Index: php/ext/hash/hash_ripemd.c
===================================================================
--- php.orig/ext/hash/hash_ripemd.c
+++ php/ext/hash/hash_ripemd.c
@@ -172,6 +172,10 @@ static const unsigned char S[80] = {
 	11, 12, 14, 15, 14, 15,  9,  8,  9, 14,  5,  6,  8,  6,  5, 12,
 	 9, 15,  5, 11,  6,  8, 13, 12,  5, 12, 13, 14, 11,  8,  5,  6 };
 
+/* defined at illumos */
+#ifdef SS
+#undef SS
+#endif
 static const unsigned char SS[80] = {
 	 8,  9,  9, 11, 13, 15, 15,  5,  7,  7,  8, 11, 14, 14, 12,  6,
 	 9, 13, 15,  7, 12,  8,  9, 11,  7,  7, 12,  7,  6, 15, 13, 11,