1 files changed, 9 insertions, 1 deletions
diff --git a/aclocal.m4 b/aclocal.m4
index feb6baec58..ee698ab873 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -461,7 +461,15 @@ AC_TRY_RUN([
 #include <sys/ipc.h>
 #include <sys/sem.h>
 int main () {
-  union semun arg ;
+#if !defined(sun)
+  union semun arg;
+#else
+  union semun {
+    int val;
+    struct semid_ds *buf;
+    ushort *array;
+  } arg;
+#endif
   int id=semget(IPC_PRIVATE,1,IPC_CREAT|0400);
   if (id == -1)
     exit(1);