Makefile.wasm

OUT_FILE := main.js

OUT_DIR := build
INC_DIR := src
SRC_DIR := src
OBJ_DIR := obj/wasm

# CXX := EMCC_WASM_BACKEND=1 em++
# LINKER := EMCC_WASM_BACKEND=1 em++
CXX := em++
LINKER := em++
INC_DIRS := -I$(INC_DIR)
CXX_FLAGS = \
	-std=c++11 \
	-std=c++14 \
  -Wall \
  -Wno-missing-braces \
	-Wextra \
	-Wshadow \
	-pedantic \
	-Oz \
	-s USE_SDL=2 \
	-s USE_SDL_IMAGE=2 \
	-s USE_SDL_TTF=2 \
	-s SDL2_IMAGE_FORMATS='["png"]' \
	-s MODULARIZE=1 \
	-s DISABLE_EXCEPTION_CATCHING=0 \
	-s WASM=1 \
	-s "BINARYEN_METHOD='native-wasm'" \
  -s ASSERTIONS=1 \
	-s TOTAL_MEMORY=160MB \
	#-D DRAW_FPS \
	-D DRAW_COLLISION 
EXEC_FLAGS = \
	--preload-file assets \
	-s EXPORTED_FUNCTIONS='["_initialize", "_resize"]' \
	--emrun
LIBS :=

SRC_FILES := $(shell find $(SRC_DIR) -name '*.cpp')
OBJ_FILES := $(patsubst $(SRC_DIR)/%.cpp,$(OBJ_DIR)/%.o,$(SRC_FILES))
DEPFILES := $(patsubst $(SRC_DIR)/%.cpp,$(OBJ_DIR)/%.d,$(SRC_FILES))

$(OUT_DIR)/$(OUT_FILE): $(OBJ_FILES)
	$(LINKER) $(CXX_FLAGS) $(EXEC_FLAGS) $^ $(LIBS) -o $@

clean:
	rm -rf $(OBJ_DIR) $(OUT_DIR)/main*.{js,data,wasm,wast}

list:
	@echo "$(SRC_FILES)"
	@echo "$(OBJ_FILES)"

depends:
	rm -rf $(OBJ_DIR)/*.d
	$(MAKE) $(DEPFILES)

$(OBJ_DIR)/%.o: $(SRC_DIR)/%.cpp
	@mkdir -p $(@D)
	$(CXX) $(CXX_FLAGS) $(INC_DIRS) -c $< -o $@

$(OBJ_DIR)/%.d: $(SRC_DIR)/%.cpp
	@mkdir -p $(@D)
	$(CXX) $(CXX_FLAGS) $(INC_DIRS) -MM $< | tr '\n\r\\' ' ' | sed -e 's%^%$@ %' -e 's% % $(OBJ_DIR)/%' > $@

-include $(DEPFILES)