; then gcc_cv_ld_ppc_attr=yes fi rm -f conftest.err conftest.o conftest1.o conftest2.o conftest1.s conftest2.s fi ]) if test x$gcc_cv_ld_ppc_attr = xyes; then AC_DEFINE(HAVE_LD_PPC_GNU_ATTR_LONG_DOUBLE, 1, [Define if your PowerPC linker has .gnu.attributes long double support.]) fi ;; esac case "$target:$tm_file" in powerpc64-*-freebsd* | powerpc64*-*-linux* | powerpc*-*-linux*rs6000/biarch64.h*) case "$target" in *le-*-linux*) emul_name="-melf64lppc" ;; *-*-linux*) emul_name="-melf64ppc" ;; *-*-freebsd*) emul_name="-melf64ppc_fbsd" ;; esac AC_CACHE_CHECK(linker support for omitting dot symbols, gcc_cv_ld_no_dot_syms, [gcc_cv_ld_no_dot_syms=no if test x"$ld_is_gold" = xyes; then gcc_cv_ld_no_dot_syms=yes elif test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_no_dot_syms=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then cat > conftest1.s < conftest2.s < /dev/null 2>&1 \ && $gcc_cv_as -a64 -o conftest2.o conftest2.s > /dev/null 2>&1 \ && $gcc_cv_ld $emul_name -o conftest conftest1.o conftest2.o > /dev/null 2>&1; then gcc_cv_ld_no_dot_syms=yes fi rm -f conftest conftest1.o conftest2.o conftest1.s conftest2.s fi ]) if test x"$gcc_cv_ld_no_dot_syms" = xyes; then AC_DEFINE(HAVE_LD_NO_DOT_SYMS, 1, [Define if your PowerPC64 linker only needs function descriptor syms.]) fi AC_CACHE_CHECK(linker large toc support, gcc_cv_ld_large_toc, [gcc_cv_ld_large_toc=no if test x"$ld_is_gold" = xyes; then gcc_cv_ld_large_toc=yes elif test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 21 -o "$gcc_cv_gld_major_version" -gt 2; then gcc_cv_ld_large_toc=yes fi elif test x$gcc_cv_as != x -a x$gcc_cv_ld != x ; then cat > conftest.s < /dev/null 2>&1 \ && $gcc_cv_ld $emul_name --no-toc-sort -o conftest conftest.o > /dev/null 2>&1; then gcc_cv_ld_large_toc=yes fi rm -f conftest conftest.o conftest.s fi ]) if test x"$gcc_cv_ld_large_toc" = xyes; then AC_DEFINE(HAVE_LD_LARGE_TOC, 1, [Define if your PowerPC64 linker supports a large TOC.]) fi AC_CACHE_CHECK(linker toc pointer alignment, gcc_cv_ld_toc_align, [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then cat > conftest.s < /dev/null 2>&1 \ && $gcc_cv_ld $emul_name -z norelro -o conftest conftest.o > /dev/null 2>&1; then gcc_cv_ld_toc_align=`$gcc_cv_nm conftest | ${AWK} '/\.TOC\./ { match ($0, "0[[[:xdigit:]]]*", a); print strtonum ("0x" substr(a[[0]], length(a[[0]])-3)) }'` fi rm -f conftest conftest.o conftest.s fi ]) if test -n "$gcc_cv_ld_toc_align" && test $gcc_cv_ld_toc_align -gt 8; then AC_DEFINE_UNQUOTED(POWERPC64_TOC_POINTER_ALIGNMENT, $gcc_cv_ld_toc_align, [Define to .TOC. alignment forced by your linker.]) fi ;; esac case "$target" in *-*-aix*) AC_CACHE_CHECK(linker large toc support, gcc_cv_ld_large_toc, [gcc_cv_ld_large_toc=no if test x$gcc_cv_as != x ; then cat > conftest.s < /dev/null 2>&1; then gcc_cv_ld_large_toc=yes fi rm -f conftest conftest.o conftest.s fi ]) if test x"$gcc_cv_ld_large_toc" = xyes; then AC_DEFINE(HAVE_LD_LARGE_TOC, 1, [Define if your PowerPC64 linker supports a large TOC.]) fi ;; esac AC_CACHE_CHECK(linker --build-id support, gcc_cv_ld_buildid, [gcc_cv_ld_buildid=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a \ "$gcc_cv_gld_minor_version" -ge 18 -o \ "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_buildid=yes fi elif test x$gcc_cv_ld != x; then if $gcc_cv_ld --help 2>/dev/null | grep build-id > /dev/null; then gcc_cv_ld_buildid=yes fi fi]) if test x"$gcc_cv_ld_buildid" = xyes; then AC_DEFINE(HAVE_LD_BUILDID, 1, [Define if your linker supports --build-id.]) fi AC_ARG_ENABLE(linker-build-id, [AS_HELP_STRING([--enable-linker-build-id], [compiler will always pass --build-id to linker])], [], enable_linker_build_id=no) if test x"$enable_linker_build_id" = xyes; then if test x"$gcc_cv_ld_buildid" = xyes; then AC_DEFINE(ENABLE_LD_BUILDID, 1, [Define if gcc should always pass --build-id to linker.]) else AC_MSG_WARN(--build-id is not supported by your linker; --enable-linker-build-id ignored) fi fi # In binutils 2.21, GNU ld gained support for new emulations fully # supporting the Solaris 2 ABI. Detect their presence in the linker used. AC_CACHE_CHECK(linker *_sol2 emulation support, gcc_cv_ld_sol2_emulation, [gcc_cv_ld_sol2_emulation=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a \ "$gcc_cv_gld_minor_version" -ge 21 -o \ "$gcc_cv_gld_major_version" -gt 2 \ && test $in_tree_ld_is_elf = yes; then gcc_cv_ld_sol2_emulation=yes fi elif test x$gcc_cv_ld != x; then if $gcc_cv_ld -V 2>/dev/null | sed -e '1,/Supported emulations/d;q' | \ grep _sol2 > /dev/null; then gcc_cv_ld_sol2_emulation=yes fi fi]) if test x"$gcc_cv_ld_sol2_emulation" = xyes; then AC_DEFINE(HAVE_LD_SOL2_EMULATION, 1, [Define if your linker supports the *_sol2 emulations.]) fi AC_CACHE_CHECK(linker --sysroot support, gcc_cv_ld_sysroot, [gcc_cv_ld_sysroot=no if test $in_tree_ld = yes ; then if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 16 -o "$gcc_cv_gld_major_version" -gt 2 ; then gcc_cv_ld_sysroot=yes fi elif test x$gcc_cv_ld != x; then if $gcc_cv_ld --help 2>/dev/null | grep sysroot > /dev/null; then gcc_cv_ld_sysroot=yes fi fi]) if test x"$gcc_cv_ld_sysroot" = xyes; then AC_DEFINE(HAVE_LD_SYSROOT, 1, [Define if your linker supports --sysroot.]) fi case $target in *-*-solaris2*) # Check for system-provided CRTs on Solaris 11.x and Solaris 12. AC_CACHE_CHECK([system-provided CRTs on Solaris], gcc_cv_solaris_crts, [gcc_cv_solaris_crts=no if test x$host != x$target; then if test "x$with_sysroot" = xyes; then target_sysroot="${test_exec_prefix}/${target_noncanonical}/sys-root" else target_sysroot="${with_sysroot}" fi fi target_libdir="$target_sysroot/usr/lib" # At the time they were added, gcrt1.o became a symlink for backwards # compatibility on x86, while crt1.o was added on sparc, so check for that. case $target in i?86-*-solaris2* | x86_64-*-solaris2*) if test -h "$target_libdir/gcrt1.o"; then gcc_cv_solaris_crts=yes; fi ;; sparc*-*-solaris2*) if test -f "$target_libdir/crt1.o"; then gcc_cv_solaris_crts=yes; fi ;; esac]) ;; esac if test x$gcc_cv_solaris_crts = xyes; then AC_DEFINE(HAVE_SOLARIS_CRTS, 1, [Define if the system-provided CRTs are present on Solaris.]) fi # Test for stack protector support in target C library. AC_CACHE_CHECK(__stack_chk_fail in target C library, gcc_cv_libc_provides_ssp, [gcc_cv_libc_provides_ssp=no case "$target" in *-*-musl*) # All versions of musl provide stack protector gcc_cv_libc_provides_ssp=yes;; *-*-linux* | *-*-kfreebsd*-gnu) # glibc 2.4 and later provides __stack_chk_fail and # either __stack_chk_guard, or TLS access to stack guard canary. GCC_GLIBC_VERSION_GTE_IFELSE([2], [4], [gcc_cv_libc_provides_ssp=yes], [ [if test -f $target_header_dir/features.h \ && $EGREP '^[ ]*#[ ]*define[ ]+__GNU_LIBRARY__[ ]+([1-9][0-9]|[6-9])' \ $target_header_dir/features.h > /dev/null; then if $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC__[ ]+1' \ $target_header_dir/features.h > /dev/null && \ test -f $target_header_dir/bits/uClibc_config.h && \ $EGREP '^[ ]*#[ ]*define[ ]+__UCLIBC_HAS_SSP__[ ]+1' \ $target_header_dir/bits/uClibc_config.h > /dev/null; then gcc_cv_libc_provides_ssp=yes fi # all versions of Bionic support stack protector elif test -f $target_header_dir/sys/cdefs.h \ && $EGREP '^[ ]*#[ ]*define[ ]+__BIONIC__[ ]+1' \ $target_header_dir/sys/cdefs.h > /dev/null; then gcc_cv_libc_provides_ssp=yes fi]]) ;; *-*-gnu*) # Avoid complicated tests (see # ) and for now # simply assert that glibc does provide this, which is true for all # realistically usable GNU/Hurd configurations. # All supported versions of musl provide it as well gcc_cv_libc_provides_ssp=yes;; *-*-darwin* | *-*-freebsd* | *-*-netbsd*) AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes], [echo "no __stack_chk_fail on this target"]) ;; *) gcc_cv_libc_provides_ssp=no ;; esac]) if test x$gcc_cv_libc_provides_ssp = xyes; then AC_DEFINE(TARGET_LIBC_PROVIDES_SSP, 1, [Define if your target C library provides stack protector support]) fi # Check whether --enable-default-ssp was given. AC_ARG_ENABLE(default-ssp, [AS_HELP_STRING([--enable-default-ssp], [enable Stack Smashing Protection as default])],[ if test x$gcc_cv_libc_provides_ssp = xyes; then case "$target" in ia64*-*-*) enable_default_ssp=no ;; *) enable_default_ssp=$enableval ;; esac else enable_default_ssp=no fi], enable_default_ssp=no) if test x$enable_default_ssp = xyes ; then AC_DEFINE(ENABLE_DEFAULT_SSP, 1, [Define if your target supports default stack protector and it is enabled.]) fi AC_SUBST([enable_default_ssp]) # Test for on the target. 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