less warnings

git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@908 ec53bebd-3082-4978-b11e-865c3cabbd6b

lib/roken/roken.h

@@ -43,8 +43,12 @@
 
 #include <stdlib.h>
 #include <string.h>
+#ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
+#endif
 
 #include "protos.h"
 
@@ -83,6 +87,10 @@ SigAction signal(int iSig, SigAction pAction); /* BSD compatible */
 #endif
 #endif
 
+#ifndef SIG_ERR
+#define SIG_ERR ((RETSIGTYPE (*)())-1)
+#endif
+
 #if !defined(HAVE_STRERROR) && !defined(strerror)
 char *strerror(int eno);
 #endif