diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 45 |
1 files changed, 2 insertions, 43 deletions
diff --git a/configure b/configure index 56f18dfbc26..0aafd9c8c06 100755 --- a/configure +++ b/configure @@ -17344,46 +17344,6 @@ fi fi -# In order to detect at runtime, if the ARM CRC Extension is available, -# we will do "getauxval(AT_HWCAP) & HWCAP_CRC32". Check if we have -# everything we need for that. -for ac_func in getauxval -do : - ac_fn_c_check_func "$LINENO" "getauxval" "ac_cv_func_getauxval" -if test "x$ac_cv_func_getauxval" = xyes; then : - cat >>confdefs.h <<_ACEOF -#define HAVE_GETAUXVAL 1 -_ACEOF - -fi -done - -cat confdefs.h - <<_ACEOF >conftest.$ac_ext -/* end confdefs.h. */ - -#include <sys/auxv.h> -#include <asm/hwcap.h> - -int -main () -{ - -#ifndef AT_HWCAP -#error AT_HWCAP not defined -#endif -#ifndef HWCAP_CRC32 -#error HWCAP_CRC32 not defined -#endif - - ; - return 0; -} -_ACEOF -if ac_fn_c_try_compile "$LINENO"; then : - HAVE_HWCAP_CRC32=1 -fi -rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext - # Select CRC-32C implementation. # # If we are targeting a processor that has Intel SSE 4.2 instructions, we can @@ -17414,9 +17374,8 @@ if test x"$USE_SLICING_BY_8_CRC32C" = x"" && test x"$USE_SSE42_CRC32C" = x"" && if test x"$pgac_armv8_crc32c_intrinsics" = x"yes" && test x"$CFLAGS_ARMV8_CRC32C" = x""; then USE_ARMV8_CRC32C=1 else - # ARM CRC Extension, with runtime check? The getauxval() function and - # HWCAP_CRC32 are needed for the runtime check. - if test x"$pgac_armv8_crc32c_intrinsics" = x"yes" && test x"$ac_cv_func_getauxval" = x"yes" && test x"$HAVE_HWCAP_CRC32" = x"1"; then + # ARM CRC Extension, with runtime check? + if test x"$pgac_armv8_crc32c_intrinsics" = x"yes"; then USE_ARMV8_CRC32C_WITH_RUNTIME_CHECK=1 else # fall back to slicing-by-8 algorithm, which doesn't require any |