diff options
Diffstat (limited to 'lib/ccan/libccan.m4')
| -rw-r--r-- | lib/ccan/libccan.m4 | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/lib/ccan/libccan.m4 b/lib/ccan/libccan.m4 index 7b27c69b81..cda1353de6 100644 --- a/lib/ccan/libccan.m4 +++ b/lib/ccan/libccan.m4 @@ -346,4 +346,18 @@ if test x"$samba_cv_warn_unused_result" = xyes ; then AC_DEFINE(HAVE_WARN_UNUSED_RESULT, 1, [whether we have __attribute__((warn_unused_result))]) fi -AC_HAVE_DECL(bswap_64, [#include <byteswap.h>]) + +AC_CACHE_CHECK([whether we have bswap_64], + samba_cv_have_bswap_64, + [ + AC_LINK_IFELSE([AC_LANG_SOURCE( + [#include <byteswap.h> + int main(void) { return bswap_64(1) ? 0 : 1; } + ])], + samba_cv_have_bswap_64=yes) + ]) + +if test x"$samba_cv_have_bswap_64" = xyes ; then + AC_DEFINE(HAVE_BSWAP_64, 1, + [whether we have bswap_64]) +fi |