diff options
Diffstat (limited to 'pixman/configure.ac')
| -rw-r--r-- | pixman/configure.ac | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/pixman/configure.ac b/pixman/configure.ac index 632797241..0339494b6 100644 --- a/pixman/configure.ac +++ b/pixman/configure.ac @@ -1061,6 +1061,24 @@ fi AC_MSG_RESULT($support_for_builtin_clz) +dnl ===================================== +dnl GCC vector extensions + +support_for_gcc_vector_extensions=no + +AC_MSG_CHECKING(for GCC vector extensions) +AC_LINK_IFELSE([AC_LANG_SOURCE([[ +unsigned int __attribute__ ((vector_size(16))) e, a, b; +int main (void) { e = a - ((b << 27) + (b >> (32 - 27))) + 1; return e[0]; } +]])], support_for_gcc_vector_extensions=yes) + +if test x$support_for_gcc_vector_extensions = xyes; then + AC_DEFINE([HAVE_GCC_VECTOR_EXTENSIONS], [], + [Whether the compiler supports GCC vector extensions]) +fi + +AC_MSG_RESULT($support_for_gcc_vector_extensions) + dnl ================== dnl libpng |