diff options
Diffstat (limited to 'm4/tuklib_integer.m4')
| -rw-r--r-- | m4/tuklib_integer.m4 | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/m4/tuklib_integer.m4 b/m4/tuklib_integer.m4 index 2ab72a2f..c3c59fe3 100644 --- a/m4/tuklib_integer.m4 +++ b/m4/tuklib_integer.m4 @@ -58,6 +58,17 @@ if test "x$enable_unaligned_access" = xauto ; then i?86|x86_64|powerpc|powerpc64) enable_unaligned_access=yes ;; + arm*|aarch64*) + # On 32-bit and 64-bit ARM, GCC and Clang + # #define __ARM_FEATURE_UNALIGNED if + # unaligned access is supported. + AC_COMPILE_IFELSE([AC_LANG_SOURCE([ +#ifndef __ARM_FEATURE_UNALIGNED +compile error +#endif +int main(void) { return 0; } +])], [enable_unaligned_access=yes], [enable_unaligned_access=no]) + ;; *) enable_unaligned_access=no ;; |