sinclude(../config/enable.m4)
sinclude(../config/tls.m4)
+sinclude(../config/toolexeclibdir.m4)
sinclude(../config/acx.m4)
sinclude(../config/no-executables.m4)
sinclude(../config/lib-ld.m4)
sinclude(../config/dfp.m4)
sinclude(../config/unwind_ipinfo.m4)
sinclude(../config/gthr.m4)
+sinclude(../config/sjlj.m4)
+sinclude(../config/cet.m4)
-AC_PREREQ(2.64)
AC_INIT([GNU C Runtime Library], 1.0,,[libgcc])
AC_CONFIG_SRCDIR([static-object.mk])
], [enable_shared=yes])
AC_SUBST(enable_shared)
+AC_ARG_ENABLE(gcov,
+[ --disable-gcov don't provide libgcov and related host tools],
+[], [enable_gcov=yes])
+AC_SUBST(enable_gcov)
+
AC_ARG_ENABLE(vtable-verify,
[ --enable-vtable-verify Enable vtable verification feature ],
[case "$enableval" in
[version_specific_libs=no])
AC_MSG_RESULT($version_specific_libs)
+GCC_WITH_TOOLEXECLIBDIR
+
AC_ARG_WITH(slibdir,
[ --with-slibdir=DIR shared libraries in DIR [LIBDIR]],
slibdir="$with_slibdir",
-if test "${version_specific_libs}" = yes; then
+[if test "${version_specific_libs}" = yes; then
slibdir='$(libsubdir)'
elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then
- slibdir='$(exec_prefix)/$(host_noncanonical)/lib'
+ case ${with_toolexeclibdir} in
+ no)
+ slibdir='$(exec_prefix)/$(host_noncanonical)/lib'
+ ;;
+ *)
+ slibdir=${with_toolexeclibdir}
+ ;;
+ esac
else
slibdir='$(libdir)'
-fi)
+fi])
AC_SUBST(slibdir)
# Command-line options.
test x"$with_cross_host" != x"no"; then
# Install a library built with a cross compiler in tooldir, not libdir.
toolexecdir='$(exec_prefix)/$(target_noncanonical)'
- toolexeclibdir='$(toolexecdir)/lib'
+ case ${with_toolexeclibdir} in
+ no)
+ toolexeclibdir='$(toolexecdir)/lib'
+ ;;
+ *)
+ toolexeclibdir=${with_toolexeclibdir}
+ ;;
+ esac
else
toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
toolexeclibdir='$(libdir)'
AC_PROG_CC
AC_PROG_CPP_WERROR
+AC_SYS_LARGEFILE
+
AC_CHECK_SIZEOF([double])
AC_CHECK_SIZEOF([long double])
AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8])
AC_SUBST(double_type_size)
AC_SUBST(long_double_type_size)
+AC_CHECK_HEADERS(inttypes.h stdint.h stdlib.h ftw.h \
+ unistd.h sys/stat.h sys/types.h \
+ string.h strings.h memory.h sys/auxv.h)
+AC_HEADER_STDC
+
# Check for decimal float support.
AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp],
[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
# Check for fixed-point support.
AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point],
- [AC_COMPILE_IFELSE([_Sat _Fract x;], [libgcc_cv_fixed_point=yes],
+ [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_Sat _Fract x;])],
+ [libgcc_cv_fixed_point=yes],
[libgcc_cv_fixed_point=no])])
fixed_point=$libgcc_cv_fixed_point
AC_SUBST(fixed_point)
# 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=$CFLAGS_hold
-rm -f conftest*
-])
+# Check if the compiler is configured for setjmp/longjmp exceptions.
+GCC_CHECK_SJLJ_EXCEPTIONS
-if test "$enable_sjlj_exceptions" = "auto"; then
- enable_sjlj_exceptions=$libgcc_cv_lib_sjlj_exceptions
-fi
-
-case $enable_sjlj_exceptions in
-yes)
- AC_DEFINE(LIBGCC_SJLJ_EXCEPTIONS, 1,
- [Define if the C compiler is configured for setjmp/longjmp exceptions.])
