#**************************************************************************************************
#
#   raylib makefile for Desktop platforms, Raspberry Pi, Android and HTML5
#
#   Copyright (c) 2013-2018 Ramon Santamaria (@raysan5)
#
#   This software is provided "as-is", without any express or implied warranty. In no event
#   will the authors be held liable for any damages arising from the use of this software.
#
#   Permission is granted to anyone to use this software for any purpose, including commercial
#   applications, and to alter it and redistribute it freely, subject to the following restrictions:
#
#     1. The origin of this software must not be misrepresented; you must not claim that you
#     wrote the original software. If you use this software in a product, an acknowledgment
#     in the product documentation would be appreciated but is not required.
#
#     2. Altered source versions must be plainly marked as such, and must not be misrepresented
#     as being the original software.
#
#     3. This notice may not be removed or altered from any source distribution.
#
#**************************************************************************************************

.PHONY: all clean

# Define required raylib variables
# WARNING: To compile to HTML5, code must be redesigned to use emscripten.h and emscripten_set_main_loop()
PLATFORM ?= PLATFORM_DESKTOP
RAYLIB_PATH ?= ../..
PROJECT_NAME ?= simple_game

# Default path for raylib on Raspberry Pi, if installed in different path, update it!
ifeq ($(PLATFORM),PLATFORM_RPI)
    RAYLIB_PATH ?= /home/pi/raylib
endif

# Library type used for raylib: STATIC (.a) or SHARED (.so/.dll)
RAYLIB_LIBTYPE ?= STATIC

# Use external GLFW library instead of rglfw module
USE_EXTERNAL_GLFW ?= FALSE

# Use Wayland display server protocol on Linux desktop
# by default it uses X11 windowing system
USE_WAYLAND_DISPLAY ?= FALSE

# NOTE: On PLATFORM_WEB OpenAL Soft backend is used by default (check raylib/src/Makefile)


# Determine PLATFORM_OS in case PLATFORM_DESKTOP selected
ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    # No uname.exe on MinGW!, but OS=Windows_NT on Windows!
    # ifeq ($(UNAME),Msys) -> Windows
    ifeq ($(OS),Windows_NT)
        PLATFORM_OS=WINDOWS
    else
        UNAMEOS=$(shell uname)
        ifeq ($(UNAMEOS),Linux)
            PLATFORM_OS=LINUX
        endif
        ifeq ($(UNAMEOS),FreeBSD)
            PLATFORM_OS=FREEBSD
        endif
        ifeq ($(UNAMEOS),Darwin)
            PLATFORM_OS=OSX
        endif
    endif
endif
ifeq ($(PLATFORM),PLATFORM_RPI)
    UNAMEOS=$(shell uname)
    ifeq ($(UNAMEOS),Linux)
        PLATFORM_OS=LINUX
    endif
endif

ifeq ($(PLATFORM),PLATFORM_WEB)
    # Emscripten required variables
    EMSDK_PATH = C:/emsdk
    EMSCRIPTEN_VERSION = 1.37.28
    CLANG_VERSION=e1.37.28_64bit
    PYTHON_VERSION=2.7.5.3_64bit
    NODE_VERSION=4.1.1_64bit
    export PATH=$(EMSDK_PATH);$(EMSDK_PATH)\clang\$(CLANG_VERSION);$(EMSDK_PATH)\node\$(NODE_VERSION)\bin;$(EMSDK_PATH)\python\$(PYTHON_VERSION);$(EMSDK_PATH)\emscripten\$(EMSCRIPTEN_VERSION);C:\raylib\MinGW\bin:$$(PATH)
    EMSCRIPTEN=$(EMSDK_PATH)\emscripten\$(EMSCRIPTEN_VERSION)
endif

RAYLIB_RELEASE_PATH ?= $(RAYLIB_PATH)/release/libs

# Define raylib release directory for compiled library
ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),WINDOWS)
        RAYLIB_RELEASE_PATH = $(RAYLIB_PATH)/release/libs/win32/mingw32
    endif
    ifeq ($(PLATFORM_OS),LINUX)
        RAYLIB_RELEASE_PATH = $(RAYLIB_PATH)/release/libs/linux
    endif
    ifeq ($(PLATFORM_OS),OSX)
        RAYLIB_RELEASE_PATH = $(RAYLIB_PATH)/release/libs/osx
    endif
    ifeq ($(PLATFORM_OS),FREEBSD)
        RAYLIB_RELEASE_PATH = $(RAYLIB_PATH)/release/libs/freebsd
    endif
endif
ifeq ($(PLATFORM),PLATFORM_RPI)
    RAYLIB_RELEASE_PATH = $(RAYLIB_PATH)/release/libs/rpi
endif
ifeq ($(PLATFORM),PLATFORM_WEB)
    RAYLIB_RELEASE_PATH = $(RAYLIB_PATH)/release/libs/html5
endif

# Define default C compiler: gcc
# NOTE: define g++ compiler if using C++
CC = gcc

ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),OSX)
        # OSX default compiler
        CC = clang
    endif
    ifeq ($(PLATFORM_OS),FREEBSD)
        # FreeBSD default compiler
        CC = clang
    endif
endif
ifeq ($(PLATFORM),PLATFORM_RPI)
    ifeq ($(USE_RPI_CROSS_COMPILER),TRUE)
        # Define RPI cross-compiler
        #CC = armv6j-hardfloat-linux-gnueabi-gcc
        CC = $(RPI_TOOLCHAIN)/bin/arm-linux-gnueabihf-gcc
    endif
endif
ifeq ($(PLATFORM),PLATFORM_WEB)
    # HTML5 emscripten compiler
    CC = emcc
endif

