configure.ac: fix check for net/if.h on osx

diff --git a/configure.ac b/configure.ac
index 072ac341b8c80fefa221315e63807d4ae826762e..d3d5517798c2c9f3fc8349ba4783fd7ab3a25fe7 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -754,7 +754,12 @@ AC_SUBST(LIBPTHREAD)
 
 dnl Check for headers
 dnl  POSIX
-AC_CHECK_HEADERS([arpa/inet.h net/if.h pthread.h search.h syslog.h sys/shm.h])
+AC_CHECK_HEADERS([arpa/inet.h pthread.h search.h syslog.h sys/shm.h sys/socket.h])
+AC_CHECK_HEADERS([net/if.h], [], [],
+[
+#include <sys/types.h>
+#include <sys/socket.h>
+])
 dnl  BSD
 AC_CHECK_HEADERS([netinet/udplite.h sys/param.h sys/mount.h])
 dnl  GNU/Linux