- ;;
-no)
- ;;
-*)
- AC_MSG_ERROR([unable to detect exception model])
- ;;
-esac
+GCC_CET_FLAGS(CET_FLAGS)
+AC_SUBST(CET_FLAGS)
AC_ARG_ENABLE([explicit-exception-frame-registration],
[AC_HELP_STRING([--enable-explicit-exception-frame-registration],
[
force_explicit_eh_registry=
if test "$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 $ac_cv_sjlj_exceptions = yes; then
+ AC_MSG_ERROR([Can't --enable-explicit-exception-frame-registration
+ with setjmp/longjmp exceptions])
fi
force_explicit_eh_registry=-DUSE_EH_FRAME_REGISTRY_ALWAYS
fi
])
AC_SUBST([force_explicit_eh_registry])
+AC_ARG_ENABLE([tm-clone-registry],
+[ --disable-tm-clone-registry disable TM clone registry],
+[
+use_tm_clone_registry=
+if test "$enable_tm_clone_registry" = no; then
+ use_tm_clone_registry=-DUSE_TM_CLONE_REGISTRY=0
+fi
+],
+[
+use_tm_clone_registry=
+case $target in
+ msp430*elfbare)
+ use_tm_clone_registry=-DUSE_TM_CLONE_REGISTRY=0
+ ;;
+esac
+])
+AC_SUBST([use_tm_clone_registry])
+
AC_LIB_PROG_LD_GNU
AC_MSG_CHECKING([for thread model used by GCC])
# Check for assembler CFI support.
AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi],
[AC_COMPILE_IFELSE(
-[asm("\n\
+[AC_LANG_SOURCE([asm("\n\
.text\n\
.cfi_startproc\n\
.cfi_personality 0, symbol\n\
- .cfi_endproc");],
+ .cfi_endproc");])],
[libgcc_cv_cfi=yes],
[libgcc_cv_cfi=no])])
AC_CACHE_CHECK([whether the target is hard-float],
[libgcc_cv_mips_hard_float],
[AC_COMPILE_IFELSE(
- [#ifndef __mips_hard_float
+ [AC_LANG_SOURCE([#ifndef __mips_hard_float
#error FOO
- #endif],
+ #endif
+ ])],
[libgcc_cv_mips_hard_float=yes],
[libgcc_cv_mips_hard_float=no])])
esac
+case ${host} in
+*-*-solaris2*)
+ # Check for system-provided CRTs on Solaris 11.4.
+ AC_CACHE_CHECK([system-provided CRTs on Solaris],
+ [libgcc_cv_solaris_crts],
+ [libgcc_cv_solaris_crts=no
+ libgcc_sysroot="`${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 ${host} in
+# At present, we cannot turn -mfloat128 on via #pragma GCC target, so just
+# check if we have VSX (ISA 2.06) support to build the software libraries, and
+# whether the assembler can handle xsaddqp for hardware support. Also check if
+# a new glibc is being used so that __builtin_cpu_supports can be used.
+powerpc*-*-linux*)
+ saved_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -mabi=altivec -mvsx -mfloat128"
+ AC_CACHE_CHECK([for PowerPC ISA 2.06 to build __float128 libraries],
+ [libgcc_cv_powerpc_float128],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_SOURCE([vector double dadd (vector double a, vector double b) { return a + b; }])],
+ [libgcc_cv_powerpc_float128=yes],
+ [libgcc_cv_powerpc_float128=no])])
+
+ CFLAGS="$CFLAGS -mpower9-vector -mfloat128-hardware"
+ AC_CACHE_CHECK([for PowerPC ISA 3.0 to build hardware __float128 libraries],
+ [libgcc_cv_powerpc_float128_hw],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_SOURCE([#include <sys/auxv.h>
+ #ifndef AT_PLATFORM
+ #error "AT_PLATFORM is not defined"
+ #endif
+ #ifndef __BUILTIN_CPU_SUPPORTS__
+ #error "__builtin_cpu_supports is not available"
+ #endif
+ vector unsigned char add (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])])
+ CFLAGS="$saved_CFLAGS"
+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.
# Link with -nostartfiles -nodefaultlibs since neither are present while
# building libgcc.
case ${host} in
-i?86-*-solaris2* | x86_64-*-solaris2.1[[0-9]]*)
+i?86-*-solaris2* | x86_64-*-solaris2*)
cat > conftest.s <<EOF
.section .eh_frame,"a",@unwind
.zero 4
;;
esac
+# Check if Solaris linker support v2 linker mapfile syntax.
+# Link with -nostartfiles -nodefaultlibs since neither are present while
+# building libgcc.
+case ${host} in
+*-*-solaris2*)
+ solaris_ld_v2_maps=no
+ echo 'int main(void) {return 0;}' > conftest.c
+ echo '$mapfile_version 2' > conftest.map
+ if AC_TRY_COMMAND([${CC-cc} -nostartfiles -nodefaultlibs -Wl,-M,conftest.map -o conftest conftest.c 1>&AS_MESSAGE_LOG_FD]); then
+ solaris_ld_v2_maps=yes
+ fi
+ ;;
+esac
+AC_SUBST(solaris_ld_v2_maps)
+
+# 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")))],
if test $libgcc_cv_hidden_visibility_attribute = yes; then
vis_hide='-fvisibility=hidden -DHIDE_EXPORTS'
+ AC_DEFINE_UNQUOTED(AS_HIDDEN_DIRECTIVE, $asm_hidden_op, [Define to the .hidden-like directive if it exists.])
else
vis_hide=
fi
AC_SUBST(vis_hide)
+# Check for .cfi_sections .debug_frame support.
