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- dnl Process this file with autoconf to produce a configure script.
- 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/override.m4)
- sinclude(../config/picflag.m4)
- sinclude(../config/dfp.m4)
- sinclude(../config/unwind_ipinfo.m4)
- sinclude(../config/gthr.m4)
- sinclude(../config/sjlj.m4)
- sinclude(../config/cet.m4)
- AC_INIT([GNU C Runtime Library], 1.0,,[libgcc])
- AC_CONFIG_SRCDIR([static-object.mk])
- # The libgcc should not depend on any header files
- AC_DEFUN([_AC_INCLUDES_DEFAULT_REQUIREMENTS],
- [m4_divert_text([DEFAULTS],
- [ac_includes_default='/* none */'])])
- AC_ARG_WITH(target-subdir,
- [ --with-target-subdir=SUBDIR Configuring in a subdirectory for target])
- AC_ARG_WITH(cross-host,
- [ --with-cross-host=HOST Configuring with a cross compiler])
- AC_ARG_WITH(ld,
- [ --with-ld arrange to use the specified ld (full pathname)])
- if test "${srcdir}" = "."; then
- if test -n "${with_build_subdir}"; then
- libgcc_topdir="${srcdir}/../.."
- with_target_subdir=
- elif test -z "${with_target_subdir}"; then
- libgcc_topdir="${srcdir}/.."
- else
- if test "${with_target_subdir}" != "."; then
- libgcc_topdir="${srcdir}/${with_multisrctop}../.."
- else
- libgcc_topdir="${srcdir}/${with_multisrctop}.."
- fi
- fi
- else
- libgcc_topdir="${srcdir}/.."
- fi
- AC_SUBST(libgcc_topdir)
- AC_CONFIG_AUX_DIR($libgcc_topdir)
- AC_CONFIG_HEADER(auto-target.h:config.in)
- AC_ARG_ENABLE(shared,
- [ --disable-shared don't provide a shared libgcc],
- [
- case $enable_shared in
- yes | no) ;;
- *)
- enable_shared=no
- IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:,"
- for pkg in $enableval; do
- if test "X$pkg" = "Xgcc" || test "X$pkg" = "Xlibgcc"; then
- enable_shared=yes
- fi
- done
- IFS="$ac_save_ifs"
- ;;
- esac
- ], [enable_shared=yes])
- AC_SUBST(enable_shared)
- AC_ARG_ENABLE(vtable-verify,
- [ --enable-vtable-verify Enable vtable verification feature ],
- [case "$enableval" in
- yes) enable_vtable_verify=yes ;;
- no) enable_vtable_verify=no ;;
- *) enable_vtable_verify=no;;
- esac],
- [enable_vtable_verify=no])
- AC_SUBST(enable_vtable_verify)
- AC_ARG_WITH(aix-soname,
- [AS_HELP_STRING([--with-aix-soname=aix|svr4|both],
- [shared library versioning (aka "SONAME") variant to provide on AIX])],
- [case "${host}:${enable_shared}" in
- power*-*-aix[[5-9]]*:yes)
- AC_MSG_CHECKING([which variant of shared library versioning to provide for shared libgcc])
- case ${withval} in
- aix|svr4|both) ;;
- *) AC_MSG_ERROR([Unknown argument to --with-aix-soname]);;
- esac
- AC_MSG_RESULT($withval)
- ;;
- *) with_aix_soname=aix ;;
- esac
- ], [with_aix_soname=aix])
- AC_SUBST(with_aix_soname)
- GCC_PICFLAG
- AC_SUBST(PICFLAG)
- AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
- AC_ARG_ENABLE(version-specific-runtime-libs,
- [ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
- [case "$enableval" in
- yes) version_specific_libs=yes ;;
- no) version_specific_libs=no ;;
- *) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
- esac],
- [version_specific_libs=no])
- AC_MSG_RESULT($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
- slibdir='$(libsubdir)'
- elif test -n "$with_cross_host" && test x"$with_cross_host" != x"no"; then
- case ${with_toolexeclibdir} in
- no)
- slibdir='$(exec_prefix)/$(host_noncanonical)/lib'
- ;;
- *)
- slibdir=${with_toolexeclibdir}
- ;;
- esac
- else
- slibdir='$(libdir)'
- fi])
- AC_SUBST(slibdir)
- # Command-line options.
