diff -aur lua-5.2.0.orig/Makefile lua-5.2.0/Makefile
--- lua-5.2.0.orig/Makefile	2011-11-16 00:38:12.000000000 +0100
+++ lua-5.2.0/Makefile	2012-03-14 09:00:52.823998608 +0100
@@ -10,7 +10,7 @@
 # so take care if INSTALL_TOP is not an absolute path. See the local target.
 # You may want to make INSTALL_LMOD and INSTALL_CMOD consistent with
 # LUA_ROOT, LUA_LDIR, and LUA_CDIR in luaconf.h.
-INSTALL_TOP= /usr/local
+INSTALL_TOP= /usr
 INSTALL_BIN= $(INSTALL_TOP)/bin
 INSTALL_INC= $(INSTALL_TOP)/include
 INSTALL_LIB= $(INSTALL_TOP)/lib
@@ -41,7 +41,7 @@
 # What to install.
 TO_BIN= lua luac
 TO_INC= lua.h luaconf.h lualib.h lauxlib.h lua.hpp
-TO_LIB= liblua.a
+TO_LIB= liblua.a liblua.so.5.2
 TO_MAN= lua.1 luac.1
 
 # Lua version and release.
@@ -63,6 +63,7 @@
 	cd src && $(INSTALL_DATA) $(TO_INC) $(INSTALL_INC)
 	cd src && $(INSTALL_DATA) $(TO_LIB) $(INSTALL_LIB)
 	cd doc && $(INSTALL_DATA) $(TO_MAN) $(INSTALL_MAN)
+	ln -s liblua.so.5.2 $(INSTALL_LIB)/liblua.so
 
 uninstall:
 	cd src && cd $(INSTALL_BIN) && $(RM) $(TO_BIN)
@@ -103,10 +104,14 @@
 
 # echo pkg-config data
 pc:
-	@echo "version=$R"
 	@echo "prefix=$(INSTALL_TOP)"
 	@echo "libdir=$(INSTALL_LIB)"
 	@echo "includedir=$(INSTALL_INC)"
+	@echo "Name: Lua"
+	@echo "Description: An Extensible Extension Language"
+	@echo "Version: $R"
+	@echo "Libs: -L$(INSTALL_LIB) -llua -lm"
+	@echo "Cflags: -I$(INSTALL_INC)"
 
 # list targets that do not create files (but not all makes understand .PHONY)
 .PHONY: all $(PLATS) clean test install local none dummy echo pecho lecho
diff -aur lua-5.2.0.orig/src/Makefile lua-5.2.0/src/Makefile
--- lua-5.2.0.orig/src/Makefile	2011-09-19 14:45:14.000000000 +0200
+++ lua-5.2.0/src/Makefile	2012-03-14 08:41:50.374000136 +0100
@@ -7,7 +7,8 @@
 PLAT= none
 
 CC= gcc
-CFLAGS= -O2 -Wall -DLUA_COMPAT_ALL $(SYSCFLAGS) $(MYCFLAGS)
+CFLAGS ?= -O2 -Wall
+CFLAGS += -DLUA_COMPAT_ALL $(SYSCFLAGS) $(MYCFLAGS)
 LDFLAGS= $(SYSLDFLAGS) $(MYLDFLAGS)
 LIBS= -lm $(SYSLIBS) $(MYLIBS)
 
@@ -29,6 +30,7 @@
 PLATS= aix ansi bsd freebsd generic linux macosx mingw posix solaris
 
 LUA_A=	liblua.a
+LUA_SO= liblua.so
 CORE_O=	lapi.o lcode.o lctype.o ldebug.o ldo.o ldump.o lfunc.o lgc.o llex.o \
 	lmem.o lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o \
 	ltm.o lundump.o lvm.o lzio.o
@@ -43,7 +45,7 @@
 LUAC_O=	luac.o
 
 ALL_O= $(BASE_O) $(LUA_O) $(LUAC_O)
-ALL_T= $(LUA_A) $(LUA_T) $(LUAC_T)
+ALL_T= $(LUA_A) $(LUA_SO) $(LUA_T) $(LUAC_T)
 ALL_A= $(LUA_A)
 
 # Targets start here.
@@ -59,6 +61,10 @@
 	$(AR) $@ $?
 	$(RANLIB) $@
 
+$(LUA_SO): $(CORE_O) $(LIB_O)
+	$(CC) -shared -Wl,-soname,liblua.so -o $@.5.2 $? $(MYLDFLAGS)
+	ln -s $@.5.2 $@
+
 $(LUA_T): $(LUA_O) $(LUA_A)
 	$(CC) -o $@ $(LDFLAGS) $(LUA_O) $(LUA_A) $(LIBS)
 
diff -aur lua-5.2.0.orig/src/luaconf.h lua-5.2.0/src/luaconf.h
--- lua-5.2.0.orig/src/luaconf.h	2011-12-06 17:58:36.000000000 +0100
+++ lua-5.2.0/src/luaconf.h	2012-03-14 08:42:10.370999861 +0100
@@ -100,7 +100,7 @@
 #else			/* }{ */
 
 #define LUA_VDIR	LUA_VERSION_MAJOR "." LUA_VERSION_MINOR "/"
-#define LUA_ROOT	"/usr/local/"
+#define LUA_ROOT	"/usr/"
 #define LUA_LDIR	LUA_ROOT "share/lua/" LUA_VDIR
 #define LUA_CDIR	LUA_ROOT "lib/lua/" LUA_VDIR
 #define LUA_PATH_DEFAULT  \