ROOT = $(TUP_CWD)

## Base
CC = @(CC)
CFLAGS += -std=c99 -pedantic
CFLAGS += -D_POSIX_C_SOURCE=200809L
CFLAGS += -I$(ROOT)/src
CFLAGS += -I$(ROOT)/src/modules
CFLAGS += -fvisibility=hidden
CFLAGS += -Wall -Wextra
CFLAGS += -Wno-unused-parameter
CFLAGS_@(OPENVR) += -Wno-typedef-redefinition
CFLAGS_@(STRICT) += -Werror
CFLAGS_@(DEBUG) += -g
CFLAGS_@(OPTIMIZE) += -Os
CFLAGS_@(SANITIZE) += -fsanitize=address,undefined
LDFLAGS_@(SANITIZE) += -fsanitize=address,undefined

## Modules
CFLAGS_@(AUDIO) += -DLOVR_ENABLE_AUDIO
CFLAGS_@(DATA) += -DLOVR_ENABLE_DATA
CFLAGS_@(EVENT) += -DLOVR_ENABLE_EVENT
CFLAGS_@(FILESYSTEM) += -DLOVR_ENABLE_FILESYSTEM
CFLAGS_@(GRAPHICS) += -DLOVR_ENABLE_GRAPHICS
CFLAGS_@(HEADSET) += -DLOVR_ENABLE_HEADSET
CFLAGS_@(MATH) += -DLOVR_ENABLE_MATH
CFLAGS_@(PHYSICS) += -DLOVR_ENABLE_PHYSICS
CFLAGS_@(THREAD) += -DLOVR_ENABLE_THREAD
CFLAGS_@(TIMER) += -DLOVR_ENABLE_TIMER
CFLAGS_@(JSON) += -DLOVR_ENABLE_JSON
CFLAGS_@(ENET) += -DLOVR_ENABLE_ENET

## Headset backends
CFLAGS_@(SIMULATOR) += -DLOVR_USE_DESKTOP_HEADSET
CFLAGS_@(OPENVR) += -DLOVR_USE_OPENVR
CFLAGS_@(OPENXR) += -DLOVR_USE_OPENXR
CFLAGS_@(OCULUS) += -DLOVR_USE_OCULUS
CFLAGS_@(OCULUS) += -I@(OCULUS_PATH)/LibOVR/Include
CFLAGS_@(VRAPI) += -DLOVR_USE_VRAPI
CFLAGS_@(WEBXR) += -DLOVR_USE_WEBXR
CFLAGS_@(LEAP) += -DLOVR_USE_LEAP

## Platform
ifeq (@(PLATFORM),)
  PLATFORM = @(TUP_PLATFORM)
else
  PLATFORM = @(PLATFORM)
endif

LIB = libs
BUILD = @(CMAKE_DEPS)
DEPS = $(ROOT)/deps

## Windows
ifeq ($(PLATFORM),win32)
  CFLAGS += -D_CRT_SECURE_NO_WARNINGS
  CFLAGS += -Wno-language-extension-token
  LDFLAGS += -lShell32 -lOle32
  CFLAGS_@(GRAPHICS) += -DLOVR_GL
  EXTRAS += lovr.lib lovr.exp
  SUFFIX = .exe

  ifeq (@(OPTIMIZE),y)
    CONFIG = Release
  else
    CONFIG = Debug
  endif

  ifneq ($(BUILD),)
    ifeq (@(LUAJIT),y)
      CFLAGS += -I$(DEPS)/luajit/src
      LDFLAGS += -L$(BUILD)/luajit/src/$(CONFIG) -lluajit
      LIBS += $(BUILD)/luajit/src/$(CONFIG)/luajit.dll
    else
      CFLAGS += -I$(DEPS)/lua/src -I$(BUILD)/lua
      LDFLAGS += -L$(BUILD)/lua/$(CONFIG) -llua
    endif

