Optimize Makefiles

mrbgems/Makefile

@@ -5,29 +5,37 @@ LIBR := ../lib/libmruby.a
 INIT := init_gems
 RM_F := rm -f
 CC_FLAGS := -Wall -Werror-implicit-function-declaration -g -O3 -MMD -I. -I./../include
-MMAKER := ./generator
-MMAKER_BIN := $(MMAKER)
+
 export CC = gcc
 export LL = gcc
 export AR = ar
 
+GENERATOR := ./generator
+ifeq ($(OS),Windows_NT)
+  GENERATOR_BIN := $(GENERATOR).exe
+else
+  GENERATOR_BIN := $(GENERATOR)
+endif
+GEM_MAKEFILE := g/Makefile
+GEMDLIB := g/mrbgemtest.ctmp
+
 ##############################
 # generic build targets, rules
 
 .PHONY : all
 all : $(INIT).o all_gems
 
-all_gems : g/Makefile
+all_gems : GEM_MAKEFILE
 	@echo "Build all gems"
 	$(MAKE) -C g
 
-g/Makefile : $(MMAKER_BIN)
+GEM_MAKEFILE : $(GENERATOR_BIN)
 	@echo "Generate Gem Makefile"
-	$(MMAKER_BIN) makefile > $@
+	$(GENERATOR_BIN) makefile > $@
 
-$(INIT).c : $(MMAKER_BIN)
+$(INIT).c : $(GENERATOR_BIN)
 	@echo "Generate Gem driver"
-	$(MMAKER_BIN) $(INIT) > $@
+	$(GENERATOR_BIN) $(INIT) > $@
 
 $(INIT).o : $(INIT).c
 	@echo "Build the driver which initializes all gems"
@@ -36,21 +44,22 @@ $(INIT).o : $(INIT).c
 
 # Generator
 
-$(MMAKER_BIN) : $(MMAKER).o
+$(GENERATOR_BIN) : $(GENERATOR).o
 	@echo "Build the generator which creates the driver and Gem Makefile"
 	$(LL) -o $@ $(CC_FLAGS) $<
 
-$(MMAKER).o : $(MMAKER).c
+$(GENERATOR).o : $(GENERATOR).c
 	$(CC) $(CC_FLAGS) -MMD -c $< -o $@
 
 .PHONY : prepare-test
-prepare-test :
+prepare-test : $(GEMDLIB)
+
+$(GEMDLIB) :
 	@$(MAKE) prepare-test -C g
 
 # clean driver and all gems
 .PHONY : clean
-clean : $(MMAKER_BIN)
+clean : GEM_MAKEFILE
 	@echo "Cleanup Gems"
-	$(MMAKER_BIN) makefile > g/Makefile
 	$(MAKE) clean -C g
-	-$(RM_F) $(INIT).c *.o *.d $(MMAKER_BIN) g/Makefile
+	-$(RM_F) $(INIT).c *.o *.d $(GENERATOR_BIN) GEM_MAKEFILE

mrbgems/generator.c

@@ -102,6 +102,10 @@ for_each_gem (char before[1024], char after[1024],
   puts(complete_line);
 }
 
+/*
+ * Gem Makefile Generator
+ *
+ */
 void
 make_gem_makefile()
 {
@@ -156,6 +160,10 @@ make_gem_makefile()
   for_each_gem("\t@$(MAKE) clean -C ", " $(MAKE_FLAGS)\n", "", "", "");
 }
 
+/*
+ * init_gems.c Generator
+ *
+ */
 void
 make_init_gems()
 {

test/Makefile

@@ -10,6 +10,8 @@ MLIB := $(TARGET).o
 CLIB := $(TARGET).c
 INIT := init_$(TARGET).c
 DLIB := $(TARGET).ctmp
+GEMDIR := ../mrbgems
+GEMDLIB := $(GEMDIR)/g/mrbgemtest.ctmp
 RLIB := $(TARGET).rbtmp
 DEPLIB := $(TARGET).d driver.d
 ASSLIB := $(BASEDIR)/assert.rb
@@ -42,14 +44,13 @@ endif
 
 # mruby compiler and test driver
 ifeq ($(OS),Windows_NT)
-MRBC = ../bin/mrbc.exe
-EXE := $(TARGET).exe
+  MRBC = ../bin/mrbc.exe
+  EXE := $(TARGET).exe
 else
-MRBC = ../bin/mrbc
-EXE := $(TARGET)
+  MRBC = ../bin/mrbc
+  EXE := $(TARGET)
 endif
 
-
 ##############################
 # generic build targets, rules
 
@@ -68,15 +69,18 @@ $(OBJS) : %.o : %.c
 	$(CC) $(ALL_CFLAGS) -MMD $(INCLUDES) -c $< -o $@
 
 # Compile C source from merged mruby source
-$(CLIB) : ../mrbgems/g/mrbgemtest.ctmp $(RLIB) $(MRBC) $(INIT)
-	$(MRBC) -Bmrbtest_irep -o$(DLIB) $(RLIB); $(CAT) $(INIT) $(DLIB) ../mrbgems/g/mrbgemtest.ctmp > $@
+$(CLIB) : $(DLIB) $(GEMDLIB) $(INIT)
+	$(CAT) $(INIT) $(DLIB) $(GEMDLIB) > $@
+
+$(DLIB) : $(RLIB) $(MRBC)
+	$(MRBC) -Bmrbtest_irep -o$@ $(RLIB)
 
 # merge mruby sources
 $(RLIB) : $(ASSLIB) $(MRBS)
 	$(CAT) $(ASSLIB) $(MRBS) > $@
 
-../mrbgems/g/mrbgemtest.ctmp :
-	@$(MAKE) prepare-test -C ../mrbgems
+$(GEMDLIB) :
+	@$(MAKE) prepare-test -C $(GEMDIR)
 
 # clean up
 .PHONY : clean