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| author | Matt Turner <mattst88@gmail.com> | 2012-05-15 16:32:08 -0400 |
|---|---|---|
| committer | Matt Turner <mattst88@gmail.com> | 2012-05-15 16:41:22 -0400 |
| commit | 55698584be93706794b181cbf595846da578e103 (patch) | |
| tree | dd05007fb4f676562f8b98985aafbe703ba42d69 | |
| parent | 3682b615154338f9754e7c1e046b42bb8ad584fa (diff) | |
configure.ac: Fail the ARM/iwMMXt test if not compiling with -march=iwmmxt
If not compiling with -march=iwmmxt, the configure test will still pass,
thinking that the __builtin_arm_* intrinsic is a function instead of
generating a single instruction. Since no linking is done, the configure
test doesn't catch this, and we get linking errors in the build.
| -rw-r--r-- | configure.ac | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 5ff78eb0..027a1680 100644 --- a/configure.ac +++ b/configure.ac @@ -619,6 +619,9 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ #ifndef __arm__ #error "IWMMXT is only available on ARM" #endif +#ifndef __IWMMXT__ +#error "IWMMXT not enabled (with -march=iwmmxt)" +#endif #if defined(__GNUC__) && (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 5)) #error "Need GCC >= 4.5 for IWMMXT intrinsics" #endif |