compile on alpine

apps/backend/backend_socket.c

@@ -56,6 +56,7 @@
 #include <sys/ucred.h>
 #endif
 #define __USE_GNU
+#define _GNU_SOURCE /* for ucred */
 #include <sys/socket.h>
 #include <sys/param.h>
 #include <sys/types.h>

lib/clixon/clixon.h.in

@@ -46,6 +46,8 @@
 #include <sys/socket.h>
 #include <net/if.h>
 #include <netinet/in.h>
+#include <sys/time.h> /* gettimeofday */
+#include <sys/types.h>
 
 /*
  * CLIXON version macros

util/clixon_util_xml.c

@@ -49,6 +49,7 @@
 #include <stdint.h>
 #include <syslog.h>
 #include <assert.h>
+#include <sys/time.h>
 
 /* cligen */
 #include <cligen/cligen.h>