| 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(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 "$enableval" in |
| yes) enable_vtable_verify=yes ;; |
| no) enable_vtable_verify=no ;; |
| *) enable_vtable_verify=no;; |
| esac], |
| [enable_vtable_verify=no]) |
| AC_SUBST(enable_vtable_verify) |
| |
| AC_ARG_WITH(aix-soname, |
| [AS_HELP_STRING([--with-aix-soname=aix|svr4|both], |
| [shared library versioning (aka "SONAME") variant to provide on AIX])], |
| [case "${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 |
| |
| # 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([$target_thread_file]) |
| |
| # Check for assembler CFI support. |
| AC_CACHE_CHECK([whether assembler supports CFI directives], [libgcc_cv_cfi], |
| [AC_COMPILE_IFELSE( |
| [AC_LANG_SOURCE([asm("\n\ |
| .text\n\ |
| .cfi_startproc\n\ |
| .cfi_personality 0, symbol\n\ |
| .cfi_endproc");])], |
| [libgcc_cv_cfi=yes], |
| [libgcc_cv_cfi=no])]) |
| |
| # Check 32bit or 64bit. In the case of MIPS, this really determines the |
| # word size rather than the address size. |
| cat > conftest.c <<EOF |
| #if defined(__x86_64__) || (!defined(__i386__) && defined(__LP64__)) \ |
| || defined(__mips64) |
| host_address=64 |
| #else |
| host_address=32 |
| #endif |
| EOF |
| eval `${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 |