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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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6c4009 |
# Local configure fragment for sysdeps/x86_64.
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6c4009 |
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dnl Check if asm supports AVX512DQ.
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6c4009 |
AC_CACHE_CHECK(for AVX512DQ support in assembler, libc_cv_asm_avx512dq, [dnl
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6c4009 |
cat > conftest.s <<\EOF
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6c4009 |
vandpd (%rax), %zmm6, %zmm1
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6c4009 |
EOF
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6c4009 |
if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
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6c4009 |
libc_cv_asm_avx512dq=yes
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6c4009 |
else
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6c4009 |
libc_cv_asm_avx512dq=no
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6c4009 |
fi
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6c4009 |
rm -f conftest*])
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6c4009 |
if test $libc_cv_asm_avx512dq = yes; then
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6c4009 |
AC_DEFINE(HAVE_AVX512DQ_ASM_SUPPORT)
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6c4009 |
fi
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6c4009 |
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6c4009 |
dnl Check if -mavx512f works.
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6c4009 |
AC_CACHE_CHECK(for AVX512 support, libc_cv_cc_avx512, [dnl
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6c4009 |
LIBC_TRY_CC_OPTION([-mavx512f], [libc_cv_cc_avx512=$libc_cv_asm_avx512dq], [libc_cv_cc_avx512=no])
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6c4009 |
])
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6c4009 |
if test $libc_cv_cc_avx512 = yes; then
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6c4009 |
AC_DEFINE(HAVE_AVX512_SUPPORT)
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6c4009 |
fi
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6c4009 |
LIBC_CONFIG_VAR([config-cflags-avx512], [$libc_cv_cc_avx512])
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6c4009 |
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6c4009 |
dnl Check whether asm supports Intel MPX
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6c4009 |
AC_CACHE_CHECK(for Intel MPX support, libc_cv_asm_mpx, [dnl
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6c4009 |
cat > conftest.s <<\EOF
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6c4009 |
bndmov %bnd0,(%rsp)
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6c4009 |
EOF
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6c4009 |
if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then
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6c4009 |
libc_cv_asm_mpx=yes
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6c4009 |
else
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6c4009 |
libc_cv_asm_mpx=no
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6c4009 |
fi
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6c4009 |
rm -f conftest*])
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6c4009 |
if test $libc_cv_asm_mpx = yes; then
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6c4009 |
AC_DEFINE(HAVE_MPX_SUPPORT)
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6c4009 |
fi
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6c4009 |
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6c4009 |
if test x"$build_mathvec" = xnotset; then
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6c4009 |
build_mathvec=yes
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6c4009 |
fi
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6c4009 |
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6c4009 |
dnl Check if linker supports static PIE with the fix for
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6c4009 |
dnl
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6c4009 |
dnl https://sourceware.org/bugzilla/show_bug.cgi?id=21782
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6c4009 |
dnl
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6c4009 |
if test "$static_pie" = yes; then
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6c4009 |
AC_CACHE_CHECK(for linker static PIE support, libc_cv_ld_static_pie, [dnl
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6c4009 |
cat > conftest.s <<\EOF
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6c4009 |
.text
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6c4009 |
.global _start
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6c4009 |
.weak foo
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6c4009 |
_start:
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6c4009 |
leaq foo(%rip), %rax
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6c4009 |
EOF
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6c4009 |
libc_cv_pie_option="-Wl,-pie"
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|
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6c4009 |
if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostartfiles -nostdlib $no_ssp $libc_cv_pie_option -o conftest conftest.s 1>&AS_MESSAGE_LOG_FD); then
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6c4009 |
libc_cv_ld_static_pie=yes
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Packit |
6c4009 |
else
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Packit |
6c4009 |
libc_cv_ld_static_pie=no
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|
Packit |
6c4009 |
fi
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Packit |
6c4009 |
rm -f conftest*])
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Packit |
6c4009 |
if test "$libc_cv_ld_static_pie" != yes; then
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|
Packit |
6c4009 |
AC_MSG_ERROR([linker support for static PIE needed])
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Packit |
6c4009 |
fi
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Packit |
6c4009 |
fi
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Packit |
6c4009 |
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Packit |
6c4009 |
dnl It is always possible to access static and hidden symbols in an
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6c4009 |
dnl position independent way.
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|
Packit |
6c4009 |
AC_DEFINE(PI_STATIC_AND_HIDDEN)
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6c4009 |
|
|
Packit |
6c4009 |
test -n "$critic_missing" && AC_MSG_ERROR([
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|
Packit |
6c4009 |
*** $critic_missing])
|