diff -up kdelibs-4.7.2/kjs/wtf/Platform.h.me kdelibs-4.7.2/kjs/wtf/Platform.h
--- kdelibs-4.7.2/kjs/wtf/Platform.h.me 2011-12-06 10:10:08.372356038 -0500
+++ kdelibs-4.7.2/kjs/wtf/Platform.h 2011-12-06 10:48:51.962357831 -0500
@@ -97,6 +97,18 @@
/* CPU */
+/* PLATFORM(S390X) - S390X 64-bit */
+#if defined(__s390x__)
+#define WTF_PLATFORM_S390X 1
+#define WTF_PLATFORM_BIG_ENDIAN 1
+#endif
+
+/* PLATFORM(S390) - S390 32-bit */
+#if defined(__s390__)
+#define WTF_PLATFORM_S390 1
+#define WTF_PLATFORM_BIG_ENDIAN 1
+#endif
+
/* PLATFORM(PPC) */
#if defined(__ppc__) \
|| defined(__PPC__) \