Makefile

#
# Type `make help` for a list of all the targets
#

CC=gcc
CFLAGS=-c -Wall -Wextra -I /usr/local/include `libpng-config --cflags` -DUSEPNG -DUSEJPG
LDFLAGS=`libpng-config --ldflags` -lz -ljpeg -lm
AWK=awk

# Add your source files here:
LIB_SOURCES=bmp.c
LIB_OBJECTS=$(LIB_SOURCES:.c=.o)
LIB=libbmp.a

# To build luabmp, link against the lua library
LUALIBS=-llua

DOC_DIR = doc

DOCS=$(DOC_DIR)/bitmap.html $(DOC_DIR)/README.html \
	$(DOC_DIR)/freetype-fonts.html $(DOC_DIR)/built-in-fonts.html \
	$(DOC_DIR)/LICENSE

ifeq ($(BUILD),debug)
# Debug
CFLAGS += -O0 -g
LDFLAGS +=
else
# Release mode
CFLAGS += -O2 -DNDEBUG
LDFLAGS += -s
endif

LUA_EXEC=luabmp

ifeq ($(OS),Windows_NT)
    # Windows (MinGW)
	CFLAGS += -D WIN32
	LUA_EXEC := $(LUA_EXEC).exe
else
    UNAME_S := $(shell uname -s)
    ifeq ($(UNAME_S),Linux)
    endif
	ifeq ($(UNAME_S),Linux)
		# Under linux, we need to link Lua related stuff with -ldl
		LUALIBS += -ldl
        CFLAGS += -D LINUX
    endif
    ifeq ($(UNAME_S),Darwin)
        CFLAGS += -D OSX
    endif

endif

all: libbmp.a docs utils stb   ## Builds everything

debug:    ## Build a library with debugging symbols
	@$(MAKE) BUILD=debug

libbmp.a: $(LIB_OBJECTS)
	@echo $@
	@ar rs $@ $^

.c.o:
	@echo $@
	@$(CC) $(CFLAGS) -c $< -o $@

bmp.o: bmp.c bmp.h

docs: $(DOCS) | $(DOC_DIR)   ## Generates documentation

$(DOC_DIR):
	@echo $@
	@mkdir -p doc

$(DOC_DIR)/bitmap.html: bmp.h d.awk | $(DOC_DIR)
	@echo $@
	@$(AWK) -v Title="API Documentation" -f d.awk $< > $@

$(DOC_DIR)/LICENSE: LICENSE | $(DOC_DIR)
	@echo $@
	@cp $< $@

$(DOC_DIR)/README.html: README.md d.awk | $(DOC_DIR)
	@echo $@
	@$(AWK) -f d.awk -v Clean=1 -v Title="README" $< > $@

$(DOC_DIR)/freetype-fonts.html: ftypefont/ftfont.h d.awk | $(DOC_DIR)
	@echo $@
	@$(AWK) -v Title="FreeType Font Support" -f d.awk $< > $@

$(DOC_DIR)/built-in-fonts.html: fonts/instructions.md d.awk | $(DOC_DIR)
	@echo $@
	@$(AWK) -v Title="Raster Font Support" -f d.awk -v Clean=1 $< > $@

# Single header file library
stb: bmph.h      ## Package into a single header library
bmph.h: bmp.c bmp.h
	@echo Making stb-style single header library $@ from $^
	@echo '/* STB-style single header bitmap library.'                                 > $@
	@echo ' *'                                                                        >> $@
	@echo ' * To use this file, add the following to _one_ source file:'              >> $@
	@echo ' *'                                                                        >> $@
	@echo ' *     #define BMPH_IMPLEMENTATION'                                        >> $@
	@echo ' *     #include "bmph.h"'                                                  >> $@
	@echo ' *'                                                                        >> $@
	@echo ' * and then use `#include "bmph.h"` in all other files that'               >> $@
	@echo ' * use the bitmap functionality.'                                          >> $@
	@echo ' *'                                                                        >> $@
	@echo ' * This file was automatically generated by a script.'                     >> $@
	@echo ' * To modify the code, it is recommend to modify the original'             >> $@
	@echo ' * sources and then regenerating this file by running `make bmph.h`.'      >> $@
	@echo ' *'                                                                        >> $@
	@echo ' * The original sources can be found at https://github.com/wernsey/bitmap' >> $@
	@echo ' * Contributions are welcome.'                                             >> $@
	@echo ' *'                                                                        >> $@
	@echo ' * For more information on stb-style single header libraries, see'         >> $@
	@echo ' * https://github.com/nothings/stb/blob/master/docs/stb_howto.txt'         >> $@
	@echo ' */'                                                                       >> $@
	@cat bmp.h                                                                        >> $@
	@echo '#ifdef BMPH_IMPLEMENTATION'                                                >> $@
	@cat bmp.c                                                                        >> $@
	@echo '#endif /* BMPH_IMPLEMENTATION */'                                          >> $@

utils: util/hello util/bmfont util/dumpfonts util/cvrt util/imgdup  ## Build utilities

util/hello: hello.o libbmp.a | util
	@echo $@
	@$(CC) -o $@ $^ $(LDFLAGS)

util/bmfont: fonts/bmfont.o misc/to_xbm.o libbmp.a | util
	@echo $@
	@$(CC) -o $@ $^ $(LDFLAGS)

util/dumpfonts: fonts/dumpfonts.o misc/to_xbm.o libbmp.a | util
	@echo $@
	@$(CC) -o $@ $^ $(LDFLAGS)

util/cvrt: misc/cvrt.o libbmp.a | util
	@echo $@
	@$(CC) -o $@ $^ $(LDFLAGS)

util/imgdup: misc/imgdup.o libbmp.a | util
	@echo $@
	@$(CC) -o $@ $^ $(LDFLAGS)

lua-bindings : $(LUA_EXEC) ## Builds a Lua interpreter for working with bitmaps

$(LUA_EXEC): misc/luabmp.o libbmp.a | doc
	@echo $@
	@$(CC) -o $@ $^ $(LDFLAGS) $(LUALIBS)
	@awk -f d.awk misc/luabmp.c > doc/luabmp.html

misc/luabmp.o: misc/luabmp.c
	@echo $@
	@$(CC) $(CFLAGS) -I . -c $< -o $@

ftypefont/fttest: ftypefont/fttest.c ftypefont/ftfont.c bmp.c
	@echo $@
	@$(CC) -I . -I /usr/local/include/freetype2/ -o $@ $^ -lfreetype $(LDFLAGS)

util:
	@echo $@
	@mkdir -p util

.PHONY : clean lua-bindings docs help stb

help:  ## Shows this message
	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

clean:   ## Cleans all the build files
	@-rm -f *.o $(LIB) bmph.h
	@-rm -f $(LUA_EXEC) hello *.exe test/*.exe
	@-rm -rf $(DOCS)
	@-rm -rf util doc misc/*.o fonts/*.o
	@echo Cleaned

# The .exe above is for MinGW, btw.