makefile-rec

SHELL:=/bin/bash
SRCDIR:=

define NEW_LINE


endef

export NEW_LINE

CXXFLAGS:= -pipe -std=c++14 $(CXX_OTHER_FLAGS) -c -fPIC

SOURCES:= $(shell find $(SOURCES_BASE_DIR)/$(SRCDIR) -maxdepth 1 -type f -name "*.cpp")
DEPENDENCIES:= $(patsubst $(SOURCES_BASE_DIR)/$(SRCDIR)%.cpp, $(OBJECTS_BASE_DIR)/$(SRCDIR)%.d, $(SOURCES))
OBJECTS:= $(patsubst %.d, %.o, $(DEPENDENCIES))
SOURCES_DIRS:= $(shell find $(SOURCES_BASE_DIR)/$(SRCDIR) -maxdepth 1 -mindepth 1 -type d)
OBJECTS_DIRS:= $(patsubst $(SOURCES_BASE_DIR)/$(SRCDIR)%, %/, $(SOURCES_DIRS))
OBJECTS_DIRS_MAKEFILES:= $(patsubst %, %makefile, $(OBJECTS_DIRS))

.PHONY: all
.PRECIOUS: $(DEPENDECIES) $(OBJECTS_DIRS_MAKEFILES)

all: $(OBJECTS_DIRS) $(OBJECTS)

%.d: makefile
	@echo "\
	$(shell sha1sum <<< "$@" | sed "s/  -//g") = \$$(shell (\$$(CXX) -MM \$$(CXXFLAGS) $(patsubst $(OBJECTS_BASE_DIR)/$(SRCDIR)%.d,$(SOURCES_BASE_DIR)/$(SRCDIR)%.cpp, $@) 2>/dev/null || echo \"$(patsubst $(OBJECTS_BASE_DIR)/$(SRCDIR)%.d,$(SOURCES_BASE_DIR)/$(SRCDIR)%.cpp, $@) FORCE\") | sed \"s/.*://g;s/\\\\\\\\//g\")$${NEW_LINE}\
	$(patsubst %.d,%.o, $@): \$$($(shell sha1sum <<< "$@" | sed "s/  -//g")) makefile$${NEW_LINE}\
		\$$(CXX) \$$(CXXFLAGS) \$$< -o $(patsubst %.d,%.o, $@)$${NEW_LINE}\
	" > $@

%/makefile: makefile
	mkdir -p $(dir $@)
	cp makefile $@

%/: FORCE | %/makefile
	@accesstime=`stat -c %Y $@` && \
	$(MAKE) -C $@ SRCDIR=$(SRCDIR)$(notdir $(patsubst %/, %, $@))/ OBJECTS_BASE_DIR=$(OBJECTS_BASE_DIR) SOURCES_BASE_DIR=$(SOURCES_BASE_DIR) CXX_OTHER_FLAGS="$(CXX_OTHER_FLAGS)" && \
	accesstime2=`stat -c %Y $@` && \
	if [ $$accesstime -ne $$accesstime2 ]; then \
		touch .; \
	fi

FORCE:

-include $(DEPENDENCIES)