- # Very limited version of AC_MAINTAINER_MODE.
- AC_ARG_ENABLE([maintainer-mode],
- [AC_HELP_STRING([--enable-maintainer-mode],
- [enable make rules and dependencies not useful (and
- sometimes confusing) to the casual installer])],
- [case ${enable_maintainer_mode} in
- yes) MAINT='' ;;
- no) MAINT='#' ;;
- *) AC_MSG_ERROR([--enable-maintainer-mode must be yes or no]) ;;
- esac
- maintainer_mode=${enableval}],
- [MAINT='#'])
- AC_SUBST([MAINT])dnl
- AC_PROG_INSTALL
- AC_PROG_AWK
- # We need awk; bail out if it's missing.
- case ${AWK} in
- "") AC_MSG_ERROR([can't build without awk, bailing out]) ;;
- esac
- AC_CANONICAL_HOST
- ACX_NONCANONICAL_HOST
- ACX_NONCANONICAL_TARGET
- GCC_TOPLEV_SUBDIRS
- AC_ARG_ENABLE(gcov,
- [ --disable-gcov don't provide libgcov and related host tools],
- [], [case $target in
- bpf-*-*)
- enable_gcov=no
- ;;
- *)
- enable_gcov=yes
- ;;
- esac])
- AC_SUBST(enable_gcov)
- # Calculate toolexeclibdir
- # Also toolexecdir, though it's only used in toolexeclibdir
- case ${version_specific_libs} in
- yes)
- # Need the gcc compiler version to know where to install libraries
- # and header files if --enable-version-specific-runtime-libs option
- # is selected.
- toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
- toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
- ;;
- no)
- if test -n "$with_cross_host" &&
- test x"$with_cross_host" != x"no"; then
- # Install a library built with a cross compiler in tooldir, not libdir.
- toolexecdir='$(exec_prefix)/$(target_noncanonical)'
- case ${with_toolexeclibdir} in
- no)
- toolexeclibdir='$(toolexecdir)/lib'
- ;;
- *)
- toolexeclibdir=${with_toolexeclibdir}
- ;;
- esac
- else
- toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
- toolexeclibdir='$(libdir)'
- fi
- multi_os_directory=`$CC -print-multi-os-directory`
- case $multi_os_directory in
- .) ;; # Avoid trailing /.
- *) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
- esac
- ;;
- esac
- AC_SUBST(toolexecdir)
- AC_SUBST(toolexeclibdir)
- dnl These must be called before AM_PROG_LIBTOOL, because it may want
- dnl to call AC_CHECK_PROG.
- AC_CHECK_TOOL(AR, ar)
- AC_CHECK_TOOL(LIPO, lipo, :)
- AC_CHECK_TOOL(NM, nm)
- AC_CHECK_TOOL(RANLIB, ranlib, :)
- AC_CHECK_TOOL(STRIP, strip, :)
- AC_PROG_LN_S
- GCC_NO_EXECUTABLES
- AC_PROG_CC
- AC_PROG_CPP_WERROR
- AC_SYS_LARGEFILE
- AC_CHECK_SIZEOF([double])
- AC_CHECK_SIZEOF([long double])
- AS_VAR_ARITH([double_type_size], [$ac_cv_sizeof_double \* 8])
- AS_VAR_ARITH([long_double_type_size], [$ac_cv_sizeof_long_double \* 8])
- AC_SUBST(double_type_size)
- AC_SUBST(long_double_type_size)
- AC_CHECK_HEADERS(inttypes.h stdint.h stdlib.h ftw.h \
- unistd.h sys/stat.h sys/types.h \
- string.h strings.h memory.h sys/auxv.h sys/mman.h)
- AC_HEADER_STDC
- # Check for decimal float support.
