sinclude(../config/dfp.m4)
sinclude(../config/unwind_ipinfo.m4)
sinclude(../config/gthr.m4)
+sinclude(../config/sjlj.m4)
AC_PREREQ(2.64)
AC_INIT([GNU C Runtime Library], 1.0,,[libgcc])
AC_SUBST(double_type_size)
AC_SUBST(long_double_type_size)
+AC_CHECK_HEADERS(inttypes.h stdint.h stdlib.h ftw.h \
+ unistd.h sys/stat.h sys/types.h \
+ string.h strings.h memory.h)
+AC_HEADER_STDC
+
# Check for decimal float support.
AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
# config.gcc also contains tests of with_system_libunwind.
GCC_CHECK_UNWIND_GETIPINFO
-# The sjlj test is almost duplicated here and in libgo/configure.ac (for C),
-# libstdc++-v3/acinclude.m4 and libjava/configure.ac (for C++), and
-# libobjc/configure.ac (for Objective-C).
-# FIXME: This should be centralized in config/sjlj.m4.
-AC_ARG_ENABLE(sjlj-exceptions,
- AC_HELP_STRING([--enable-sjlj-exceptions],
- [force use of builtin_setjmp for exceptions]),
- [case "$enableval" in
- yes|no|auto) ;;
- *) AC_MSG_ERROR([unknown argument to --enable-sjlj-exceptions]) ;;
- esac],
- [enable_sjlj_exceptions=auto])
-
-AC_CACHE_CHECK([whether to use setjmp/longjmp exceptions],
-[libgcc_cv_lib_sjlj_exceptions],
-[AC_LANG_CONFTEST(
- [AC_LANG_SOURCE([
-void bar ();
-void clean (int *);
-void foo ()
-{
- int i __attribute__ ((cleanup (clean)));
- bar();
-}
-])])
-CFLAGS_hold=$CFLAGS
-CFLAGS="--save-temps -fexceptions"
-libgcc_cv_lib_sjlj_exceptions=unknown
-AS_IF([ac_fn_c_try_compile],
- [if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1; then
- libgcc_cv_lib_sjlj_exceptions=yes
- elif grep _Unwind_Resume conftest.s >/dev/null 2>&1; then
- libgcc_cv_lib_sjlj_exceptions=no
- fi])
-CFLAGS=$CFLAGS_hold
-rm -f conftest*
-])
-
-if test "$enable_sjlj_exceptions" = "auto"; then
- enable_sjlj_exceptions=$libgcc_cv_lib_sjlj_exceptions
-fi
-
-case $enable_sjlj_exceptions in
-yes)
- AC_DEFINE(LIBGCC_SJLJ_EXCEPTIONS, 1,
- [Define if the C compiler is configured for setjmp/longjmp exceptions.])
- ;;
-no)
- ;;
-*)
- AC_MSG_ERROR([unable to detect exception model])
- ;;
-esac
+# Check if the compiler is configured for setjmp/longjmp exceptions.
+GCC_CHECK_SJLJ_EXCEPTIONS
AC_ARG_ENABLE([explicit-exception-frame-registration],
[AC_HELP_STRING([--enable-explicit-exception-frame-registration],
[
force_explicit_eh_registry=
if test "$enable_explicit_exception_frame_registration" = yes; then
- if test "$enable_sjlj_exceptions" = yes; then
- AC_MSG_ERROR([Can't enable both of --enable-sjlj-exceptions
- and --enable-explicit-exception-frame-registration])
+ if test $ac_cv_sjlj_exceptions = yes; then
+ AC_MSG_ERROR([Can't --enable-explicit-exception-frame-registration
+ with setjmp/longjmp exceptions])
fi
force_explicit_eh_registry=-DUSE_EH_FRAME_REGISTRY_ALWAYS
fi
[libgcc_cv_mips_hard_float=no])])
esac
+case ${host} in
+*-*-solaris2*)
+ # Check for system-provided CRTs on Solaris 11.x and Solaris 12.
