1 GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
2 # Local configure fragment for sysdeps/x86_64.
4 dnl Accept as 2.24 or newer for AVX512 load and store.
5 AC_CHECK_PROG_VER(AS, $AS, --version,
6 [GNU assembler.* \([0-9]*\.[0-9.]*\)],
7 [2.2[4-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*],
8 critic_missing="$critic_missing The program AS is required in version >= 2.24 for target x86_64.")
10 dnl Check if asm supports AVX512DQ.
11 AC_CACHE_CHECK(for AVX512DQ support in assembler, libc_cv_asm_avx512dq, [dnl
12 cat > conftest.s <<\EOF
13 vandpd (%rax), %zmm6, %zmm1
15 if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
16 libc_cv_asm_avx512dq=yes
18 libc_cv_asm_avx512dq=no
21 if test $libc_cv_asm_avx512dq = yes; then
22 AC_DEFINE(HAVE_AVX512DQ_ASM_SUPPORT)
25 dnl Check if -mavx512f works.
26 AC_CACHE_CHECK(for AVX512 support, libc_cv_cc_avx512, [dnl
27 LIBC_TRY_CC_OPTION([-mavx512f], [libc_cv_cc_avx512=$libc_cv_asm_avx512dq], [libc_cv_cc_avx512=no])
29 if test $libc_cv_cc_avx512 = yes; then
30 AC_DEFINE(HAVE_AVX512_SUPPORT)
32 LIBC_CONFIG_VAR([config-cflags-avx512], [$libc_cv_cc_avx512])
34 dnl Check whether asm supports Intel MPX
35 AC_CACHE_CHECK(for Intel MPX support, libc_cv_asm_mpx, [dnl
36 cat > conftest.s <<\EOF
39 if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
45 if test $libc_cv_asm_mpx = yes; then
46 AC_DEFINE(HAVE_MPX_SUPPORT)
49 if test x"$build_mathvec" = xnotset; then
53 dnl It is always possible to access static and hidden symbols in an
54 dnl position independent way.
55 AC_DEFINE(PI_STATIC_AND_HIDDEN)
57 test -n "$critic_missing" && AC_MSG_ERROR([