# Author Yannis Gerlach
# Hochschule Osnabrück
# 28.09.2020

# `make clean all` nicht mit -j verwenden! -> race condition im make file
# statdessen: `make clean; make all -j` verwenden

NAME = libmrbesen.so
NAMEINC = mrbesen
NAMETEST = test
CFLAGS = -fpic -std=c++17 -O2 -g -pipe -Wall -Wextra -Wno-unused-parameter -Wpedantic
CXX = g++
SRCF = src/
BUILDDIR = build/
INCF = inc/
TESTF = tests/
DEPF = $(BUILDDIR)deps/

INCLUDES = -I$(INCF)
LDFLAGS = 

SRCFILES = $(shell find $(SRCF) -name "*.cpp")
OBJFILES = $(patsubst $(SRCF)%, $(BUILDDIR)%, $(patsubst %.cpp, %.o, $(SRCFILES)))
DEPFILES = $(wildcard $(DEPF)*.d)

SOURCEDIRS = $(shell find $(SRCF) -type d -printf "%p/\n")
BUILDDIRS = $(patsubst $(SRCF)%, $(BUILDDIR)%, $(SOURCEDIRS))

INCLUDES += $(addprefix -I, $(SOURCEDIRS))

all: $(NAME) runtest

$(NAME): $(BUILDDIRS) $(DEPF) $(OBJFILES)
	@echo "Linking $@"
	@$(LD) -shared -o $@ $(filter %.o, $^)

$(BUILDDIR)%.o: $(SRCF)%.cpp
	@echo "Compiling: $@"
	@$(CXX) $(CFLAGS) $(INCLUDES) $< -MM -MT $@ > $(DEPF)$(subst /,_,$*).d
	@$(CXX) -c -o $@ $(CFLAGS) $(INCLUDES) $<

%/:
	mkdir -p $@

clean-depends:
	$(RM) -r $(DEPF)

clean:
	$(RM) -r $(NAME) $(BUILDDIR) $(NAMETEST)

$(NAMETEST): $(NAME) $(TESTF)*.cpp
	@echo "Compiling tests"
	@$(CXX) -o $@ $(filter-out %.so, $^) $(CFLAGS) $(INCLUDES) $(LDFLAGS) -L./ -lmrbesen

runtest: $(NAMETEST)
	@echo "Running tests"
	LD_LIBRARY_PATH=./:$(LD_LIBRARY_PATH) ./$<

install: $(NAME)
	cp -f ./$(NAME) /usr/lib/
	mkdir -p /usr/include/$(NAMEINC)/
	cp -rf $(INCF)* /usr/include/$(NAMEINC)/

uninstall:
	$(RM) -r /usr/lib/$(NAME) /usr/include/$(NAMEINC)/

.PHONY: clean all $(NAMETEST) clean-depends runtest install

include $(DEPFILES)