Include sys/types.h for sys/socket.h, on FreeBSD and Darwin.

diff --git a/m4/getaddrinfo.m4 b/m4/getaddrinfo.m4
index f95bb1a..be44232 100644 (file)
--- a/m4/getaddrinfo.m4
+++ b/m4/getaddrinfo.m4
@@ -21,6 +21,12 @@ AC_DEFUN([gl_PREREQ_GETADDRINFO], [
   AC_REQUIRE([AC_GNU_SOURCE])
   AC_CHECK_HEADERS_ONCE(sys/socket.h netdb.h sys/types.h netinet/in.h)
   AC_CHECK_DECLS([getaddrinfo, freeaddrinfo, gai_strerror],,,[
+  /* sys/types.h is not needed according to POSIX, but the
+     sys/socket.h in i386-unknown-freebsd4.10 and
+     powerpc-apple-darwin5.5 required it. */
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
 #ifdef HAVE_SYS_SOCKET_H
 # include <sys/socket.h>
 #endif
@@ -29,6 +35,9 @@ AC_DEFUN([gl_PREREQ_GETADDRINFO], [
 #endif
 ])
   AC_CHECK_TYPES([struct addrinfo],,,[
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
 #ifdef HAVE_SYS_SOCKET_H
 # include <sys/socket.h>
 #endif