    CFLAGS += -I$(DEPS)/glfw/include
    CFLAGS_@(AUDIO) += -I$(DEPS)/openal-soft/include
    CFLAGS_@(DATA) += -I$(DEPS)/msdfgen
    CFLAGS_@(OPENVR) += -I$(DEPS)/openvr/headers
    CFLAGS_@(PHYSICS) += -I$(DEPS)/ode/include -I$(BUILD)/ode/include
    CFLAGS_@(ENET) += -I$(DEPS)/enet/include

    LDFLAGS += -L$(BUILD)/glfw/src/$(CONFIG) -lglfw3dll
    LDFLAGS_@(AUDIO) += -L$(BUILD)/openal/$(CONFIG) -lOpenAL32
    LDFLAGS_@(DATA) += -L$(BUILD)/lib_msdfgen/$(CONFIG) -lmsdfgen
    LDFLAGS_@(OPENVR) += -L$(DEPS)/openvr/bin/win64/$(CONFIG) -lopenvr_api64
    LDFLAGS_@(PHYSICS) += -L$(BUILD)/ode/$(CONFIG) -lode
    LDFLAGS_@(ENET) += -L$(BUILD)/enet/$(CONFIG) -lenet

    LIBS += $(BUILD)/glfw/src/$(CONFIG)/glfw3.dll
    LIBS_@(AUDIO) += $(BUILD)/glfw/src/$(CONFIG)/glfw3.dll
    LIBS_@(DATA) += $(BUILD)/lib_msdfgen/$(CONFIG)/msdfgen.dll
    LIBS_@(OPENVR) += $(DEPS)/openvr/bin/win64/openvr_api.dll
    LIBS_@(PHYSICS) += $(BUILD)/ode/$(CONFIG)/ode.dll
  endif
endif

## macOS
ifeq ($(PLATFORM),macosx)
  PLATFORM = macos
  LDFLAGS += -lobjc
  LDFLAGS += -Wl,-rpath,@executable_path/$(LIB)
  CFLAGS_@(GRAPHICS) += -DLOVR_GL

  ifneq ($(BUILD),)
    ifeq (@(LUAJIT),y)
      CFLAGS += -I$(DEPS)/luajit/src
      LDFLAGS += -L$(BUILD)/luajit/src -lluajit -pagezero_size 10000 -image_base 100000000
      LIBS += $(BUILD)/luajit/src/libluajit.dylib
    else
      CFLAGS += -I$(DEPS)/lua/src -I$(BUILD)/lua
      LDFLAGS += -L$(BUILD)/lua -llua
    endif

    CFLAGS += -I$(DEPS)/glfw/include
    CFLAGS_@(AUDIO) += -I$(DEPS)/openal-soft/include
    CFLAGS_@(DATA) += -I$(DEPS)/msdfgen
    CFLAGS_@(OPENVR) += -I$(DEPS)/openvr/headers
    CFLAGS_@(PHYSICS) += -I$(DEPS)/ode/include -I$(BUILD)/ode/include
    CFLAGS_@(ENET) += -I$(DEPS)/enet/include

    LDFLAGS += -L$(BUILD)/glfw/src -lglfw
    LDFLAGS_@(AUDIO) += -L$(BUILD)/openal -lopenal
    LDFLAGS_@(DATA) += -L$(BUILD)/lib_msdfgen -lmsdfgen
    LDFLAGS_@(OPENVR) += -L$(BUILD)/openvr_api -lopenvr_api
    LDFLAGS_@(PHYSICS) += -L$(BUILD)/ode -lode
    LDFLAGS_@(ENET) += -L$(BUILD)/enet -lenet

    LIBS += $(BUILD)/glfw/src/libglfw.*dylib
    LIBS_@(AUDIO) += $(BUILD)/openal/libopenal.*dylib
    LIBS_@(DATA) += $(BUILD)/lib_msdfgen/libmsdfgen.dylib
    LIBS_@(OPENVR) += $(BUILD)/openvr_api/libopenvr_api.dylib
    LIBS_@(PHYSICS) += $(BUILD)/ode/libode.dylib
  endif
endif