+ AC_CACHE_CHECK([system-provided CRTs on Solaris],
+ [libgcc_cv_solaris_crts],
+ [libgcc_cv_solaris_crts=no
+ libgcc_sysroot="`${CC} -print-sysroot`"
+ libgcc_libdir="$libgcc_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 ${host} in
+ i?86-*-solaris2* | x86_64-*-solaris2*)
+ if test -h "$libgcc_libdir/gcrt1.o"; then libgcc_cv_solaris_crts=yes; fi
+ ;;
+ sparc*-*-solaris2*)
+ if test -f "$libgcc_libdir/crt1.o"; then libgcc_cv_solaris_crts=yes; fi
+ ;;
+ esac])
+ if test $libgcc_cv_solaris_crts = yes; then
+ AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
+ [Define if the system-provided CRTs are present on Solaris.])
+ fi
+ ;;
+esac
+
# Determine the version of glibc, if any, used on the target.
AC_MSG_CHECKING([for target glibc version])
AC_ARG_WITH([glibc-version],
;;
esac
+case ${host} in
+# At present, we cannot turn -mfloat128 on via #pragma GCC target,
+# so just check if we have VSX (ISA 2.06) support to build the
+# software libraries, and whether the assembler can handle xsaddqp
+# for hardware support.
+powerpc*-*-linux*)
+ AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries],
+ [libgcc_cv_powerpc_float128],
+ [AC_COMPILE_IFELSE(
+ [#pragma GCC target ("vsx")
+ vector double dadd (vector double a, vector double b) { return a + b; }],
+ [libgcc_cv_powerpc_float128=yes],
+ [libgcc_cv_powerpc_float128=no])])
+
+ AC_CACHE_CHECK([for PowerPC ISA 3.0 to build hardware __float128 libraries],
+ [libgcc_cv_powerpc_float128_hw],
+ [AC_COMPILE_IFELSE(
+ [#pragma GCC target ("vsx,power9-vector")
+ #include <sys/auxv.h>
+ #ifndef AT_PLATFORM
+ #error "AT_PLATFORM is not defined"
+ #endif
+ vector unsigned char (vector unsigned char a, vector unsigned char b)
+ {
+ vector unsigned char ret;
+ __asm__ ("xsaddqp %0,%1,%2" : "=v" (ret) : "v" (a), "v" (b));
+ return ret;
+ }
+ void *add_resolver (void) { return (void *) add; }
+ __float128 add_ifunc (__float128, __float128)
+ __attribute__ ((__ifunc__ ("add_resolver")));],
+ [libgcc_cv_powerpc_float128_hw=yes],
+ [libgcc_cv_powerpc_float128_hw=no])])
+esac
+
# Collect host-machine-specific information.
. ${srcdir}/config.host
# Used for constructing correct paths for offload compilers.
accel_dir_suffix=
+real_host_noncanonical=${host_noncanonical}
if test x"$enable_as_accelerator_for" != x; then
accel_dir_suffix=/accel/${target_noncanonical}
- case "${target_noncanonical}" in
- *-intelmicemul-*)
- # In this case we expect offload compiler to be built as native, so we
- # need to change install directory for driver to be able to find libgcc.
- host_noncanonical=${enable_as_accelerator_for} ;;
- esac
+ real_host_noncanonical=${enable_as_accelerator_for}
fi
AC_SUBST(accel_dir_suffix)
+AC_SUBST(real_host_noncanonical)
if test x"$enable_offload_targets" != x; then
- extra_parts="${extra_parts} crtoffloadbegin.o crtoffloadend.o"
+ extra_parts="${extra_parts} crtoffloadbegin.o crtoffloadend.o crtoffloadtable.o"
fi
# Check if Solaris/x86 linker supports ZERO terminator unwind entries.
;;
esac
+# Check if xtensa target is configured for windowed ABI and thus needs to use
+# custom unwind code.
+# This is after config.host so we can augment tmake_file.
+case ${host} in
+xtensa*-*)
+ cat > conftest.c <<EOF
+ #ifdef __XTENSA_CALL0_ABI__
+ #error
+ #endif
+EOF
+ if AC_TRY_COMMAND(${CC-cc} -E -o conftest.i conftest.c 1>&AS_MESSAGE_LOG_FD); then
+ tmake_file="${tmake_file} xtensa/t-windowed"
+ fi
+ ;;
+esac
+
# Check for visibility support. This is after config.host so that
# we can check for asm_hidden_op.
AC_CACHE_CHECK([for __attribute__((visibility("hidden")))],
projects / gcc.git / blobdiff