Makefile

#
# Asteroids-3D makefile
#

CC ?= gcc
SRCDIR := src
BUILDDIR := build
TARGETDIR := bin
DATADIR := data
TARGET := $(TARGETDIR)/asteroids-3d

CPPCOMMENT := ext/stb/stb_image.h
SRCEXT := c
SOURCES := asteroids-3d.c
OBJECTS := $(BUILDDIR)/asteroids-3d.o
DEBUGFLAGS := -Wall -Wextra -pedantic -Werror -Wfatal-errors -Wformat=2 \
	-Wno-unused-function -Wswitch-enum -Wcast-align -Wpointer-arith \
	-Wbad-function-cast -Wno-strict-aliasing -Wstrict-overflow=5 \
	-Wfloat-conversion -Wstrict-prototypes -Winline -Wundef \
	-Wnested-externs -Wcast-qual -Wshadow -Wunreachable-code -Wlogical-op \
	-Wfloat-equal -Wredundant-decls -Wold-style-definition -ggdb3 -O0 \
	-fno-omit-frame-pointer -ffloat-store -fno-common -fstrict-aliasing
RELEASEFLAGS := -O3 -Wall -Wl,--strip-all
LIB := -lm -lSDL2 -lGL
INC := -Iinclude `sdl2-config --cflags`

all: | rm-comments c89 debug-flag makedirs $(OBJECTS) $(TARGET) cp-data

debug-c89: | rm-comments c89 debug-flag makedirs $(OBJECTS) $(TARGET) cp-data

release-c89: | rm-comments c89 release-flag makedirs $(OBJECTS) $(TARGET) cp-data

debug-gnu89: | rm-comments gnu89 debug-flag makedirs $(OBJECTS) $(TARGET) cp-data

release-gnu89: | rm-comments gnu89 release-flag makedirs $(OBJECTS) $(TARGET) cp-data

$(TARGET): $(OBJECTS)
	@echo ""
	@echo " Linking..."
	@echo " $(CC) $(CFLAGS) $^ -o $(TARGET) $(LIB)" ; \
		$(CC) $(CFLAGS) $^ -o $(TARGET) $(LIB)

$(BUILDDIR)/%.o: $(SRCDIR)/%.$(SRCEXT)
	@echo " $(CC) $(CFLAGS) $(INC) -c -o $@ $<"; \
		$(CC) $(CFLAGS) $(INC) -c -o $@ $<

rm-comments: $(CPPCOMMENT)
	@echo " Stripping C++ style comments from $<..."
	@echo " sed -i.orig 's|[[:blank:]]*//.*||' $<"
	@sed -i.orig 's|[[:blank:]]*//.*||' $<
	@echo ""

makedirs:
	@mkdir -p $(BUILDDIR)
	@mkdir -p $(TARGETDIR)

cp-data: $(DATADIR)
	@echo ""
	@echo " Copying game data to $(TARGETDIR)..."
	@cp -rv $< $(TARGETDIR)

debug-flag:
	$(eval CFLAGS += $(DEBUGFLAGS))

release-flag:
	$(eval CFLAGS += $(RELEASEFLAGS))

c89:
	$(eval DEBUGFLAGS="-std=c89" $(DEBUGFLAGS))
	$(eval RELEASEFLAGS="-std=c89" $(RELEASEFLAGS))

gnu89:
	$(eval DEBUGFLAGS="-std=gnu89" "-D_GNU_SOURCE" $(DEBUGFLAGS))
	$(eval RELEASEFLAGS="-std=gnu89" "-D_GNU_SOURCE" $(RELEASEFLAGS))

clean:
	@echo " Cleaning..."; 
	@echo " $(RM) -r $(BUILDDIR) $(TARGETDIR)" ; \
		$(RM) -r $(BUILDDIR) $(TARGETDIR)

.PHONY: all makedirs debug release clean tests