# configure.ac for GCC
# Process this file with autoconf to generate a configuration script.
-# Copyright (C) 1997-2014 Free Software Foundation, Inc.
+# Copyright (C) 1997-2015 Free Software Foundation, Inc.
#This file is part of GCC.
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
fi
# check what underlying integer type int64_t uses
-AC_LANG_PUSH(C++)
AC_CACHE_CHECK(for int64_t underlying type, ac_cv_int64_t_type, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef HAVE_STDINT_H
struct X<long long> { typedef long long t; };
]], [[X<int64_t>::t x;]])],[],[AC_MSG_ERROR([error verifying int64_t uses long long])])
fi
-AC_LANG_POP(C++)
[],[enable_build_format_warnings=yes])
AS_IF([test $enable_build_format_warnings = no],
[wf_opt=-Wno-format],[wf_opt=])
-ACX_PROG_CC_WARNING_OPTS(
+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_CC_WARNING_OPTS(
+ACX_PROG_CXX_WARNING_OPTS(
m4_quote(m4_do([-Wmissing-format-attribute])), [strict_warn])
-ACX_PROG_CC_WARNING_OPTS(
+ACX_PROG_CXX_WARNING_OPTS(
m4_quote(m4_do([-Woverloaded-virtual])), [strict_warn])
ACX_PROG_CC_WARNING_OPTS(
m4_quote(m4_do([-Wold-style-definition -Wc++-compat])), [c_strict_warn])
-ACX_PROG_CC_WARNING_ALMOST_PEDANTIC(
+ACX_PROG_CXX_WARNING_ALMOST_PEDANTIC(
m4_quote(m4_do([-Wno-long-long -Wno-variadic-macros ],
[-Wno-overlength-strings])), [strict_warn])
-ACX_PROG_CC_WARNINGS_ARE_ERRORS([manual], [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
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 unistd.h sys/file.h sys/time.h sys/mman.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)
AC_PROG_CXXCPP
m4_popdef([AC_MSG_ERROR])[]dnl
-AC_LANG_PUSH(C++)
-
AC_CHECK_HEADERS(unordered_map)
AC_CHECK_HEADERS(tr1/unordered_map)
AC_CHECK_HEADERS(ext/hash_map)
-AC_LANG_POP(C++)
-
# --------
# Dependency checking.
# --------
-AC_LANG_PUSH(C++)
ZW_CREATE_DEPDIR
AC_CONFIG_COMMANDS([gccdepdir],[
${CONFIG_SHELL-/bin/sh} $ac_aux_dir/mkinstalldirs build/$DEPDIR
done], [subdirs="$subdirs" ac_aux_dir=$ac_aux_dir DEPDIR=$DEPDIR])
ZW_PROG_COMPILER_DEPENDENCIES([CXX])
-AC_LANG_POP(C++)
# --------
# UNSORTED
fileno_unlocked fprintf_unlocked fputc_unlocked fputs_unlocked dnl
fread_unlocked fwrite_unlocked getchar_unlocked getc_unlocked dnl
putchar_unlocked putc_unlocked)
-AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoll atoq \
+AC_CHECK_FUNCS(times clock kill getrlimit setrlimit atoq \
popen sysconf strsignal getrusage nl_langinfo \
gettimeofday mbstowcs wcswidth mmap setlocale \
gcc_UNLOCKED_FUNCS madvise)
esac
AC_FUNC_FORK
-# g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which exposes a different
-# iconv() prototype.
-AC_LANG_PUSH([C++])
AM_ICONV
-AC_LANG_POP([C++])
# Until we have in-tree GNU iconv:
LIBICONV_DEP=
CFLAGS="$CFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
saved_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -I${srcdir} -I${srcdir}/../include $GMPINC"
-gcc_AC_CHECK_DECLS(getenv atol asprintf sbrk abort atof getcwd getwd \
- stpcpy strnlen strsignal strstr strverscmp \
+
+# 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 \
errno snprintf vsnprintf vasprintf malloc realloc calloc \
- free basename getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
+ free getopt clock getpagesize ffs gcc_UNLOCKED_FUNCS, , ,[
#include "ansidecl.h"
#include "system.h"])
#include <signal.h>
])
-# g++ on Solaris 10+ defines _XOPEN_SOURCE=600, which hides the madvise()
-# prototype.