- AC_CACHE_CHECK([whether decimal floating point is supported], [libgcc_cv_dfp],
- [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
- #include <fenv.h>
- ]], [[
- _Decimal32 x;
- int fe_except =
- FE_INVALID|FE_DIVBYZERO|FE_OVERFLOW|FE_UNDERFLOW|FE_INEXACT;
- ]])],
- [libgcc_cv_dfp=yes],
- [libgcc_cv_dfp=no])])
- decimal_float=$libgcc_cv_dfp
- AC_SUBST(decimal_float)
- GCC_AC_ENABLE_DECIMAL_FLOAT([$host])
- # Check for fixed-point support.
- AC_CACHE_CHECK([whether fixed-point is supported], [libgcc_cv_fixed_point],
- [AC_COMPILE_IFELSE([AC_LANG_SOURCE([_Sat _Fract x;])],
- [libgcc_cv_fixed_point=yes],
- [libgcc_cv_fixed_point=no])])
- fixed_point=$libgcc_cv_fixed_point
- AC_SUBST(fixed_point)
- # For platforms with the unwind ABI which includes an unwind library,
- # libunwind, we can choose to use the system libunwind.
- # config.gcc also contains tests of with_system_libunwind.
- GCC_CHECK_UNWIND_GETIPINFO
- # Check if the compiler is configured for setjmp/longjmp exceptions.
- GCC_CHECK_SJLJ_EXCEPTIONS
- GCC_CET_FLAGS(CET_FLAGS)
- AC_SUBST(CET_FLAGS)
- AC_ARG_ENABLE([explicit-exception-frame-registration],
- [AC_HELP_STRING([--enable-explicit-exception-frame-registration],
- [register exception tables explicitly at module start, for use
- e.g. for compatibility with installations without PT_GNU_EH_FRAME support])],
- [
- force_explicit_eh_registry=
- if test "$enable_explicit_exception_frame_registration" = yes; then
- 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 $target in
- msp430*elfbare)
- use_tm_clone_registry=-DUSE_TM_CLONE_REGISTRY=0
- ;;
- esac
- ])
- AC_SUBST([use_tm_clone_registry])
- AC_LIB_PROG_LD_GNU
- AC_MSG_CHECKING([for thread model used by GCC])
- target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
- AC_MSG_RESULT([$target_thread_file])
- # Check for assembler CFI support.
- AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi],
- [AC_COMPILE_IFELSE(
- [AC_LANG_SOURCE([asm("\n\
- .text\n\
- .cfi_startproc\n\
- .cfi_personality 0, symbol\n\
- .cfi_endproc");])],
- [libgcc_cv_cfi=yes],
- [libgcc_cv_cfi=no])])
- # Check 32bit or 64bit. In the case of MIPS, this really determines the
- # word size rather than the address size.
- cat > conftest.c <<EOF
- #if defined(__x86_64__) || (!defined(__i386__) && defined(__LP64__)) \
- || defined(__mips64) || defined(__loongarch64)
- host_address=64
- #else
- host_address=32
- #endif
- EOF
- eval `${CC-cc} -E conftest.c | grep host_address=`
- rm -f conftest.c
- case ${host} in
- mips*-*-*)
- AC_CACHE_CHECK([whether the target is hard-float],
- [libgcc_cv_mips_hard_float],
- [AC_COMPILE_IFELSE(
- [AC_LANG_SOURCE([#ifndef __mips_hard_float
- #error FOO
- #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 $libgcc_cv_solaris_crts = yes; then
- AC_DEFINE(HAVE_SOLARIS_CRTS, 1,
- [Define if the system-provided CRTs are present on Solaris.])
- fi
- ;;
- esac
- # Determine the version of glibc, if any, used on the target.
- AC_MSG_CHECKING([for target glibc version])
- AC_ARG_WITH([glibc-version],
- [AS_HELP_STRING([--with-glibc-version=M.N],
- [assume GCC used with glibc version M.N or later])], [
- if [echo "$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 "$with_glibc_version" | sed -e 's/.*\.//'`
- else
- AC_MSG_ERROR([option --with-glibc-version requires a version number M.N])
- fi], [
- AC_COMPUTE_INT([glibc_version_major], [__GLIBC__],
- [#include <features.h>],
- [glibc_version_major=0])
- AC_COMPUTE_INT([glibc_version_minor], [__GLIBC_MINOR__],
- [#include <features.h>],
- [glibc_version_minor=0])])
- AC_MSG_RESULT([$glibc_version_major.$glibc_version_minor])
- # Determine floating-point type for powerpc*-*-linux* or vxworks7*.
