1 files changed, 76 insertions, 0 deletions
diff --git a/mrbgems/Makefile b/mrbgems/Makefile
new file mode 100644
index 000000000..c7d1f577d
--- /dev/null
+++ b/mrbgems/Makefile
@@ -0,0 +1,76 @@
+# makefile description.
+# add gems to the ruby library
+
+ifeq ($(strip $(MRUBY_ROOT)),)
+  MRUBY_ROOT := $(realpath ..)
+endif
+
+LIBR := ../lib/libmruby.a
+RM_F := rm -f
+CC_FLAGS := -Wall -Werror-implicit-function-declaration -g -O3 -MMD -I. -I./../include
+
+export CC = gcc
+export LL = gcc
+export AR = ar
+
+GENERATOR := $(MRUBY_ROOT)/mrbgems/generator
+ifeq ($(OS),Windows_NT)
+  GENERATOR_BIN := $(GENERATOR).exe
+else
+  GENERATOR_BIN := $(GENERATOR)
+endif
+GEM_INIT := gem_init
+GEM_MAKEFILE := g/Makefile
+GEM_MAKEFILE_LIST := g/MakefileGemList
+GEMDLIB := g/mrbgemtest.ctmp
+
+ifeq ($(strip $(ACTIVE_GEMS)),)
+  # the default file which contains the active GEMs
+  ACTIVE_GEMS = GEMS.active
+endif
+
+##############################
+# generic build targets, rules
+
+.PHONY : all
+all : all_gems $(GEM_INIT).a
+
+$(GEM_INIT).a : $(GEM_INIT).o
+	$(AR) rs gem_init.a $(GEM_INIT).o
+
+all_gems : $(GENERATOR_BIN)
+	@echo "Generate Gem List Makefile"
+	$(GENERATOR_BIN) makefile_list "$(ACTIVE_GEMS)" > $(GEM_MAKEFILE_LIST)
+	@echo "Generate Gem Makefile"
+	$(GENERATOR_BIN) makefile "$(ACTIVE_GEMS)" > $(GEM_MAKEFILE)
+	@echo "Build all gems"
+	$(MAKE) -C g MRUBY_ROOT='$(MRUBY_ROOT)' ACTIVE_GEMS="$(ACTIVE_GEMS)"
+
+$(GEM_INIT).c : $(GENERATOR_BIN)
+	@echo "Generate Gem driver"
+	$(GENERATOR_BIN) $(GEM_INIT) "$(ACTIVE_GEMS)" > $@
+
+$(GEM_INIT).o : $(GEM_INIT).c
+	@echo "Build the driver which initializes all gems"
+	$(CC) $(CC_FLAGS) -MMD -c $< -o $@
+
+# Generator
+
+$(GENERATOR_BIN) : $(GENERATOR).o
+	@echo "Build the generator which creates the driver and Gem Makefile"
+	$(LL) -o $@ $(CC_FLAGS) $<
+
+$(GENERATOR).o : $(GENERATOR).c
+	$(CC) $(CC_FLAGS) -MMD -c $< -o $@
+
+.PHONY : prepare-test
+prepare-test :
+	@$(MAKE) prepare-test -C g ACTIVE_GEMS="$(ACTIVE_GEMS)" MRUBY_ROOT='$(MRUBY_ROOT)'
+
+# clean driver and all gems
+.PHONY : clean
+clean : $(GENERATOR_BIN)
+	@echo "Cleanup Gems"
+	$(GENERATOR_BIN) makefile "$(ACTIVE_GEMS)" > $(GEM_MAKEFILE)
+	$(MAKE) clean -C g ACTIVE_GEMS="$(ACTIVE_GEMS)" MRUBY_ROOT='$(MRUBY_ROOT)'
+	-$(RM_F) $(GEM_INIT).c *.o *.d $(GENERATOR_BIN) $(GEM_MAKEFILE) $(GEM_MAKEFILE_LIST) gem_init.a