+AC_CACHE_CHECK([for .cfi_sections .debug_frame],
+ libgcc_cv_cfi_sections_directive, [
+ echo 'int foo (int, char *);' > conftest.c
+ echo 'int bar (int x) { char *y = __builtin_alloca (x); return foo (x + 1, y) + 1; }' >> conftest.c
+ libgcc_cv_cfi_sections_directive=no
+ if AC_TRY_COMMAND(${CC-cc} -Werror -g -fno-asynchronous-unwind-tables -fno-unwind-tables -fno-exceptions -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
+ if grep "\\.cfi_sections.*\\.debug_frame" conftest.s >/dev/null; then
+ libgcc_cv_cfi_sections_directive=yes
+ fi
+ fi
+ rm -f conftest.*
+ ])
+if test $libgcc_cv_cfi_sections_directive = yes; then
+ AC_DEFINE(HAVE_AS_CFI_SECTIONS, 1, [Define to 1 if the assembler supports .cfi_sections .debug_frame directive.])
+fi
+
# See if we have thread-local storage. We can only test assembler
# since link-time and run-time tests require the newly built
# gcc, which can't be used to build executable due to that libgcc
fi
AC_SUBST(set_use_emutls)
+dnl Check if as supports AVX instructions.
+AC_DEFUN([LIBGCC_CHECK_AS_AVX], [
+case "${target}" in
+i[[34567]]86-*-* | x86_64-*-*)
+ AC_CACHE_CHECK([if the assembler supports AVX], libgcc_cv_as_avx, [
+ AC_TRY_COMPILE([], [asm("vzeroupper");],
+ [libgcc_cv_as_avx=yes], [libgcc_cv_as_avx=no])
+ ])
+ if test x$libgcc_cv_as_avx = xyes; then
+ AC_DEFINE(HAVE_AS_AVX, 1, [Define to 1 if the assembler supports AVX.])
+ fi
+ ;;
+esac])
+LIBGCC_CHECK_AS_AVX
+
+dnl Check if as supports LSE instructions.
+AC_DEFUN([LIBGCC_CHECK_AS_LSE], [
+case "${target}" in
+aarch64*-*-*)
+ AC_CACHE_CHECK([if the assembler supports LSE], libgcc_cv_as_lse, [
+ AC_TRY_COMPILE([],
+changequote(,)dnl
+ asm(".arch armv8-a+lse\n\tcas w0, w1, [x2]");
+changequote([,])dnl
+ ,
+ [libgcc_cv_as_lse=yes], [libgcc_cv_as_lse=no])
+ ])
+ if test x$libgcc_cv_as_lse = xyes; then
+ AC_DEFINE(HAVE_AS_LSE, 1, [Define to 1 if the assembler supports LSE.])
+ fi
+ ;;
+esac])
+LIBGCC_CHECK_AS_LSE
+
+dnl Check if as supports RTM instructions.
AC_CACHE_CHECK(for init priority support, libgcc_cv_init_priority, [
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,
[[void ip (void) __attribute__ ((constructor (1)));]])],
# Map from thread model to thread header.
GCC_AC_THREAD_HEADER([$target_thread_file])
+# Determine what GCC version number to use in filesystem paths.
+GCC_BASE_VER
+
# Substitute configuration variables
AC_SUBST(cpu_type)
AC_SUBST(extra_parts)
AC_SUBST(asm_hidden_op)
-AC_CONFIG_LINKS([enable-execute-stack.c:$enable_execute_stack])
-AC_CONFIG_LINKS([unwind.h:$unwind_header])
-AC_CONFIG_LINKS([md-unwind-support.h:config/$md_unwind_header])
-AC_CONFIG_LINKS([sfp-machine.h:config/$sfp_machine_header])
-AC_CONFIG_LINKS([gthr-default.h:$thread_header])
+AC_SUBST(enable_execute_stack)
+AC_SUBST(unwind_header)
+AC_SUBST(md_unwind_header)
+AC_SUBST(sfp_machine_header)
+AC_SUBST(thread_header)
# We need multilib support.
AC_CONFIG_FILES([Makefile])
projects / thirdparty / gcc.git / blobdiff