-
-# ac_fn_c_check_header_compile LINENO HEADER VAR INCLUDES
-# -------------------------------------------------------
-# Tests whether HEADER exists and can be compiled using the include files in
-# INCLUDES, setting the cache variable VAR accordingly.
-ac_fn_c_check_header_compile ()
-{
- as_lineno=${as_lineno-"$1"} as_lineno_stack=as_lineno_stack=$as_lineno_stack
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for $2" >&5
-$as_echo_n "checking for $2... " >&6; }
-if eval \${$3+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-$4
-#include <$2>
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
- eval "$3=yes"
-else
- eval "$3=no"
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-eval ac_res=\$$3
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
-$as_echo "$ac_res" >&6; }
- eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno
-
-} # ac_fn_c_check_header_compile
-# This file is generated from configure.in by Autoconf. DO NOT EDIT!
+# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
# Local configure fragment for sysdeps/x86_64.
-
-ac_fn_c_check_header_compile "$LINENO" "cpuid.h" "ac_cv_header_cpuid_h" "/* No default includes. */
-"
-if test "x$ac_cv_header_cpuid_h" = xyes; then :
-
-else
- as_fn_error $? "gcc must provide the <cpuid.h> header" "$LINENO" 5
-fi
-
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for SSE4 support" >&5
-$as_echo_n "checking for SSE4 support... " >&6; }
-if ${libc_cv_cc_sse4+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if { ac_try='${CC-cc} -msse4 -xc /dev/null -S -o /dev/null'
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking -mprefer-vector-width=128" >&5
+printf %s "checking -mprefer-vector-width=128... " >&6; }
+if test ${libc_cv_cc_mprefer_vector_width+y}
+then :
+ printf %s "(cached) " >&6
+else $as_nop
+ if { ac_try='${CC-cc} -mprefer-vector-width=128 -xc /dev/null -S -o /dev/null'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; }; then :
- libc_cv_cc_sse4=yes
-else
- libc_cv_cc_sse4=no
+ printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }
+then :
+ libc_cv_cc_mprefer_vector_width=yes
+else $as_nop
+ libc_cv_cc_mprefer_vector_width=no
fi
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_sse4" >&5
-$as_echo "$libc_cv_cc_sse4" >&6; }
-if test $libc_cv_cc_sse4 = yes; then
- $as_echo "#define HAVE_SSE4_SUPPORT 1" >>confdefs.h
-
-fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_mprefer_vector_width" >&5
+printf "%s\n" "$libc_cv_cc_mprefer_vector_width" >&6; }
config_vars="$config_vars
-config-cflags-sse4 = $libc_cv_cc_sse4"
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for AVX support" >&5
-$as_echo_n "checking for AVX support... " >&6; }
-if ${libc_cv_cc_avx+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if { ac_try='${CC-cc} -mavx -xc /dev/null -S -o /dev/null'
+config-cflags-mprefer-vector-width = $libc_cv_cc_mprefer_vector_width"
+
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for linker that supports -z mark-plt" >&5
+printf %s "checking for linker that supports -z mark-plt... " >&6; }
+libc_linker_feature=no
+cat > conftest.c <<EOF
+int _start (void) { return 42; }
+EOF
+if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
+ -Wl,-z,mark-plt -nostdlib -nostartfiles
+ -fPIC -shared -o conftest.so conftest.c
+ 1>&5'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; }; then :
- libc_cv_cc_avx=yes
+ printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; }
+then
+ if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp -Wl,-z,mark-plt -nostdlib \
+ -nostartfiles -fPIC -shared -o conftest.so conftest.c 2>&1 \
+ | grep "warning: -z mark-plt ignored" > /dev/null 2>&1; then
+ true
+ else
+ libc_linker_feature=yes
+ fi
+fi
+rm -f conftest*
+if test $libc_linker_feature = yes; then
+ libc_cv_z_mark_plt=yes
else
- libc_cv_cc_avx=no
-fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_avx" >&5
-$as_echo "$libc_cv_cc_avx" >&6; }
-if test $libc_cv_cc_avx = yes; then
- $as_echo "#define HAVE_AVX_SUPPORT 1" >>confdefs.h
-
+ libc_cv_z_mark_plt=no
fi
+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_linker_feature" >&5
+printf "%s\n" "$libc_linker_feature" >&6; }
config_vars="$config_vars
-config-cflags-avx = $libc_cv_cc_avx"
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for AVX encoding of SSE instructions" >&5
-$as_echo_n "checking for AVX encoding of SSE instructions... " >&6; }
-if ${libc_cv_cc_sse2avx+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if { ac_try='${CC-cc} -msse2avx -xc /dev/null -S -o /dev/null'
+have-z-mark-plt = $libc_cv_z_mark_plt"
+
+if test x"$build_mathvec" = xnotset; then
+ build_mathvec=yes
+fi
+
+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 $ac_try) 2>&5
ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; }; then :
- libc_cv_cc_sse2avx=yes
-else
- libc_cv_cc_sse2avx=no
-fi
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_sse2avx" >&5
-$as_echo "$libc_cv_cc_sse2avx" >&6; }
-if test $libc_cv_cc_sse2avx = yes; then
- $as_echo "#define HAVE_SSE2AVX_SUPPORT 1" >>confdefs.h
-
-fi
-config_vars="$config_vars
-config-cflags-sse2avx = $libc_cv_cc_sse2avx"
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for FMA4 support" >&5
-$as_echo_n "checking for FMA4 support... " >&6; }
-if ${libc_cv_cc_fma4+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if { ac_try='${CC-cc} -mfma4 -xc /dev/null -S -o /dev/null'
+ 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 $ac_try) 2>&5
ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; }; then :
- libc_cv_cc_fma4=yes
-else
- libc_cv_cc_fma4=no
-fi
-
+ printf "%s\n" "$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
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_fma4" >&5
-$as_echo "$libc_cv_cc_fma4" >&6; }
-if test $libc_cv_cc_fma4 = yes; then
- $as_echo "#define HAVE_FMA4_SUPPORT 1" >>confdefs.h
-
+{ printf "%s\n" "$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" "$LINENO" 5
+ fi
fi
-config_vars="$config_vars
-have-mfma4 = $libc_cv_cc_fma4"
+if test $enable_cet = yes; then
+ printf "%s\n" "#define DEFAULT_DL_X86_CET_CONTROL cet_elf_property" >>confdefs.h
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for -mno-vzeroupper support" >&5
-$as_echo_n "checking for -mno-vzeroupper support... " >&6; }
-if ${libc_cv_cc_novzeroupper+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if { ac_try='${CC-cc} -mno-vzeroupper -xc /dev/null -S -o /dev/null'
- { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
- (eval $ac_try) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; }; then :
- libc_cv_cc_novzeroupper=yes
-else
- libc_cv_cc_novzeroupper=no
-fi
+elif test $enable_cet = permissive; then
+ printf "%s\n" "#define DEFAULT_DL_X86_CET_CONTROL cet_permissive" >>confdefs.h
fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_novzeroupper" >&5
-$as_echo "$libc_cv_cc_novzeroupper" >&6; }
config_vars="$config_vars
-config-cflags-novzeroupper = $libc_cv_cc_novzeroupper"
+enable-cet = $enable_cet"
-$as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h
+test -n "$critic_missing" && as_fn_error $? "
+*** $critic_missing" "$LINENO" 5
-# work around problem with autoconf and empty lines at the end of files
projects / platform / upstream / glibc.git / blobdiff