diff options
Diffstat (limited to 'sysdeps/x86_64/configure.ac')
| -rw-r--r-- | sysdeps/x86_64/configure.ac | 46 |
1 files changed, 36 insertions, 10 deletions
diff --git a/sysdeps/x86_64/configure.ac b/sysdeps/x86_64/configure.ac index 37b1059af3..b7d2c0124f 100644 --- a/sysdeps/x86_64/configure.ac +++ b/sysdeps/x86_64/configure.ac @@ -1,25 +1,24 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. # Local configure fragment for sysdeps/x86_64. -dnl Check if asm supports AVX512. -AC_CACHE_CHECK(for AVX512 support in assembler, libc_cv_asm_avx512, [dnl +dnl Check if asm supports AVX512DQ. +AC_CACHE_CHECK(for AVX512DQ support in assembler, libc_cv_asm_avx512dq, [dnl cat > conftest.s <<\EOF - vmovdqu64 %zmm0, (%rsp) vandpd (%rax), %zmm6, %zmm1 EOF if AC_TRY_COMMAND(${CC-cc} -c $ASFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then - libc_cv_asm_avx512=yes + libc_cv_asm_avx512dq=yes else - libc_cv_asm_avx512=no + libc_cv_asm_avx512dq=no fi rm -f conftest*]) -if test $libc_cv_asm_avx512 == yes; then - AC_DEFINE(HAVE_AVX512_ASM_SUPPORT) +if test $libc_cv_asm_avx512dq = yes; then + AC_DEFINE(HAVE_AVX512DQ_ASM_SUPPORT) fi dnl Check if -mavx512f works. AC_CACHE_CHECK(for AVX512 support, libc_cv_cc_avx512, [dnl -LIBC_TRY_CC_OPTION([-mavx512f], [libc_cv_cc_avx512=$libc_cv_asm_avx512], [libc_cv_cc_avx512=no]) +LIBC_TRY_CC_OPTION([-mavx512f], [libc_cv_cc_avx512=$libc_cv_asm_avx512dq], [libc_cv_cc_avx512=no]) ]) if test $libc_cv_cc_avx512 = yes; then AC_DEFINE(HAVE_AVX512_SUPPORT) @@ -37,7 +36,7 @@ else libc_cv_asm_mpx=no fi rm -f conftest*]) -if test $libc_cv_asm_mpx == yes; then +if test $libc_cv_asm_mpx = yes; then AC_DEFINE(HAVE_MPX_SUPPORT) fi @@ -45,7 +44,34 @@ if test x"$build_mathvec" = xnotset; then build_mathvec=yes fi +dnl Check if linker supports static PIE with the fix for +dnl +dnl https://sourceware.org/bugzilla/show_bug.cgi?id=21782 +dnl +if test "$static_pie" = yes; then + AC_CACHE_CHECK(for linker static PIE support, libc_cv_ld_static_pie, [dnl +cat > conftest.s <<\EOF + .text + .global _start + .weak foo +_start: + leaq foo(%rip), %rax +EOF + libc_cv_pie_option="-Wl,-pie" + if AC_TRY_COMMAND(${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -nostartfiles -nostdlib $no_ssp $libc_cv_pie_option -o conftest conftest.s 1>&AS_MESSAGE_LOG_FD); then + libc_cv_ld_static_pie=yes + else + libc_cv_ld_static_pie=no + fi +rm -f conftest*]) + if test "$libc_cv_ld_static_pie" != yes; then + AC_MSG_ERROR([linker support for static PIE needed]) + fi +fi + dnl It is always possible to access static and hidden symbols in an dnl position independent way. AC_DEFINE(PI_STATIC_AND_HIDDEN) -# work around problem with autoconf and empty lines at the end of files + +test -n "$critic_missing" && AC_MSG_ERROR([ +*** $critic_missing]) |