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b2d4456b33
POSIX defines the = operator, but not ==. Fix the few places where we incorrectly used ==.
52 lines
1.5 KiB
Plaintext
52 lines
1.5 KiB
Plaintext
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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# Local configure fragment for sysdeps/x86_64.
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dnl Check if asm supports AVX512.
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AC_CACHE_CHECK(for AVX512 support in assembler, libc_cv_asm_avx512, [dnl
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cat > conftest.s <<\EOF
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vmovdqu64 %zmm0, (%rsp)
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vandpd (%rax), %zmm6, %zmm1
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EOF
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if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
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libc_cv_asm_avx512=yes
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else
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libc_cv_asm_avx512=no
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fi
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rm -f conftest*])
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if test $libc_cv_asm_avx512 = yes; then
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AC_DEFINE(HAVE_AVX512_ASM_SUPPORT)
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fi
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dnl Check if -mavx512f works.
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AC_CACHE_CHECK(for AVX512 support, libc_cv_cc_avx512, [dnl
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LIBC_TRY_CC_OPTION([-mavx512f], [libc_cv_cc_avx512=$libc_cv_asm_avx512], [libc_cv_cc_avx512=no])
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])
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if test $libc_cv_cc_avx512 = yes; then
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AC_DEFINE(HAVE_AVX512_SUPPORT)
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fi
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LIBC_CONFIG_VAR([config-cflags-avx512], [$libc_cv_cc_avx512])
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dnl Check whether asm supports Intel MPX
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AC_CACHE_CHECK(for Intel MPX support, libc_cv_asm_mpx, [dnl
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cat > conftest.s <<\EOF
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bndmov %bnd0,(%rsp)
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EOF
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if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
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libc_cv_asm_mpx=yes
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else
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libc_cv_asm_mpx=no
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fi
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rm -f conftest*])
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if test $libc_cv_asm_mpx = yes; then
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AC_DEFINE(HAVE_MPX_SUPPORT)
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fi
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if test x"$build_mathvec" = xnotset; then
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build_mathvec=yes
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fi
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dnl It is always possible to access static and hidden symbols in an
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dnl position independent way.
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AC_DEFINE(PI_STATIC_AND_HIDDEN)
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# work around problem with autoconf and empty lines at the end of files
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