[PATCH] ccan: fix HAVE_BSWAP_64 for autoconf.
Rusty Russell
rusty at rustcorp.com.au
Tue Apr 2 00:30:01 MDT 2013
Autoconf defines HAVE_BSWAP_64_DECL, we want HAVE_BSWAP_64.
Signed-off-by: Rusty Russell <rusty at rustcorp.com.au>
---
Someone please review and apply. Thanks...
diff --git a/lib/ccan/libccan.m4 b/lib/ccan/libccan.m4
index 7b27c69..cda1353 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
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