-AC_LANG_PUSH([C++])
-gcc_AC_CHECK_DECLS(madvise, , ,[
- #include "ansidecl.h"
- #include "system.h"
-])
-AC_LANG_POP([C++])
-
# More time-related stuff.
AC_CACHE_CHECK(for struct tms, ac_cv_struct_tms, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
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(['$enableval' is an invalid value for --enable-fix-cortex-a53-843419.\
+ Valid choices are 'yes' and 'no'.])
+ ;;
+
+ esac
+ ],
+ [])
;;
# All TARGET_ABI_OSF targets.
[Define if your assembler supports the lituse_jsrdirect relocation.])])
;;
+ avr-*-*)
+ gcc_GAS_CHECK_FEATURE([--mlink-relax option], gcc_cv_as_avr_mlink_relax,,
+ [--mlink-relax], [.text],,
+ [AC_DEFINE(HAVE_AS_AVR_MLINK_RELAX_OPTION, 1,
+ [Define if your avr assembler supports --mlink-relax option.])])
+
+ gcc_GAS_CHECK_FEATURE([-mrmw option], gcc_cv_as_avr_mrmw,,
+ [-mrmw], [.text],,
+ [AC_DEFINE(HAVE_AS_AVR_MRMW_OPTION, 1,
+ [Define if your avr assembler supports -mrmw option.])])
+ ;;
+
cris-*-*)
gcc_GAS_CHECK_FEATURE([-no-mul-bug-abort option],
gcc_cv_as_cris_no_mul_bug,[2,15,91],
gcc_GAS_CHECK_FEATURE([filds and fists mnemonics],
gcc_cv_as_ix86_filds,,,
- [filds mem; fists mem],,
+ [filds (%ebp); fists (%ebp)],,
[AC_DEFINE(HAVE_AS_IX86_FILDS, 1,
[Define if your assembler uses filds and fists mnemonics.])])
gcc_GAS_CHECK_FEATURE([fildq and fistpq mnemonics],
gcc_cv_as_ix86_fildq,,,
- [fildq mem; fistpq mem],,
+ [fildq (%ebp); fistpq (%ebp)],,
[AC_DEFINE(HAVE_AS_IX86_FILDQ, 1,
[Define if your assembler uses fildq and fistq mnemonics.])])
[Define if your assembler supports .gnu_attribute.])])
gcc_GAS_CHECK_FEATURE([.module support],
- gcc_cv_as_mips_dot_module,,,
- [.module fp=32],,
+ gcc_cv_as_mips_dot_module,,[-32],
+ [.module mips2
+ .module fp=xx],,
[AC_DEFINE(HAVE_AS_DOT_MODULE, 1,
[Define if your assembler supports .module.])])
if test x$gcc_cv_as_mips_dot_module = xno \
[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.])])
+ ;;
esac
# Mips and HP-UX need the GNU assembler.
case "$cpu_type" in
aarch64 | alpha | arm | avr | bfin | cris | i386 | m32c | m68k | microblaze \
| mips | nios2 | pa | rs6000 | score | sparc | spu | tilegx | tilepro \
- | xstormy16 | xtensa)
+ | visium | xstormy16 | xtensa)
insn="nop"
;;
ia64 | s390)
fi
AC_MSG_RESULT($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 <<EOF
+ .globl a_glob
+ .data
+ .type a_glob, @object
+ .size a_glob, 4
+a_glob:
+ .long 2
+EOF
+ cat > conftest2.s <<EOF
+ .text
+ .globl main
+ .type main, @function
+main:
+ movl %eax, a_glob(%rip)
+ .size main, .-main
+ .globl ptr
+ .section .data.rel,"aw",@progbits
+ .type ptr, @object
+ptr:
+ .quad a_glob
+EOF
+ if $gcc_cv_as --64 -o conftest1.o conftest1.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 $in_tree_ld = yes ; then
AC_DEFINE(HAVE_LD_LARGE_TOC, 1,
[Define if your PowerPC64 linker supports a large TOC.])
fi
+
+ AC_CACHE_CHECK(linker toc pointer alignment,
+ gcc_cv_ld_toc_align,
+ [if test x$gcc_cv_as != x -a x$gcc_cv_ld != x -a x$gcc_cv_nm != x; then
+ cat > conftest.s <<EOF
+ .global _start
+ .text
+_start:
+ addis 9,2,x@got@ha
+ .section .data.rel.ro,"aw",@progbits
+ .p2align 16
+ .space 32768
+x: .quad .TOC.
