PROGNAME = picshow
BINARY = $(PROGNAME)

CFLAGS = -Wall -std=c99 -pedantic -march=native -O3
CXXFLAGS = -Wall -pedantic
LDFLAGS =
LIBS = -lm

DISABLED_FEATURES =
ENABLED_FEATURES =

ifneq ($(shell pkg-config --modversion --silence-errors sdl),)
CFLAGS += -DHAVE_SDL $(shell pkg-config --cflags-only-I sdl)
LIBS += $(shell pkg-config --libs sdl)
ENABLED_FEATURES += "[SDL preview]"
else
DISABLED_FEATURES += "[SDL preview]"
endif

ifneq ($(shell pkg-config --modversion --silence-errors x264),)
CFLAGS += -DHAVE_X264 $(shell pkg-config --cflags x264)
LIBS += $(shell pkg-config --libs x264)
ENABLED_FEATURES += "[x264 encoding]"
else
DISABLED_FEATURES += "[x264 encoding]"
endif

ifneq ($(shell pkg-config --modversion --silence-errors libavcodec),)
CFLAGS += -DHAVE_FFMPEG $(shell pkg-config --cflags libavcodec)
LIBS += $(shell pkg-config --libs libavcodec)
ENABLED_FEATURES += "[FFmpeg encoding]"
else
DISABLED_FEATURES += "[FFmpeg encoding]"
endif

all: info $(BINARY) doc

info:
ifeq ($(ENABLED_FEATURES),)
	@echo "Enabled  optional features: none"
else
	@echo "Enabled  optional features:$(ENABLED_FEATURES)"
endif
ifeq ($(DISABLED_FEATURES),)
	@echo "Disabled optional features: none"
else
	@echo "Disabled optional features:$(DISABLED_FEATURES)"
endif

##### DEPENDENCIES #############################################################

scale.o: scale.c scale.h
ujpeg.o: ujpeg.c ujpeg.h
random.o: random.c random.h
rgb2yuv.o: rgb2yuv.c rgb2yuv.h
preview.o: preview.c preview.h
encode.o: encode.c encode.h
core.o: core.c core.h ujpeg.h scale.h random.h
optread.o: optread.c optread.h
main.o: main.c optread.h core.h ujpeg.h rgb2yuv.h preview.h encode.h main.h
config.o: config.c optread.h core.h ujpeg.h encode.h main.h random.h
help.o: help.c
test_ujpeg.o: test_ujpeg.cpp ujpeg.h
test_scale.o: test_scale.c scale.h ujpeg.h
test_output.o: test_output.c ujpeg.h scale.h rgb2yuv.h preview.h encode.h
test_core.o: test_core.c core.h ujpeg.h scale.h random.h preview.h
test_optread.o: test_optread.c optread.h

##### APPLICATIONS #############################################################

$(BINARY): main.o config.o core.o ujpeg.o scale.o rgb2yuv.o preview.o encode.o optread.o random.o help.o
	$(CC) -o $@ $(LDFLAGS) $^ $(LIBS)
test: $(BINARY) test.opts
	./$< -c test.opts

test_ujpeg: test_ujpeg.o ujpeg.o
	$(CXX) -o $@ $(LDFLAGS) $^ $(LIBS)
do-test-ujpeg: test_ujpeg
	time ./$< WeserFlowers.jpg test_ujpeg.ppm

test_scale: test_scale.o scale.o ujpeg.o
	$(CC) -o $@ $(LDFLAGS) $^ $(LIBS)
do-test-scale: test_scale
	./$< WeserFlowers_small.jpg

test_output: test_output.o ujpeg.o scale.o rgb2yuv.o preview.o encode.o
	$(CC) -o $@ $(LDFLAGS) $^ $(LIBS)
do-test-output: test_output
	time ./$< WeserFlowers.jpg test_output.m2v

test_core: test_core.o core.o ujpeg.o scale.o random.o preview.o
	$(CC) -o $@ $(LDFLAGS) $^ $(LIBS)
do-test-core: test_core
	time ./$< WeserFlowers_small.jpg 654321 Colorful_Lorikeets.jpg

test_optread: test_optread.o optread.o
	$(CC) -o $@ $(LDFLAGS) $^ $(LIBS)
do-test-optread: test_optread test_optread.opts
	./$< -file test_optread.opts

##### DEPENDENCIES #############################################################

doc: $(PROGNAME).1
do-test-doc: $(PROGNAME).1
	man -l $<

%.1: %.html html2man.py
	python html2man.py $<

##### CONVENIENCE STUFF ########################################################

clean:
	rm -f *.o
	rm -f $(BINARY) test_scale test_ujpeg test_output test_core test_optread
	rm -f test_ujpeg.ppm test_output.264 test_output.y4m test_output.m2v test_output.m4v
	rm -f $(PROGNAME).1

.PHONY: all info doc clean test
.PHONY: do-test-scale do-test-ujpeg do-test-output do-test-core do-test-optread do-test-doc