OBJ_DIR?=build
TARGET_DIR?=build
SRC_DIR?=.
RUST_TARGET_DIR?=../../target
RUST_SRC_DIR?=../../c
RUSTFLAGS?=

CFLAGS?=-Wall -g -I../../c/build/include
LIBS?=-lpathfinder_c -lglfw
MKDIR?=mkdir -p
RM?=rm
CARGO?=cargo

UNAME=$(shell uname -s)
ifeq ($(UNAME),Darwin)
	# FIXME(pcwalton): Don't link against HarfBuzz!!
	LIBS+=-framework OpenGL -framework CoreFoundation -framework CoreGraphics -framework CoreText
	LIBS+=-framework Metal -lharfbuzz
else
	LIBS+=-lGL
endif

ifeq ($(DEBUG),)
	CFLAGS+=-O2
	LDFLAGS?=-L$(RUST_TARGET_DIR)/release
	CARGOFLAGS?=--release
else
	CFLAGS+=-O0
	LDFLAGS?=-L$(RUST_TARGET_DIR)/debug
	CARGOFLAGS?=
endif

all:	$(TARGET_DIR)/c_canvas_glfw_minimal

.PHONY:	clean rustlib

$(TARGET_DIR)/c_canvas_glfw_minimal:	$(OBJ_DIR)/c_canvas_glfw_minimal.o rustlib
	$(MKDIR) $(TARGET_DIR) && $(CC) $(LDFLAGS) $(LIBS) -o $@ $<

$(OBJ_DIR)/%.o:	$(SRC_DIR)/%.c
	$(MKDIR) $(OBJ_DIR) && $(CC) -c $(CFLAGS) -o $@ $<

rustlib:
	cd $(RUST_SRC_DIR) && RUSTFLAGS="$(RUSTFLAGS)" $(CARGO) build $(CARGOFLAGS)

clean:
	$(RM) -rf $(TARGET_DIR) && $(RM) -rf $(OBJ_DIR)