+EOF
+ if $gcc_cv_as -a64 -o conftest.o conftest.s > /dev/null 2>&1 \
+ && $gcc_cv_ld $emul_name -o conftest conftest.o > /dev/null 2>&1; then
+ gcc_cv_ld_toc_align=`$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, $gcc_cv_ld_toc_align,
+ [Define to .TOC. alignment forced by your linker.])
+ fi
;;
esac
gcc_cv_libc_provides_ssp,
[gcc_cv_libc_provides_ssp=no
case "$target" in
+ *-*-musl*)
+ # All versions of musl provide stack protector
+ gcc_cv_libc_provides_ssp=yes;;
*-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
# glibc 2.4 and later provides __stack_chk_fail and
# either __stack_chk_guard, or TLS access to stack guard canary.
# <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) 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*)
AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
gcc_cv_target_dl_iterate_phdr=no
fi
;;
+ *-linux-musl*)
+ gcc_cv_target_dl_iterate_phdr=yes
+ ;;
esac
GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
AC_DEFINE(HAVE_isl, 1, [Define if isl is in use.])
fi
+# Check whether isl_schedule_constraints_compute_schedule is available;
+# it's new in ISL-0.13.
+if test "x${ISLLIBS}" != "x" ; then
+ saved_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS $ISLINC"
+ saved_LIBS="$LIBS"
+ LIBS="$LIBS $ISLLIBS $GMPLIBS"
+
+ AC_MSG_CHECKING([Checking for isl_schedule_constraints_compute_schedule])
+ AC_TRY_LINK([#include <isl/schedule.h>],
+ [isl_schedule_constraints_compute_schedule (NULL);],
+ [ac_has_isl_schedule_constraints_compute_schedule=yes],
+ [ac_has_isl_schedule_constraints_compute_schedule=no])
+ AC_MSG_RESULT($ac_has_isl_schedule_constraints_compute_schedule)
+
+ LIBS="$saved_LIBS"
+ CXXFLAGS="$saved_CXXFLAGS"
+
+ if test x"$ac_has_isl_schedule_constraints_compute_schedule" = x"yes"; then
+ AC_DEFINE(HAVE_ISL_SCHED_CONSTRAINTS_COMPUTE_SCHEDULE, 1,
+ [Define if isl_schedule_constraints_compute_schedule exists.])
+ fi
+fi
+
GCC_ENABLE_PLUGINS
AC_SUBST(pluginlibs)
AC_SUBST(enable_plugin)
#define GCC_DRIVER_NAME "${target_noncanonical}-gcc-${gcc_BASEVER}${exeext}"
EOF
+# Check whether --enable-default-pie was given.
+AC_ARG_ENABLE(default-pie,
+[AS_HELP_STRING([--enable-default-pie],
+ [enable Position Independent Executable as default])],
+enable_default_pie=$enableval,
+enable_default_pie=no)
+if test x$enable_default_pie == xyes ; then
+ AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
+ [Define if your target supports default PIE and it is enabled.])
+fi
+AC_SUBST([enable_default_pie])
+
+# Check if -fno-PIE works.
+AC_CACHE_CHECK([for -fno-PIE option],
+ [gcc_cv_c_no_fpie],
+ [saved_CXXFLAGS="$CXXFLAGS"
+ CXXFLAGS="$CXXFLAGS -fno-PIE"
+ AC_COMPILE_IFELSE([int main(void) {return 0;}],
+ [gcc_cv_c_no_fpie=yes],
+ [gcc_cv_c_no_fpie=no])
+ CXXFLAGS="$saved_CXXFLAGS"])
+if test "$gcc_cv_c_no_fpie" = "yes"; then
+ NO_PIE_CFLAGS="-fno-PIE"
+fi
+AC_SUBST([NO_PIE_CFLAGS])
+
+# Check if -no-pie works.
+AC_CACHE_CHECK([for -no-pie option],
+ [gcc_cv_no_pie],
+ [saved_LDFLAGS="$LDFLAGS"
+ LDFLAGS="$LDFLAGS -no-pie"
+ AC_LINK_IFELSE([int main(void) {return 0;}],
+ [gcc_cv_no_pie=yes],
+ [gcc_cv_no_pie=no])
+ LDFLAGS="$saved_LDFLAGS"])
+if test "$gcc_cv_no_pie" = "yes"; then
+ NO_PIE_FLAG="-no-pie"
+fi
+AC_SUBST([NO_PIE_FLAG])
+
# Configure the subdirectories
# AC_CONFIG_SUBDIRS($subdirs)
projects / gcc.git / blobdiff