Q = @

	E = @echo

endif

# Some configurational settings for your environment.

# If GRFCodec doesn't know a command, it'll exit with a non-zero exit code.

GRFCODEC := $(shell grfcodec -s -v >/dev/null 2>/dev/null && echo "grfcodec -s" || echo "grfcodec")

# Old NFORenums don't give an error code when a parameter isn't known, so we have to work around that.

NFORENUM := $(shell [ `nforenum -s -v 2>/dev/null | wc -l ` -eq 1 ] && echo "nforenum -s" || echo "nforenum")

MD5SUM   := $(shell [ "$(OS)" = "OSX" ] && echo "md5 -r" || echo "md5sum")

# Some "should not be changed" settings.

# Build the GRF.

all: $(BIN_DIR)/openttd.grf

# Make sure the sprites directory exists.

$(OBJS_DIR)/sprites:

	$(Q)-mkdir "$@"

# Generic

$(BIN_DIR)/openttd.grf: $(PNG_FILES) $(NFO_FILES) $(OBJS_DIR)/sprites

	@# Only try; if nforenum isn't available, just retouch the file as they likely didn't need it anyway.

	$(Q) ($(NFORENUM) --help > /dev/null 2>&1 && $(MAKE) $(OBJS_DIR)/openttd.grf && cp $(OBJS_DIR)/openttd.grf $(BIN_DIR)/openttd.grf) || ([ -e $(BIN_DIR)/openttd.grf ] && touch $(BIN_DIR)/openttd.grf && echo "no NFORenum and GRFCodec found, skipping rebuild of openttd.grf...") || (echo "no NFORenum and GRFCodec found, but no openttd.grf either. Install NFORenum and GRFCodec." && exit 1)