| |
| # 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; ${as_lineno_stack:+:} unset as_lineno |
| |
| } # ac_fn_c_check_header_compile |
| # This file is generated from configure.ac by Autoconf. DO NOT EDIT! |
| # Local configure fragment for sysdeps/i386. |
| |
| # We no longer support i386 since it lacks the atomic instructions |
| # required to implement NPTL threading. |
| if test "$config_machine" = i386; then |
| as_fn_error $? " |
| *** ERROR: Support for i386 is deprecated. |
| *** Please use host i786, i686, i585 or i486. |
| *** For example: /src/glibc/configure --host=i686-pc-linux-gnu ...\"" "$LINENO" 5 |
| fi |
| |
| # The GNU C Library can't be built for i386. There are several reasons for |
| # this restriction. The primary reason is that i386 lacks the atomic |
| # operations required to support the current NPTL implementation. While it is |
| # possible that such atomic operations could be emulated in the kernel to date |
| # no such work has been done to enable this. Even with NPTL disabled you still |
| # have no atomic.h implementation. Given the declining use of i386 we disable |
| # support for building with `-march=i386' or `-mcpu=i386.' We don't explicitly |
| # check for i386, instead we make sure the compiler has support for inlining |
| # the builtin __sync_val_compare_and_swap. If it does then we should have no |
| # problem building for i386. |
| { $as_echo "$as_me:${as_lineno-$LINENO}: checking for compiler support of inlined builtin function __sync_val_compare_and_swap" >&5 |
| $as_echo_n "checking for compiler support of inlined builtin function __sync_val_compare_and_swap... " >&6; } |
| libc_compiler_builtin_inlined=no |
| cat > conftest.c <<EOF |
| int _start (void) { int a, b, c; __sync_val_compare_and_swap (&a, b, c); return 0; } |
| EOF |
| if ! { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS |
| -O0 -nostdlib -nostartfiles |
| -S conftest.c -o - | fgrep "__sync_val_compare_and_swap" |
| 1>&5' |
| { { eval echo "\"\$as_me\":${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_compiler_builtin_inlined=yes |
| fi |
| rm -f conftest* |
| if test $libc_compiler_builtin_inlined = yes; then |
| libc_cv_unsupported_i386=no |
| else |
| as_fn_error $? " |
| *** Building with -march=i386/-mcpu=i386 is not supported. |
| *** Please use host i786, i686, i586, or i486. |
| *** For example: /source/glibc/configure CFLAGS='-O2 -march=i686' ..." "$LINENO" 5 |
| fi |
| { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_compiler_builtin_inlined" >&5 |
| $as_echo "$libc_compiler_builtin_inlined" >&6; } |
| |
| |
| 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' |
| { { 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 |
| 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 |
| $as_echo "#define HAVE_SSE4_SUPPORT 1" >>confdefs.h |
| |
| fi |
| config_vars="$config_vars |
| config-cflags-sse4 = $libc_cv_cc_sse4" |
| |
| { $as_echo "$as_me:${as_lineno-$LINENO}: checking for assembler -mtune=i686 support" >&5 |
| $as_echo_n "checking for assembler -mtune=i686 support... " >&6; } |
| if ${libc_cv_as_i686+:} false; then : |
| $as_echo_n "(cached) " >&6 |
| else |
| if { ac_try='${CC-cc} -Wa,-mtune=i686 -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_as_i686=yes |
| else |
| libc_cv_as_i686=no |
| fi |
| |
| fi |
| { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_as_i686" >&5 |
| $as_echo "$libc_cv_as_i686" >&6; } |
| config_vars="$config_vars |
| config-asflags-i686 = $libc_cv_as_i686" |
| |
| { $as_echo "$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' |
| { { 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 |
| 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 |
| $as_echo "#define HAVE_AVX_SUPPORT 1" >>confdefs.h |
| |
| fi |
| config_vars="$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' |
| { { 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' |
| { { 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 |
| |
| 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 |
| $as_echo "#define HAVE_FMA4_SUPPORT 1" >>confdefs.h |
| |
| fi |
| config_vars="$config_vars |
| have-mfma4 = $libc_cv_cc_fma4" |
| |
| { $as_echo "$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 |
| |
| 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" |
| |
| $as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h |
| |