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

# Compiler
ifeq "$(origin CC)" "default"
	COLORGCC := $(shell which colorgcc >/dev/null 2>&1 ; echo $$?)
	ifeq "$(COLORGCC)" "0"
		CC = colorgcc
	endif
endif

# Other tools
AR = ar
RANLIB = ranlib

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

# General variables
LIB_CIBLE=libowlps
VERSION = 3.0

# Targets to build
STATIC=$(LIB_CIBLE).a
DYNAMIC=$(LIB_CIBLE).so.$(VERSION)
#PROGS=
HEADER=owlps.h
#HEADERS=

# Library components
OBJS=$(LIB_CIBLE).o

# Flags
CFLAGS = -O2 -Wall -Wextra -Wstrict-prototypes -O
#CFLAGS += -g -O0
#CFLAGS += -D NDEBUG
DEPFLAGS=-MMD
XCFLAGS=$(CFLAGS) $(DEPFLAGS) $(WARN) $(HEADERS)
PICFLAG=-fPIC
LIBS =
#STRIPFLAGS= -Wl,-s
#LDFLAGS=


## Standard targets ##

.PHONY : all dynamic static install install-dynamic install-static install-header uninstall uninstall-dynamic uninstall-static uninstall-header clean purge help

all : dynamic static
dynamic : $(DYNAMIC)
static : $(STATIC)

%.o: %.c $(HEADER)
	$(CC) $(XCFLAGS) $(PICFLAG) -c -o $@ $<

# Dynamic library compilation
$(DYNAMIC): $(OBJS)
	$(CC) -shared -o $@ -Wl,-soname,$@ $(STRIPFLAGS) $(LIBS) -lc $^
	$(SYMLINK) $@ $(LIB_CIBLE).so
	chmod a-x $@

# Static library compilation
$(STATIC): $(OBJS)
	$(RM) $@
	$(AR) cru $@ $^
	$(RANLIB) $@


## Installation ##

install : install-static install-dynamic

install-dynamic : install-header $(DYNAMIC)
	@$(CP) $(DYNAMIC) $(INSTALL_LIB) &&\
		chmod 644 $(INSTALL_LIB)/$(DYNAMIC) &&\
		chown root:root $(INSTALL_LIB)/$(DYNAMIC) &&\
		cd $(INSTALL_LIB) && $(SYMLINK) $(DYNAMIC) $(LIB_CIBLE).so &&\
		echo "Reconstruction du cache pour ld.so : ldconfig $(INSTALL_LIB)" ; ldconfig $(INSTALL_LIB)

install-static : install-header $(STATIC)
	@$(CP) $(STATIC) $(INSTALL_LIB) &&\
		chmod 644 $(INSTALL_LIB)/$(STATIC) &&\
		chown root:root $(INSTALL_LIB)/$(STATIC)

install-header : $(HEADER)
	@$(CP) $(HEADER) $(INSTALL_INC) &&\
		chmod 644 $(INSTALL_INC)/$(HEADER) &&\
		chown root:root $(INSTALL_INC)/$(HEADER)


## Uninstallation ##

uninstall : uninstall-dynamic uninstall-static

uninstall-dynamic : uninstall-header
	@$(RM) $(INSTALL_LIB)/$(DYNAMIC) $(INSTALL_LIB)/$(LIB_CIBLE).so
	@echo "Reconstruction du cache pour ld.so : ldconfig" ; ldconfig

uninstall-static : uninstall-header
	@$(RM) $(INSTALL_LIB)/$(STATIC)

uninstall-header :
	@$(RM) $(INSTALL_INC)/$(HEADER)


## Cleaning ##

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

purge : clean
	@$(RM) $(DYNAMIC) *.so $(STATIC) $(PROGS)


## Help ##

help :
	@echo "Needed libraries:"
	@echo "	libiw-dev"
	@echo
	@echo "Targets:"
	@echo "	all (default target): Builds the library (dynamic & static)."
	@echo "	dynamic: Builds the shared library."
	@echo "	static: Builds the static library."
	@echo
	@echo "	install: Installs the library (dynamic & static)."
	@echo "	install-dynamic: Installs the shared library."
	@echo "	install-static: Installs the static library."
	@echo
	@echo "	uninstall: Uninstalls everything."
	@echo "	uninstall-dynamic: Uninstalls the shared library."
	@echo "	uninstall-static: Uninstalls the static library."
	@echo
	@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."