## Linux
ifeq ($(PLATFORM),linux)
  LDFLAGS += -lm -lpthread
  LDFLAGS += -Wl,-rpath,\$ORIGIN/$(LIB)
  CFLAGS_@(GRAPHICS) += -DLOVR_GL

  ifneq ($(BUILD),)
    ifeq (@(LUAJIT),y)
      CFLAGS += -I$(DEPS)/luajit/src
      LDFLAGS += -L$(BUILD)/luajit/src -lluajit
      LIBS += $(BUILD)/luajit/src/libluajit.so
    else
      CFLAGS += -I$(DEPS)/lua/src -I$(BUILD)/lua
      LDFLAGS += -L$(BUILD)/lua -llua
    endif

    CFLAGS += -I$(DEPS)/glfw/include
    CFLAGS_@(AUDIO) += -I$(DEPS)/openal-soft/include
    CFLAGS_@(DATA) += -I$(DEPS)/msdfgen
    CFLAGS_@(OPENVR) += -I$(DEPS)/openvr/headers
    CFLAGS_@(PHYSICS) += -I$(DEPS)/ode/include -I$(BUILD)/ode/include
    CFLAGS_@(ENET) += -I$(DEPS)/enet/include

    LDFLAGS += -L$(BUILD)/glfw/src -lglfw
    LDFLAGS_@(AUDIO) += -L$(BUILD)/openal -lopenal
    LDFLAGS_@(DATA) += -L$(BUILD)/lib_msdfgen -lmsdfgen
    LDFLAGS_@(OPENVR) += -L$(BUILD)/openvr_api -lopenvr_api
    LDFLAGS_@(PHYSICS) += -L$(BUILD)/ode -lode
    LDFLAGS_@(ENET) += -L$(BUILD)/enet -lenet

    LIBS += $(BUILD)/glfw/src/libglfw.*so*
    LIBS_@(AUDIO) += $(BUILD)/openal/libopenal.*so*
    LIBS_@(DATA) += $(BUILD)/lib_msdfgen/libmsdfgen.so
    LIBS_@(OPENVR) += $(BUILD)/openvr_api/libopenvr_api.so
    LIBS_@(PHYSICS) += $(BUILD)/ode/libode.so
  endif
endif

## Android
ifeq ($(PLATFORM),android)
  CC = @(ANDROID_SDK)/sdk/ndk-bundle/toolchains/llvm/prebuilt/@(ANDROID_HOST_TAG)/bin/clang
  TOOLS = @(ANDROID_SDK)/sdk/build-tools/@(ANDROID_BUILD_TOOLS_VERSION)
  ANDROID_JAR = @(ANDROID_SDK)/sdk/platforms/android-@(ANDROID_VERSION)/android.jar
  GLUE = @(ANDROID_SDK)/sdk/ndk-bundle/sources/android/native_app_glue
  VRAPI_LIB_PATH = $(DEPS)/VrApi/Libs/Android/arm64-v8a/Release
  CFLAGS += --target=aarch64-linux-android@(ANDROID_VERSION)
  CFLAGS += -I$(GLUE)
  LDFLAGS += --target=aarch64-linux-android@(ANDROID_VERSION)
  LDFLAGS += -shared
  LDFLAGS += -landroid
  LDFLAGS += -lEGL
  LDFLAGS += -lGLESv3
  LIB = lib/arm64-v8a
  PREFIX = $(LIB)/lib
  SUFFIX = .so
  CFLAGS_@(GRAPHICS) += -DLOVR_GLES

  ifneq (@(ANDROID_ASSETS),)
    ANDROID_ASSETS = -A @(ANDROID_ASSETS)
  endif

  # Macros
  !dx = |> ^ DX %b^ dx --dex --output=%o %f |>
  !zipalign = |> ^ ZIPALIGN %f^ $(TOOLS)/zipalign -f 4 %f %o |>
  !apksigner = |> ^ APKSIGNER %o^ $(TOOLS)/apksigner sign --ks @(ANDROID_KEYSTORE) --ks-pass @(ANDROID_KEYSTORE_PASS) --out %o %f |>

  ifneq ($(BUILD),)
    ifeq (@(LUAJIT),y)
      CFLAGS += -I$(DEPS)/luajit/src
      LDFLAGS += -L$(BUILD)/luajit/src -lluajit
      STATIC_LIBS += $(BUILD)/luajit/src/libluajit.a
    else
      CFLAGS += -I$(DEPS)/lua/src -I$(BUILD)/lua
      LDFLAGS += -L$(BUILD)/lua -llua
    endif

