diff options
Diffstat (limited to 'REORG.TODO/sysdeps/x86_64/configure.ac')
| -rw-r--r-- | REORG.TODO/sysdeps/x86_64/configure.ac | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/x86_64/configure.ac b/REORG.TODO/sysdeps/x86_64/configure.ac new file mode 100644 index 0000000000..7d8aaafc0c --- /dev/null +++ b/REORG.TODO/sysdeps/x86_64/configure.ac @@ -0,0 +1,58 @@ +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. +# Local configure fragment for sysdeps/x86_64. + +dnl Accept as 2.24 or newer for AVX512 load and store. +AC_CHECK_PROG_VER(AS, $AS, --version, + [GNU assembler.* \([0-9]*\.[0-9.]*\)], + [2.2[4-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*], + critic_missing="$critic_missing The program AS is required in version >= 2.24 for target x86_64.") + +dnl Check if asm supports AVX512DQ. +AC_CACHE_CHECK(for AVX512DQ support in assembler, libc_cv_asm_avx512dq, [dnl +cat > conftest.s <<\EOF + vandpd (%rax), %zmm6, %zmm1 +EOF +if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then + libc_cv_asm_avx512dq=yes +else + libc_cv_asm_avx512dq=no +fi +rm -f conftest*]) +if test $libc_cv_asm_avx512dq = yes; then + AC_DEFINE(HAVE_AVX512DQ_ASM_SUPPORT) +fi + +dnl Check if -mavx512f works. +AC_CACHE_CHECK(for AVX512 support, libc_cv_cc_avx512, [dnl +LIBC_TRY_CC_OPTION([-mavx512f], [libc_cv_cc_avx512=$libc_cv_asm_avx512dq], [libc_cv_cc_avx512=no]) +]) +if test $libc_cv_cc_avx512 = yes; then + AC_DEFINE(HAVE_AVX512_SUPPORT) +fi +LIBC_CONFIG_VAR([config-cflags-avx512], [$libc_cv_cc_avx512]) + +dnl Check whether asm supports Intel MPX +AC_CACHE_CHECK(for Intel MPX support, libc_cv_asm_mpx, [dnl +cat > conftest.s <<\EOF + bndmov %bnd0,(%rsp) +EOF +if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then + libc_cv_asm_mpx=yes +else + libc_cv_asm_mpx=no +fi +rm -f conftest*]) +if test $libc_cv_asm_mpx = yes; then + AC_DEFINE(HAVE_MPX_SUPPORT) +fi + +if test x"$build_mathvec" = xnotset; then + build_mathvec=yes +fi + +dnl It is always possible to access static and hidden symbols in an +dnl position independent way. +AC_DEFINE(PI_STATIC_AND_HIDDEN) + +test -n "$critic_missing" && AC_MSG_ERROR([ +*** $critic_missing]) |