Patch the two Makefile to also create liblua.so
Original patch by Allan McRae <allan@archlinux.org>
for Archlinux


diff -ruN lua-5.1.5/Makefile lua-5.1.5-new/Makefile
--- lua-5.1.5/Makefile	2012-02-10 10:50:23.000000000 +0100
+++ lua-5.1.5-new/Makefile	2014-09-10 20:17:28.913951433 +0200
@@ -43,7 +43,7 @@
 # What to install.
 TO_BIN= lua luac
 TO_INC= lua.h luaconf.h lualib.h lauxlib.h ../etc/lua.hpp
-TO_LIB= liblua.a
+TO_LIB= liblua.a liblua.so liblua.so.${V}
 TO_MAN= lua.1 luac.1
 
 # Lua version and release.
@@ -53,7 +53,7 @@
 all:	$(PLAT)
 
 $(PLATS) clean:
-	cd src && $(MAKE) $@
+	cd src && $(MAKE) $@ V=$(V) R=$(R)
 
 test:	dummy
 	src/lua test/hello.lua
diff -ruN lua-5.1.5/src/Makefile lua-5.1.5-new/src/Makefile
--- lua-5.1.5/src/Makefile	2012-02-13 21:41:22.000000000 +0100
+++ lua-5.1.5-new/src/Makefile	2014-09-10 20:16:09.982952152 +0200
@@ -8,7 +8,7 @@
 PLAT= none
 
 CC= gcc
-CFLAGS= -O2 -Wall $(MYCFLAGS)
+CFLAGS= -O2 -Wall $(MYCFLAGS) -fPIC
 AR= ar rcu
 RANLIB= ranlib
 RM= rm -f
@@ -34,9 +34,10 @@
 
 LUAC_T=	luac
 LUAC_O=	luac.o print.o
+LUA_SO= liblua.so
 
 ALL_O= $(CORE_O) $(LIB_O) $(LUA_O) $(LUAC_O)
-ALL_T= $(LUA_A) $(LUA_T) $(LUAC_T)
+ALL_T= $(LUA_A) $(LUA_T) $(LUAC_T) $(LUA_SO)
 ALL_A= $(LUA_A)
 
 default: $(PLAT)
@@ -57,6 +58,13 @@
 $(LUAC_T): $(LUAC_O) $(LUA_A)
 	$(CC) -o $@ $(MYLDFLAGS) $(LUAC_O) $(LUA_A) $(LIBS)
 
+$(LUA_SO): $(CORE_O) $(LIB_O)
+	$(CC) -shared -ldl -Wl,-soname,$(LUA_SO).$(V) -o $@.$(R) $? -lm $(MYLDFLAGS)
+	ln -sf $(LUA_SO).$(R) $(LUA_SO).$(V)
+	ln -sf $(LUA_SO).$(R) $(LUA_SO)
+
+
+
 clean:
 	$(RM) $(ALL_T) $(ALL_O)
 
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