    CFLAGS_@(AUDIO) += -I$(DEPS)/openal-soft/include
    CFLAGS_@(DATA) += -I$(DEPS)/msdfgen
    CFLAGS_@(PHYSICS) += -I$(DEPS)/ode/include -I$(BUILD)/ode/include
    CFLAGS_@(ENET) += -I$(DEPS)/enet/include
    CFLAGS_@(VRAPI) += -I$(DEPS)/VrApi/Include

    LDFLAGS_@(AUDIO) += -L$(BUILD)/openal -lopenal
    LDFLAGS_@(DATA) += -L$(BUILD)/lib_msdfgen -lmsdfgen
    LDFLAGS_@(PHYSICS) += -L$(BUILD)/ode -lode
    LDFLAGS_@(ENET) += -L$(BUILD)/enet -lenet
    LDFLAGS_@(VRAPI) += -L$(VRAPI_LIB_PATH) -lvrapi

    LIBS_@(AUDIO) += $(BUILD)/openal/libopenal.*so*
    LIBS_@(PHYSICS) += $(BUILD)/ode/libode.so
    LIBS_@(VRAPI) += $(VRAPI_LIB_PATH)/libvrapi.so
  endif
endif

## emscripten
ifeq ($(PLATFORM),web)
  SUFFIX = .html
  EXTRAS = lovr.js lovr.wasm
  EXTRAS_@(THREAD) += lovr.worker.js
  LDFLAGS += -s USE_GLFW=3
  LDFLAGS += -s USE_WEBGL2
  LDFLAGS += -s FULL_ES2
  LDFLAGS += -s FULL_ES3
  LDFLAGS += -s GL_PREINITIALIZED_CONTEXT
  LDFLAGS += -s FORCE_FILESYSTEM
  LDFLAGS += -s EXPORTED_FUNCTIONS="[
    LDFLAGS += '_main',
    LDFLAGS += '_lovrCanvasCreateFromHandle','_lovrGraphicsSetCamera',
    LDFLAGS += '_mat4_set','_mat4_identity','_mat4_invert','_mat4_multiply','_mat4_rotateQuat',
    LDFLAGS += '_mat4_transform','_mat4_transformDirection'
  LDFLAGS += ]"
  LDFLAGS_@(WEBXR) += --js-library $(ROOT)/src/resources/webxr.js
  LDFLAGS += --shell-file $(ROOT)/src/resources/lovr.html
  CFLAGS_@(THREAD) += -s USE_PTHREADS=1
  LDFLAGS_@(THREAD) += -s USE_PTHREADS=1
  CFLAGS_@(GRAPHICS) += -DLOVR_WEBGL

  CFLAGS += -I$(DEPS)/lua/src -I$(BUILD)/lua
  CFLAGS_@(DATA) += -I$(DEPS)/msdfgen
  CFLAGS_@(PHYSICS) += -I$(DEPS)/ode/include -I$(BUILD)/ode/include

  STATIC_LIBS += $(BUILD)/lua/liblua.a
  STATIC_LIBS_@(DATA) += $(BUILD)/lib_msdfgen/libmsdfgen.a
  STATIC_LIBS_@(PHYSICS) += $(BUILD)/ode/libode.a
endif

LIBS += $(LIBS_y)
CFLAGS += @(EXTRA_CFLAGS)
LDFLAGS += @(EXTRA_LDFLAGS)

## Macros
!cc = |> ^ CC %b^ $(CC) $(CFLAGS_y) $(CFLAGS) -o %o -c %f |>
!ld = |> ^ LD %o^ $(CC) -o %o %f $(LDFLAGS_y) $(LDFLAGS) |>
!xd = |> ^ XD %f^ xxd -i %f > %o |>
!cp = |> ^ CP %b^ cp %f %o |>