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# This Makefile automagically creates dependency files for .cpp source files.
# Rules for other file types can be added easily.
#
# In your primary Makefile, set a DEPENDENCIES variable containing your
# executable files (if they have according .cpp files) and additional object
# files and include Makefile.dependencies at the very end:
#
# DEPENDENCIES = mysource1 mysource2 mysource3 myobject1.o
# include Makefile.dependencies
#
# For further customization you can also set the variables DEPENDENCY_EXT,
# DEPENDENCY_DIR and NO_INCLUDE_DEPENDENCIES.
#
# To remove all temporary dependency files, run 'make clean'.
# You can still define your own rule for the target 'clean', if needed.
# Author: Matthias Geier, 2011, 2014
DEPENDENCY_EXT ?= dep
DEPENDENCY_DIR ?= .dep
BINARY_EXTENSIONS ?= "" .o
# don't include dependencies for those targets:
NO_INCLUDE_DEPENDENCIES += clean
DECORATED_DEPENDENCIES = $(DEPENDENCIES:%=$(DEPENDENCY_DIR)/%.$(DEPENDENCY_EXT))
DEPENDENCY_MESSAGE = @echo Dependency file \"$@\" updated
$(DEPENDENCY_DIR):
mkdir -p $(DEPENDENCY_DIR)
$(subst "",,$(BINARY_EXTENSIONS:%=$(DEPENDENCY_DIR)/\%%.$(DEPENDENCY_EXT))): %.cpp | $(DEPENDENCY_DIR)
$(RM) $@; $(CXX) -MM -MF $@ \
-MT "$(@:$(DEPENDENCY_DIR)/%.$(DEPENDENCY_EXT)=%) $@" \
$(CXXFLAGS) $(CPPFLAGS) $(TARGET_ARCH) $< > /dev/null
$(DEPENDENCY_MESSAGE)
# other file types (e.g. *.c) could be added like this:
#$(DEPENDENCY_DIR)/%.o.$(DEPENDENCY_EXT): %.c | $(DEPENDENCY_DIR)
# somehow generate dependency files ...
# filter additional dependency files from default rule:
%: %.cpp
$(LINK.cpp) $< $(filter %.o, $^) $(LOADLIBES) $(LDLIBS) -o $@
# include dependency files generated in the previous step
ifeq (,$(findstring $(MAKECMDGOALS), $(NO_INCLUDE_DEPENDENCIES)))
-include $(DECORATED_DEPENDENCIES)
endif
# If a rule for 'clean' already exists, it is not overwritten here!
# This merely adds a dependency on the target 'clean.dependencies':
clean: clean.dependencies
clean.dependencies:
$(RM) $(DECORATED_DEPENDENCIES)
rmdir $(DEPENDENCY_DIR) 2> /dev/null || true
.PHONY: clean clean.dependencies
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