################################################################################
# Contents: makefile with dependency generation                                #
#           26.05.2015                                                         #
#------------------------------------------------------------------------------#
#           makefile for cpp/c bins and libs                                   #
#           autor Philipp Schoenberger                                         #
#           ph.schoenberger@googlemail.com                                     #
################################################################################
LIBS = pthread boost_thread boost_system
TOP_DIR   = $(PWD)
SRC_FOLDER  = ./src
TEST_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
   CPPUTEST_LIB = $(CPPUTEST_BUILD)/lib

   # 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 = $(TOP_DIR)/build/app
# Sources
SRC_C    += $(wildcard $(SRC_FOLDER)/*.c)
SRC_CPP  += $(wildcard $(SRC_FOLDER)/*.cpp)
endif
SRC_H    += $(wildcard $(INCLUDE_DIR: % = %.h) $(SRC_FOLDER: % = %.h))
SRC_HPP  += $(wildcard $(INCLUDE_DIR: % = %.hpp) $(SRC_FOLDER: % = %.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_C   = $(patsubst %.c,   $(BUILD_DIR)/%.d, $(SRC_C))
DEPS_CPP = $(patsubst %.cpp, $(BUILD_DIR)/%.d, $(SRC_CPP))
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)
DEPS += $(DEPS_C)
DEPS += $(DEPS_CPP)
#DEPS+=$(DEPS_H)
#DEPS+=$(DEPS_HPP)

.DEFAULT: all

.PHONY: all test CPPUTEST CPPUTEST_COMPILE clean doc

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

doc:
	doxygen $(TOP_DIR)/doc/doxygenconfig

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

CPPUTEST: $(CPPUTEST_HOME) $(CPPUTEST_LIB)

$(CPPUTEST_LIB): CPPUTEST_COMPILE

CPPUTEST_COMPILE:
	mkdir $(CPPUTEST_BUILD) -p
	cd $(CPPUTEST_BUILD) && autoreconf .. -i
	cd $(CPPUTEST_BUILD) && ../configure
	cd $(CPPUTEST_BUILD) && $(MAKE)

$(BUILD_DIR) $(TEST_DIR):
	echo $(SRC_C)
	echo $(DEPS)
	$(Q)echo " [mk] $@"
	$(Q)mkdir -p $@/src $@/test $@/include

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)