################################################################################
# Contents: makefile with dependency generation                                #
#           26.05.2015                                                         #
#------------------------------------------------------------------------------#
#           makefile for cpp/c bins and libs                                   #
#           autor Philipp Schoenberger                                         #
#           ph.schoenberger@googlemail.com                                     #
################################################################################
LIBS = pthread
TOP_DIR   = $(PWD)
TEST_DIR = $(BUILD_DIR)/test
INCLUDE_DIR = -I . \
              -I ./include 

# comment this out if you want debug compile info
#Q=@

ifeq ($(MAKECMDGOALS),test)
   GCOV := --coverage
   CPPUTEST_HOME := $(TOP_DIR)/test/cpputest
   INCLUDE_DIR += -I$(CPPUTEST_HOME)/include -I.
   SUPRESS_WARNINGS := -Wno-write-strings
   CFLAGS_TEST := -DUNIT_TEST  $(GCOV) -include $(CPPUTEST_HOME)/include/CppUTest/MemoryLeakDetectorMallocMacros.h
   CXXFLAGS_TEST := -DUNIT_TEST -include $(CPPUTEST_HOME)/include/CppUTest/MemoryLeakDetectorNewMacros.h $(SUPRESS_WARNINGS)
   APP_PREFIX  := test_
   LIBS += CppUTest pthread gcov dl
   CPPUTEST_BUILD := $(CPPUTEST_HOME)/cpputest_build
   LIBS_TEST = -L $(CPPUTEST_BUILD)/lib/
   TEST_SRC_FOLDER = test
   BUILD_DIR = $(PWD)/build/test

   # Sources
   SRC_C   := $(wildcard $(TEST_SRC_FOLDER)/*.c)
   SRC_H   := $(wildcard $(TEST_SRC_FOLDER)/*.h)
   SRC_CPP  := $(wildcard $(TEST_SRC_FOLDER)/*.cpp)
   SRC_HPP  := $(wildcard $(TEST_SRC_FOLDER)/*.hpp)
else
BUILD_DIR = $(PWD)/build/app
# Sources
SRC_C   := $(wildcard *.c) 
SRC_CPP  := $(wildcard *.cpp)
endif
SRC_H   += $(wildcard *.h) $(wildcard include/*.h)
SRC_HPP  += $(wildcard *.hpp)

OUT_BINARY = $(APP_PREFIX)lwrserv

CC = g++
GLOBAL_FLAGS = -g -o2 -ansi -pedantic -DHAVE_SOCKLEN_T $(INCLUDE_DIR)
CFLAGS   = $(GLOBAL_FLAGS) $(CFLAGS_TEST)
CXXFLAGS = $(GLOBAL_FLAGS) $(CFLAGS_TEST)
CPPFLAGS = $(GLOBAL_FLAGS) $(CFLAGS_TEST)
LDFLAGS = $(patsubst %,-l%,$(LIBS)) $(CFLAGS_TEST) $(LIBS_TEST) 

# Objects
OBJS_C = $(patsubst %.c,$(BUILD_DIR)/%.o,$(SRC_C))
OBJS_CPP = $(patsubst %.cpp,$(BUILD_DIR)/%.o,$(SRC_CPP))


OBJS=$(patsubst %.o,%.o,$(OBJS_C) $(OBJS_CPP))

# Dependencies
DEPS_H = $(patsubst %.h,$(BUILD_DIR)/%.d,$(SRC_H))
DEPS_HPP = $(patsubst %.hpp,$(BUILD_DIR)/%.d,$(SRC_HPP))

DEPS=$(OBJS:%.o=%.d)
#DEPS+=$(DEPS_H)
#DEPS+=$(DEPS_HPP)

.DEFAULT: all

all: $(BUILD_DIR) $(BUILD_DIR)/$(OUT_BINARY)

test: CPPUTEST $(BUILD_DIR)/$(OUT_BINARY)  $(TEST_DIR)
	$(BUILD_DIR)/$(OUT_BINARY) -v

CPPUTEST: $(CPPUTEST_HOME)
	rm $(CPPUTEST_BUILD) -rf && mkdir $(CPPUTEST_BUILD) -p
	cd $(CPPUTEST_BUILD) && autoreconf .. -i
	cd $(CPPUTEST_BUILD) && ../configure
	cd $(CPPUTEST_BUILD) && $(MAKE)

$(BUILD_DIR) $(TEST_DIR):
	$(Q)echo " [mk] $@"
	$(Q)mkdir -p $@

clean:
	$(Q)echo " [rm] $(BUILD_DIR)"
	$(Q)rm -rf $(BUILD_DIR)

$(BUILD_DIR)/$(OUT_BINARY): $(BUILD_DIR) $(DEPS) $(DEP_LIBS) $(OBJS)
	$(Q)echo " [ld] $@"
	$(Q)( $(CC)  $(CFLAGS) $(OBJS) $(LDFLAGS)  -o $@ ) || exit 1

$(BUILD_DIR)/%.o : %.c $(BUILD_DIR)  $(TEST_DIR)
	$(Q)echo " [CC] $@"
	$(Q)( $(CC) -c $(CFLAGS) $(CPPFLAGS) $< -o $@ ) || exit 1

$(BUILD_DIR)/%.o : %.cpp $(BUILD_DIR)  $(TEST_DIR)
	$(Q)echo " [CXX] $@"
	$(Q)( $(CXX) -c $(CXXFLAGS) $(CPPFLAGS) $< -o $@ ) || exit 1

$(BUILD_DIR)/%.d: $(BUILD_DIR) $(TEST_DIR) %.c 
	$(Q)echo " [DEP] $@"
	$(Q)touch $@
	$(Q)echo -n "$@ $(patsubst %.d,%.o,$@):" >$@
	$(Q)$(CC) -M $(CFLAGS) $(filter %.cpp,$^ ) | sed 's:$*.o\:::' >> $@

$(BUILD_DIR)/%.d: $(BUILD_DIR) $(TEST_DIR) %.cpp 
	$(Q)echo " [DEP] $@"
	$(Q)touch $@
	$(Q)$(CC) -M $(filter-out -g -o0 -o1 -o2 ,$(CPPFLAGS)) $(filter %.cpp,$^) >> $@
	#$(Q)echo -n "$@ $(patsubst %.d,%.o,$@): " >$@

-include $(DEPS)