VERSION		= 0.1.1
REVISION	= 1

SHELL	 	:= ${shell which bash}

IPATH 		+= src
IPATH 		+= srcgl
VPATH		+= src
VPATH		+= srcgl

OBJ 		= obj-${shell $(CC) -dumpmachine}

C3SRC		= ${wildcard src/*.c}
C3OBJ 		= ${patsubst src/%,${OBJ}/%,${C3SRC:.c=.lo}}

C3GLSRC		= ${wildcard srcgl/*.c}
C3GLOBJ 	= ${patsubst srcgl/%,${OBJ}/%,${C3GLSRC:.c=.lo}}

CC 			= clang
PKGCONFIG	= pkg-config
INSTALL		= install

PLATFORM	= ${shell uname | tr '[A-Z]' '[a-z]'}

ifeq (${PLATFORM}, darwin)
# you need to install libtool via 'brew install libtool' on the mac
LIBTOOL		= glibtool
else
LIBTOOL		= libtool
endif

CONFIG_H	= c3config-${PLATFORM}.h
CPPCAIRO	+= ${shell $(PKGCONFIG) --cflags pango cairo}

CFLAGS		= -g -O2
CPPFLAGS	+= --std=gnu99 -fPIC
CPPFLAGS	+= ${patsubst %,-I%,${subst :, ,${IPATH}}}
CPPFLAGS 	+= $(CPPCAIRO) 

LDFLAGS		+= 

DESTDIR		= /usr/local

-include ${wildcard .make.options*}

all:	${OBJ} src/$(CONFIG_H) ${OBJ}/libc3.la ${OBJ}/libc3gl.la

${OBJ}:
	mkdir -p ${OBJ}

ifneq (${V}, 1)
E=@
LIBTOOL += --quiet
endif

src/$(CONFIG_H): Makefile
	$(E)rm -f $@
	$(E)echo CONFIG $@
	$(E)( \
	printf "#ifndef __C3_CONFIG__\n#define __C3_CONFIG__\n"; \
	printf "#define CONFIG_C3_VERSION \"$(VERSION)\"\n"; \
	printf "#define CONFIG_C3_PLATFORM \"$(PLATFORM)\"\n"; \
	$(PKGCONFIG) --exists pango cairo || printf "// " ; \
		printf "#define CONFIG_C3_CAIRO 1\n"; \
	printf "#endif\n"; \
	) >$@

${OBJ}/libc3.la: ${C3OBJ}
	@echo LINK $@
	$(E)$(LIBTOOL) --mode=link --tag=CC \
		$(CC) $(CPPFLAGS) $(CFLAGS) \
			$^ -o $@ \
			-version-info 0:1:0 \
			-rpath $(DESTDIR)/lib $(LDFLAGS)

${OBJ}/libc3gl.la: ${C3GLOBJ}
	@echo LINK $@
	$(E)$(LIBTOOL) --mode=link --tag=CC \
		$(CC) $(CPPFLAGS) $(CFLAGS) \
			$^ -o $@ \
			-version-info 0:1:0 \
			-rpath $(DESTDIR)/lib $(LDFLAGS)

${OBJ}/%.lo: %.c
	@echo CC $<
	$(E)$(LIBTOOL) --mode=compile --tag=CC \
		$(CC) $(CPPFLAGS) $(CFLAGS) -MT $@ -MMD \
			$<  -c -o $@

install:
	mkdir -p $(DESTDIR)/lib/pkgconfig $(DESTDIR)/include/c3
	rm -f $(DESTDIR)/lib/libc3* $(DESTDIR)/include/c3/*
	$(INSTALL) src/*.h $(DESTDIR)/include/c3/
	cp -a ${OBJ}/.libs/*.a ${OBJ}/.libs/*.so* $(DESTDIR)/lib/
	sed -e 's|PREFIX|${DESTDIR}|g' -e 's|VERSION|${VERSION}|g' \
		libc3.pc >$(DESTDIR)/lib/pkgconfig/libc3.pc 
	 
clean:
	rm -rf ${OBJ}

# include the dependency files generated by gcc, if any
-include ${wildcard ${OBJ}/*.d}