glibc/sysdeps/x86/configure
Siddhesh Poyarekar c6cb8783b5 configure: Use autoconf 2.71
Bump autoconf requirement to 2.71 to allow regenerating configure on
more recent distributions.  autoconf 2.71 has been in Fedora since F36
and is the current version in Debian stable (bookworm).  It appears to
be current in Gentoo as well.

All sysdeps configure and preconfigure scripts have also been
regenerated; all changes are trivial transformations that do not affect
functionality.

Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2023-07-17 10:08:10 -04:00

201 lines
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# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
# Local configure fragment for sysdeps/x86.
if test $enable_cet != no; then
# Check if CET can be enabled.
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether CET can be enabled" >&5
printf %s "checking whether CET can be enabled... " >&6; }
if test ${libc_cv_x86_cet_available+y}
then :
printf %s "(cached) " >&6
else $as_nop
cat > conftest.c <<EOF
#if !defined __CET__ || __CET__ != 3
# error CET isn't available.
#endif
EOF
if { ac_try='${CC-cc} -c $CFLAGS -fcf-protection -include cet.h conftest.c 1>&5'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; }; then
libc_cv_x86_cet_available=yes
else
libc_cv_x86_cet_available=no
fi
rm -rf conftest*
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_x86_cet_available" >&5
printf "%s\n" "$libc_cv_x86_cet_available" >&6; }
if test $libc_cv_x86_cet_available != yes; then
as_fn_error $? "$CC doesn't support CET" "$LINENO" 5
fi
fi
if test $enable_cet != no; then
# Check if assembler supports CET.
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether assembler supports CET" >&5
printf %s "checking whether assembler supports CET... " >&6; }
if test ${libc_cv_x86_cet_as+y}
then :
printf %s "(cached) " >&6
else $as_nop
cat > conftest.s <<EOF
incsspd %ecx
EOF
if { ac_try='${CC-cc} -c $CFLAGS conftest.s -o conftest.o 1>&5'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; }; then
libc_cv_x86_cet_as=yes
else
libc_cv_x86_cet_as=no
fi
rm -rf conftest*
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_x86_cet_as" >&5
printf "%s\n" "$libc_cv_x86_cet_as" >&6; }
if test $libc_cv_x86_cet_as = no; then
as_fn_error $? "$AS doesn't support CET" "$LINENO" 5
fi
fi
if test $enable_cet = yes; then
printf "%s\n" "#define DEFAULT_DL_X86_CET_CONTROL cet_elf_property" >>confdefs.h
elif test $enable_cet = permissive; then
printf "%s\n" "#define DEFAULT_DL_X86_CET_CONTROL cet_permissive" >>confdefs.h
fi
config_vars="$config_vars
enable-cet = $enable_cet"
# Check if linker supports x86 ISA level.
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for linker x86 ISA level support" >&5
printf %s "checking for linker x86 ISA level support... " >&6; }
if test ${libc_cv_include_x86_isa_level+y}
then :
printf %s "(cached) " >&6
else $as_nop
cat > conftest1.S <<EOF
#ifdef __LP64__
# define P2ALIGN 3
#else
# define P2ALIGN 2
#endif
.section ".note.gnu.property", "a"
.p2align P2ALIGN
.long 1f - 0f /* name length. */
.long 4f - 1f /* data length. */
/* NT_GNU_PROPERTY_TYPE_0 */
.long 5 /* note type. */
0:
.asciz "GNU" /* vendor name. */
1:
.p2align P2ALIGN
/* GNU_PROPERTY_X86_ISA_1_NEEDED */
.long 0xc0008002 /* pr_type. */
.long 3f - 2f /* pr_datasz. */
2:
.long 0x1
3:
.p2align P2ALIGN
4:
EOF
cat > conftest2.S <<EOF
#ifdef __LP64__
# define P2ALIGN 3
#else
# define P2ALIGN 2
#endif
.section ".note.gnu.property", "a"
.p2align P2ALIGN
.long 1f - 0f /* name length. */
.long 4f - 1f /* data length. */
/* NT_GNU_PROPERTY_TYPE_0 */
.long 5 /* note type. */
0:
.asciz "GNU" /* vendor name. */
1:
.p2align P2ALIGN
/* GNU_PROPERTY_X86_ISA_1_NEEDED */
.long 0xc0008002 /* pr_type. */
.long 3f - 2f /* pr_datasz. */
2:
.long 0x2
3:
.p2align P2ALIGN
4:
EOF
libc_cv_include_x86_isa_level=no
if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -nostartfiles -nostdlib -r -o conftest conftest1.S conftest2.S'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; }; then
count=`LC_ALL=C $READELF -n conftest | grep NT_GNU_PROPERTY_TYPE_0 | wc -l`
if test "$count" = 1; then
libc_cv_include_x86_isa_level=yes
fi
fi
rm -f conftest*
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_include_x86_isa_level" >&5
printf "%s\n" "$libc_cv_include_x86_isa_level" >&6; }
if test $libc_cv_include_x86_isa_level = yes; then
printf "%s\n" "#define INCLUDE_X86_ISA_LEVEL 1" >>confdefs.h
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for LAHF/SAHF instruction support" >&5
printf %s "checking for LAHF/SAHF instruction support... " >&6; }
if test ${libc_cv_have_x86_lahf_sahf+y}
then :
printf %s "(cached) " >&6
else $as_nop
libc_cv_have_x86_lahf_sahf=no
if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - -x c /dev/null'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; } | grep -qE '(-msahf\b|-march=x86-64-v)'; then
libc_cv_have_x86_lahf_sahf=yes
fi
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_lahf_sahf" >&5
printf "%s\n" "$libc_cv_have_x86_lahf_sahf" >&6; }
if test $libc_cv_have_x86_lahf_sahf = yes; then
printf "%s\n" "#define HAVE_X86_LAHF_SAHF 1" >>confdefs.h
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for MOVBE instruction support" >&5
printf %s "checking for MOVBE instruction support... " >&6; }
if test ${libc_cv_have_x86_movbe+y}
then :
printf %s "(cached) " >&6
else $as_nop
libc_cv_have_x86_movbe=no
if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS -fverbose-asm -S -o - -x c /dev/null'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; } | grep -qE '(-mmovbe\b|-march=x86-64-v([3-9]|[1-9][0-9]))'; then
libc_cv_have_x86_movbe=yes
fi
fi
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_have_x86_movbe" >&5
printf "%s\n" "$libc_cv_have_x86_movbe" >&6; }
if test $libc_cv_have_x86_movbe = yes; then
printf "%s\n" "#define HAVE_X86_MOVBE 1" >>confdefs.h
fi
fi
config_vars="$config_vars
enable-x86-isa-level = $libc_cv_include_x86_isa_level"
printf "%s\n" "#define SUPPORT_STATIC_PIE 1" >>confdefs.h