Cleaned up makefile.

Makefile

@@ -1,22 +1,14 @@
 # makefile for immutable table library for Lua
-# usage: make LUA=/path/to/lua
 
-LUAINC= $(LUA)/src
-LUALIB= $(LUA)/src
-LUABIN= $(LUA)/src
-LUASUFFIX= 
+LUA_DIR=/opt/local
+LUA_INC= $(LUA_DIR)/include
+LUA_BIN= $(LUA_DIR)/bin
+LUA= lua
 
-# these will probably work if Lua has been installed globally
-#LUA= /usr/local
-#LUAINC= $(LUA)/include
-#LUALIB= $(LUA)/lib
-#LUABIN= $(LUA)/bin
-
-# probably no need to change anything below here
 CC= gcc
 CFLAGS= $(INCS) $(WARN) -O2 $G
 WARN= -std=c11 -pedantic -Wall -Wextra
-INCS= -I$(LUAINC)
+INCS= -I$(LUA_INC)
 #MAKESO= $(CC) -shared
 MAKESO= $(CC) -bundle -undefined dynamic_lookup
 
@@ -29,7 +21,7 @@ TEST= tests.lua
 all: $T
 
 test: $T
-	$(LUABIN)/lua$(LUASUFFIX) $(TEST)
+	$(LUA_BIN)/$(LUA) $(TEST)
 
 o:	$(MYLIB).o
 
@@ -38,19 +30,9 @@ so:	$T
 $T:	$(OBJS)
 	$(MAKESO) -o $@ $(OBJS)
 
-$(OBJS): check-lua limmutable.c
+$(OBJS): limmutable.c
 
 clean:
-	rm -f $(OBJS) $T lua_path core core.*
-
-doc:
-	@echo "$(MYNAME) library:"
-	@fgrep '/**' $(MYLIB).c | cut -f2 -d/ | tr -d '*' | sort | column
-
-check-lua:
-	@if [ "$(LUA)" = "" ]; then \
-		echo "usage: make LUA=/path/to/lua"; \
-		exit 1; \
-	fi
+	rm -f $(OBJS) $T
 
 # eof