- # Single-precision-only FPRs are not a supported configuration for
- # this target, so are not allowed for in this test.
- case ${host} in
- powerpc*-*-linux* | powerpc*-*-vxworks7*)
- cat > conftest.c <<EOF
- #ifdef __powerpc64__
- ppc_fp_type=64
- #elif defined _SOFT_FLOAT
- ppc_fp_type=soft
- #elif defined _SOFT_DOUBLE
- ppc_fp_type=e500v1
- #elif defined __NO_FPRS__
- ppc_fp_type=e500v2
- #else
- ppc_fp_type=hard
- #endif
- EOF
- eval `${CC-cc} -E conftest.c | grep ppc_fp_type=`
- rm -f conftest.c
- # glibc 2.19 and later provide all the soft-fp functions, with proper
- # interactions with <fenv.h> exception and rounding mode handling, so
- # make libgcc's versions into compat symbols if a recent enough glibc
- # version is being used.
- ppc_fp_compat=
- case ${ppc_fp_type} in
- soft|e500v1|e500v2)
- if test $glibc_version_major -gt 2 \
- || ( test $glibc_version_major -eq 2 \
- && test $glibc_version_minor -ge 19 ); then
- ppc_fp_compat="t-softfp-compat"
- fi
- ;;
- esac
- ;;
- 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="$saved_CFLAGS"
- saved_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS -mcpu=power10 -mfloat128-hardware"
- AC_CACHE_CHECK([for PowerPC ISA 3.1 to build hardware __float128 libraries],
- [libgcc_cv_powerpc_3_1_float128_hw],
- [AC_COMPILE_IFELSE(
- [AC_LANG_SOURCE([#include <sys/auxv.h>
- #ifndef AT_PLATFORM
- #error "AT_PLATFORM is not defined"
- #endif
- #ifndef __BUILTIN_CPU_SUPPORTS__
- #error "__builtin_cpu_supports is not available"
- #endif
- vector unsigned char conv (vector unsigned char qs)
- {
- vector unsigned char ret;
- __asm__ ("xscvsqqp %0,%1" : "=v" (ret) : "v" (qs));
- return ret;
- }
- void *conv_resolver (void) { return (void *) conv; }
- __float128 conv_ifunc (__float128)
- __attribute__ ((__ifunc__ ("conv_resolver")));])],
- [libgcc_cv_powerpc_3_1_float128_hw=yes],
- [libgcc_cv_powerpc_3_1_float128_hw=no])])
- CFLAGS="$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}
- 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 crtoffloadtable.o"
- fi
- # Check if Solaris/x86 linker supports ZERO terminator unwind entries.
- # This is after config.host so we can augment tmake_file.
- # Link with -nostartfiles -nodefaultlibs since neither are present while
- # building libgcc.
- case ${host} in
- i?86-*-solaris2* | x86_64-*-solaris2*)
- cat > conftest.s <<EOF
- .section .eh_frame,"a",@unwind
- .zero 4
- .section .jcr,"aw",@progbits
- .zero 8
- EOF
- if AC_TRY_COMMAND(${CC-cc} -shared -nostartfiles -nodefaultlibs -o conftest.so conftest.s 1>&AS_MESSAGE_LOG_FD); then
- tmake_file="${tmake_file} i386/t-crtstuff"
- fi
- ;;
- 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 ${host} in
- xtensa*-*)
- AC_COMPILE_IFELSE([AC_LANG_SOURCE(
- [#ifdef __XTENSA_CALL0_ABI__
- #error
- #endif
- ])],
- [tmake_file="${tmake_file} xtensa/t-windowed"])
- ;;
- 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")))],
- libgcc_cv_hidden_visibility_attribute, [
- echo 'int __attribute__ ((visibility ("hidden"))) foo (void) { return 1; }' > conftest.c
- libgcc_cv_hidden_visibility_attribute=no
- if AC_TRY_COMMAND(${CC-cc} -Werror -S conftest.c -o conftest.s 1>&AS_MESSAGE_LOG_FD); then
- if grep "\\$asm_hidden_op.*foo" conftest.s >/dev/null; then
- libgcc_cv_hidden_visibility_attribute=yes
- fi
- fi
- rm -f conftest.*
- ])
- 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 $libgcc_cv_cfi_sections_directive = yes; then
- AC_DEFINE(HAVE_AS_CFI_SECTIONS, 1, [Define to 1 if the assembler supports .cfi_sections .debug_frame directive.])
