CC := i686-w64-mingw32-gcc

CXX := i686-w64-mingw32-g++

WARN := -Wall -Wextra -Werror

CFLAGS := -std=c11 -O2 $(WARN)

CXXFLAGS := -std=c++17 -O2 $(WARN) -fno-exceptions -fno-rtti -msse2 -mfpmath=sse

LDFLAGS := -shared -static-libgcc -Wl,--enable-stdcall-fixup

GL_LIBS := -lopengl32 -lgdi32 -luser32

BUILD := build

LIBD2 ?= third_party/libd2

ZIG ?= zig

D2UTIL_DIR := $(BUILD)/libd2

D2UTIL_LIB := $(D2UTIL_DIR)/lib/d2util.lib

COMMON_SRC := src/common/log.c src/common/build.c

RENDERER_C := src/D2OpenGL/dllmain.c src/D2OpenGL/crashlog.c src/D2OpenGL/launch.c src/D2OpenGL/d2loader.c \

src/D2OpenGL/install/patch.c src/D2OpenGL/install/install_114d.c \

src/D2OpenGL/install/install_dllera.c

RENDERER_CXX := $(wildcard src/D2OpenGL/*.cpp src/D2OpenGL/*/*.cpp)

RENDERER_OBJ := $(patsubst %.c,$(BUILD)/%.o,$(COMMON_SRC) $(RENDERER_C)) \

$(patsubst %.cpp,$(BUILD)/%.o,$(RENDERER_CXX))

all: $(BUILD)/D2OpenGL.dll

$(BUILD)/D2OpenGL.dll: $(RENDERER_OBJ) src/D2OpenGL/D2OpenGL.def $(D2UTIL_LIB)

$(CXX) -o $@ $^ $(LDFLAGS) -static-libstdc++ $(GL_LIBS)

$(D2UTIL_LIB): FORCE

@test -f $(LIBD2)/packages/util/build.zig || { echo "libd2 not found at $(LIBD2): git submodule update --init"; exit 1; }

cd $(LIBD2)/packages/util && $(ZIG) build -Dtarget=x86-windows-gnu -Doptimize=ReleaseFast \

--cache-dir $(abspath $(BUILD))/zig-cache --prefix $(abspath $(D2UTIL_DIR))

$(RENDERER_OBJ): | $(D2UTIL_LIB)

$(BUILD)/%.o: %.c

@mkdir -p $(dir $@)

$(CC) $(CFLAGS) -MMD -MP -c -o $@ $<

$(BUILD)/%.o: %.cpp

@mkdir -p $(dir $@)

$(CXX) $(CXXFLAGS) -I$(D2UTIL_DIR)/include -MMD -MP -c -o $@ $<

clean:

rm -rf build

-include $(shell find $(BUILD) -name '*.d' 2>/dev/null)

.PHONY: all clean FORCE