diff options
| -rw-r--r-- | configure.ac | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac index 6df4c1ce09..1454977179 100644 --- a/configure.ac +++ b/configure.ac @@ -535,13 +535,17 @@ AX_CHECK_COMPILE_FLAG([-march=armv8-a+crc+crypto],[[ARM_CRC_CXXFLAGS="-march=arm TEMP_CXXFLAGS="$CXXFLAGS" CXXFLAGS="$CXXFLAGS $ARM_CRC_CXXFLAGS" -AC_MSG_CHECKING(for ARM CRC32 intrinsics) +AC_MSG_CHECKING(for AArch64 CRC32 intrinsics) AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <arm_acle.h> #include <arm_neon.h> ]],[[ +#ifdef __aarch64__ __crc32cb(0, 0); __crc32ch(0, 0); __crc32cw(0, 0); __crc32cd(0, 0); vmull_p64(0, 0); +#else +#error "crc32c library does not support hardware acceleration on 32-bit ARM" +#endif ]])], [ AC_MSG_RESULT(yes); enable_arm_crc=yes; ], [ AC_MSG_RESULT(no)] |