- fi
- # See if we have thread-local storage. We can only test assembler
- # since link-time and run-time tests require the newly built
- # gcc, which can't be used to build executable due to that libgcc
- # is yet to be built here.
- GCC_CHECK_CC_TLS
- set_have_cc_tls=
- if test "$enable_tls $gcc_cv_have_cc_tls" = "yes yes"; then
- set_have_cc_tls="-DHAVE_CC_TLS"
- fi
- AC_SUBST(set_have_cc_tls)
- # See if we have emulated thread-local storage.
- GCC_CHECK_EMUTLS
- set_use_emutls=
- if test "$enable_tls $gcc_cv_use_emutls" = "yes yes"; then
- set_use_emutls="-DUSE_EMUTLS"
- fi
- AC_SUBST(set_use_emutls)
- dnl Check if as supports AVX instructions.
- AC_DEFUN([LIBGCC_CHECK_AS_AVX], [
- case "${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)));]])],
- [libgcc_cv_init_priority=yes],[libgcc_cv_init_priority=no])])
- if test $libgcc_cv_init_priority = yes; then
- AC_DEFINE(HAVE_INIT_PRIORITY, 1,
- [Define if the compiler supports init priority.])
- fi
- # Conditionalize the sfp-machine.h header for this target machine.
- if test -z "${sfp_machine_header}"; then
- sfp_machine_header=$cpu_type/sfp-machine.h
- if test -f ${srcdir}/config/${sfp_machine_header}; then
- :
- else
- sfp_machine_header=no-sfp-machine.h
- fi
- fi
- AC_SUBST(sfp_machine_header)
- # Conditionalize the makefile for this target machine.
- tmake_file_=
- for f in ${tmake_file}
- do
- if test -f ${srcdir}/config/$f
- then
- tmake_file_="${tmake_file_} \$(srcdir)/config/$f"
- fi
- done
- tmake_file="${tmake_file_}"
- AC_SUBST(tmake_file)
- # Likewise export definitions for libgcc_tm.h
- tm_file_=
- for f in ${tm_file}
- do
- tm_file_="${tm_file_} \$(srcdir)/config/$f"
- done
- tm_file="${tm_file_}"
- AC_SUBST(tm_file)
- AC_SUBST(tm_defines)
- # Map from thread model to thread header.
- GCC_AC_THREAD_HEADER([$target_thread_file])
- # Determine what GCC version number to use in filesystem paths.
- GCC_BASE_VER
- # Substitute configuration variables
- AC_SUBST(cpu_type)
- AC_SUBST(extra_parts)
- AC_SUBST(asm_hidden_op)
- AC_SUBST(enable_execute_stack)
- AC_SUBST(unwind_header)
- AC_SUBST(md_unwind_header)
- AC_SUBST(sfp_machine_header)
- AC_SUBST(thread_header)
- # We need multilib support.
- AC_CONFIG_FILES([Makefile])
- AC_CONFIG_COMMANDS([default],
- [[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
- if test -n "$CONFIG_FILES"; then
- # FIXME: We shouldn't need to set ac_file
- ac_file=Makefile
- . ${libgcc_topdir}/config-ml.in
- fi]],
- [[srcdir=${srcdir}
- host=${host}
- with_target_subdir=${with_target_subdir}
- with_multisubdir=${with_multisubdir}
- ac_configure_args="--enable-multilib ${ac_configure_args}"
- CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
- libgcc_topdir=${libgcc_topdir}
- CC="${CC}"
- ]])
- AC_OUTPUT
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