modules = frida-gum frida-core frida-python frida-node frida-tools

all $(MAKECMDGOALS):
	@build_os=$$(releng/detect-os.sh); \
	$(MAKE) -f Makefile.$$build_os.mk $(MAKECMDGOALS)

git-submodules:
	@if [ ! -f frida-core/meson.build ]; then \
		git submodule init; \
		git submodule update --init --recursive; \
	fi
-include git-submodules

define make-update-submodule-stamp
$1-update-submodule-stamp: git-submodules
	@mkdir -p build
	@cd $1 \
		&& git log -1 --format=%H > ../build/.$1-submodule-stamp.tmp \
		&& git status >> ../build/.$1-submodule-stamp.tmp \
		&& git diff >> ../build/.$1-submodule-stamp.tmp
	@if [ -f build/.$1-submodule-stamp ]; then \
		if cmp -s build/.$1-submodule-stamp build/.$1-submodule-stamp.tmp; then \
			rm build/.$1-submodule-stamp.tmp; \
		else \
			mv build/.$1-submodule-stamp.tmp build/.$1-submodule-stamp; \
		fi \
	else \
		mv build/.$1-submodule-stamp.tmp build/.$1-submodule-stamp; \
	fi
endef
$(foreach m,$(modules),$(eval $(call make-update-submodule-stamp,$m)))
git-submodule-stamps: $(foreach m,$(modules),$m-update-submodule-stamp)
-include git-submodule-stamps

.PHONY: all $(MAKECMDGOALS)