# 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 <&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 $? "gcc must provide the header" "$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" { $as_echo "$as_me:${as_lineno-$LINENO}: checking for Intel MPX support" >&5 $as_echo_n "checking for Intel MPX support... " >&6; } if ${libc_cv_asm_mpx+:} false; then : $as_echo_n "(cached) " >&6 else cat > conftest.s <<\EOF bndmov %bnd0,(%esp) EOF if { ac_try='${CC-cc} -c $ASFLAGS conftest.s 1>&5' { { eval echo "\"\$as_me\":${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_asm_mpx=yes else libc_cv_asm_mpx=no fi rm -f conftest* fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_asm_mpx" >&5 $as_echo "$libc_cv_asm_mpx" >&6; } if test $libc_cv_asm_mpx == yes; then $as_echo "#define HAVE_MPX_SUPPORT 1" >>confdefs.h fi { $as_echo "$as_me:${as_lineno-$LINENO}: checking for AVX2 support" >&5 $as_echo_n "checking for AVX2 support... " >&6; } if ${libc_cv_cc_avx2+:} false; then : $as_echo_n "(cached) " >&6 else if { ac_try='${CC-cc} -mavx2 -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_avx2=yes else libc_cv_cc_avx2=no fi fi { $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_cc_avx2" >&5 $as_echo "$libc_cv_cc_avx2" >&6; } if test $libc_cv_cc_avx2 = yes; then $as_echo "#define HAVE_AVX2_SUPPORT 1" >>confdefs.h fi config_vars="$config_vars config-cflags-avx2 = $libc_cv_cc_avx2" $as_echo "#define USE_REGPARMS 1" >>confdefs.h $as_echo "#define PI_STATIC_AND_HIDDEN 1" >>confdefs.h