diff -up lua-5.1.2/src/luaconf.h.template.in~ lua-5.1.2/src/luaconf.h.template.in
--- lua-5.1.2/src/luaconf.h.template.in~	2007-10-21 19:33:30.000000000 +0200
+++ lua-5.1.2/src/luaconf.h.template.in	2007-10-21 19:33:30.000000000 +0200
@@ -98,7 +98,12 @@
 
 /** autotools-patch **/
 #define LUA_LDIR	"%lua_datadir%/lua/5.1/"
-#define LUA_CDIR	"%lua_libdir%/lua/5.1/"
+#if defined __alpha__ || defined __ia64__ || defined __powerpc64__ || \
+    defined __s390x__ || defined __sparc64__ || defined __x86_64__
+#define LUA_CDIR	"/usr/lib64/lua/5.1/"
+#else
+#define LUA_CDIR	"/usr/lib/lua/5.1/"
+#endif
 /** autotools-patch **/
 
 #define LUA_PATH_DEFAULT  \
diff -up lua-5.1.2/etc/lua.pc.in~ lua-5.1.2/etc/lua.pc.in
--- lua-5.1.2/etc/lua.pc.in~	2007-11-26 09:35:47.000000000 +0100
+++ lua-5.1.2/etc/lua.pc.in	2007-11-26 09:35:47.000000000 +0100
@@ -2,12 +2,12 @@ V= 5.1
 R= 5.1.2
 prefix= @prefix@
 exec_prefix=${prefix}
-libdir=${exec_prefix}/lib
+libdir= @libdir@
 includedir=${prefix}/include
 
 Name: Lua
 Description: An Extensible Extension Language
 Version: ${R}
 Requires: 
-Libs: -L${libdir} -llua @LUA_LIBS@
+Libs: -llua @LUA_LIBS@
 Cflags: -I${includedir}