# Source version
ifndef OWLPS_VERSION
	OWLPS_VERSION := $(shell git describe 2>/dev/null || echo 'UNKNOWN_VERSION')
endif

# Installation directory
PREFIX=/usr/local
INSTALL_DIR= $(PREFIX)/bin
INSTALL_LIB= $(PREFIX)/lib
INSTALL_INC= $(PREFIX)/include
INSTALL_MAN= $(PREFIX)/share/man

# Compilation tools
ifeq "$(origin CC)" "default"
	COLORGCC := $(shell which colorgcc >/dev/null 2>&1 ; echo $$?)
	ifeq "$(COLORGCC)" "0"
		CC = colorgcc
	endif
endif
STRIP = strip -s

# Install/uninstall commands
RM = rm -f
CP = cp

# Target
TARGET=owlps-client
HEADER=

# Flags
LIBOWLPS_DIR = ../libowlps
LIBOWLPSCLIENT_DIR = ../libowlps-client
LIBOWLPSRESULTREADER_DIR = ../libowlps-resultreader
CFLAGS = -O2 -Wall -Wextra -Wstrict-prototypes \
	-I$(LIBOWLPS_DIR) -I$(LIBOWLPSCLIENT_DIR) \
	-I$(LIBOWLPSRESULTREADER_DIR)
#CFLAGS += -g -O0
DEPFLAGS = -MMD
XCFLAGS = $(CFLAGS) $(DEPFLAGS) $(WARN) $(HEADERS)
PICFLAG = -fPIC
OWLPSFLAGS = -D OWLPS_VERSION=\"$(OWLPS_VERSION)\"
OWLPSFLAGS += -D DEBUG
OWLPSFLAGS += -D ENABLE_RECEIVE_POSITION \
	-L$(LIBOWLPSRESULTREADER_DIR) -lowlps-resultreader
LIBS = -L$(LIBOWLPS_DIR) -lowlps \
	-L$(LIBOWLPSCLIENT_DIR) -lowlps-client

OS := $(shell uname)
ifeq "$(OS)" "Linux"
	LIBS += -lrt
endif
ifeq "$(OS)" "GNU/kFreeBSD"
	LIBS += -lrt
endif

LDFLAGS = $(LIBS) $(OWLPSFLAGS)

STATIC_LIBS =


## Standard targets ##

.PHONY : all dynamic static install uninstall clean purge help

dynamic : $(TARGET)
static : $(TARGET).static
all : dynamic static

# Cancel implicit make rule
%: %.c

%: %.o
	$(CC) $(XCFLAGS) -o $@ $^ $(LDFLAGS)
%.static: %.o
	$(CC) $(XCFLAGS) -o $@ $^ \
		$(LDFLAGS) $(LIBS) $(STATIC_LIBS) -static
	$(STRIP) $@
%.o: %.c $(HEADER)
	$(CC) $(XCFLAGS) $(OWLPSFLAGS) -c $<


## Installation / uninstallation ##

install : $(TARGET)
	@$(CP) $(TARGET) $(INSTALL_DIR)
	@cd $(INSTALL_DIR) ; chown root:root $(TARGET) ; chmod 755 $(TARGET)

install-static : $(TARGET).static
	@$(CP) $(TARGET).static $(INSTALL_DIR)
	@cd $(INSTALL_DIR) ; chown root:root $(TARGET).static ; chmod 755 $(TARGET).static

uninstall :
	@$(RM) $(INSTALL_DIR)/{$(TARGET),$(TARGET).static}


## Cleaning ##

clean :
	@$(RM) *~ *.o *.d

purge : clean
	@$(RM) $(TARGET) $(TARGET).static


## Help ##

help :
	@echo "Needed libraries:"
	@echo "	libowlps-dev"
	@echo "	libowlps-client-dev"
	@echo
	@echo "Targets:"
	@echo "	$(TARGET) (default target): Builds the program $(TARGET)."
	@echo "	$(TARGET).static : Builds the program $(TARGET).static \
(statically linked version)."
	@echo "	install: Installs the program $(TARGET)."
	@echo "	uninstall: Uninstalls the program $(TARGET)."
	@echo "	clean: Deletes the temporary files."
	@echo "	purge: Deletes the built binaries."
	@echo
	@echo "Note: Files are installed under $(PREFIX)."
	@echo "Tune the PREFIX variable in the Makefile to change that."