# Define default make program: Mingw32-make
MAKE = mingw32-make

ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),LINUX)
        MAKE = make
    endif
endif

# Define compiler flags:
#  -O1                  defines optimization level
#  -g                   enable debugging
#  -s                   strip unnecessary data from build
#  -Wall                turns on most, but not all, compiler warnings
#  -std=c99             defines C language mode (standard C from 1999 revision)
#  -std=gnu99           defines C language mode (GNU C from 1999 revision)
#  -Wno-missing-braces  ignore invalid warning (GCC bug 53119)
#  -D_DEFAULT_SOURCE    use with -std=c99 on Linux and PLATFORM_WEB, required for timespec
CFLAGS += -O1 -s -Wall -std=c99 -D_DEFAULT_SOURCE -Wno-missing-braces

# Additional flags for compiler (if desired)
#CFLAGS += -Wextra -Wmissing-prototypes -Wstrict-prototypes
ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),WINDOWS)
        # resources file contains windows exe icon
        # -Wl,--subsystem,windows hides the console window
        CFLAGS += $(RAYLIB_PATH)/src/raylib_icon -Wl,--subsystem,windows
    endif
    ifeq ($(PLATFORM_OS),LINUX)
        CFLAGS += -no-pie -D_DEFAULT_SOURCE
    endif
endif
ifeq ($(PLATFORM),PLATFORM_RPI)
    CFLAGS += -std=gnu99
endif
ifeq ($(PLATFORM),PLATFORM_WEB)
    # -O2                        # if used, also set --memory-init-file 0
    # --memory-init-file 0       # to avoid an external memory initialization code file (.mem)
    # -s ALLOW_MEMORY_GROWTH=1   # to allow memory resizing
    # -s TOTAL_MEMORY=16777216   # to specify heap memory size (default = 16MB)
    # -s USE_PTHREADS=1          # multithreading support
    # -s WASM=1                  # support Web Assembly (https://github.com/kripken/emscripten/wiki/WebAssembly)
    # --preload-file resources   # specify a resources folder for data compilation
    CFLAGS += -s USE_GLFW=3 -s ASSERTIONS=1 -s WASM=1 --profiling --preload-file resources
    
    # Define a custom shell .html and output extension
    CFLAGS += --shell-file $(RAYLIB_PATH)\templates\web_shell\shell.html
    EXT = .html
endif

# Define include paths for required headers
# NOTE: Several external required libraries (stb and others)
INCLUDE_PATHS = -I. -I$(RAYLIB_PATH)/release/include -I$(RAYLIB_PATH)/src -I$(RAYLIB_PATH)/src/external

# Define additional directories containing required header files
ifeq ($(PLATFORM),PLATFORM_RPI)
    # RPI requried libraries
    INCLUDE_PATHS += -I/opt/vc/include
    INCLUDE_PATHS += -I/opt/vc/include/interface/vmcs_host/linux
    INCLUDE_PATHS += -I/opt/vc/include/interface/vcos/pthreads
endif

# Define library paths containing required libs
LDFLAGS = -L. -L$(RAYLIB_RELEASE_PATH) -L$(RAYLIB_PATH)/src 

ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),FREEBSD)
        INCLUDE_PATHS += -I/usr/local/include
        LDFLAGS += -L. -Lsrc -L/usr/local/lib
    endif
endif

ifeq ($(PLATFORM),PLATFORM_RPI)
    LDFLAGS += -L/opt/vc/lib
endif

# Define any libraries required on linking
# if you want to link libraries (libname.so or libname.a), use the -lname
ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),WINDOWS)
        # Libraries for Windows desktop compilation
        LDLIBS = -lraylib -lopengl32 -lgdi32
        
        # Required for physac examples
        #LDLIBS += -static -lpthread
    endif
    ifeq ($(PLATFORM_OS),LINUX)
        # Libraries for Debian GNU/Linux desktop compiling
        # NOTE: Required packages: libegl1-mesa-dev
        LDLIBS = -lraylib -lGL -lm -lpthread -ldl -lrt
        
        # On X11 requires also below libraries
        LDLIBS += -lX11
        # NOTE: It seems additional libraries are not required any more, latest GLFW just dlopen them
        #LDLIBS += -lXrandr -lXinerama -lXi -lXxf86vm -lXcursor
        
        # On Wayland windowing system, additional libraries requires
        ifeq ($(USE_WAYLAND_DISPLAY),TRUE)
            LDLIBS += -lwayland-client -lwayland-cursor -lwayland-egl -lxkbcommon
        endif
    endif
    ifeq ($(PLATFORM_OS),OSX)
        # Libraries for OSX 10.9 desktop compiling
        # NOTE: Required packages: libopenal-dev libegl1-mesa-dev
        LDLIBS = -lraylib -framework OpenGL -framework OpenAL -framework Cocoa
    endif
    ifeq ($(PLATFORM_OS),FREEBSD)
        # Libraries for FreeBSD desktop compiling
        # NOTE: Required packages: mesa-libs
        LDLIBS = -lraylib -lGL -lpthread -lm

        # On XWindow requires also below libraries
        LDLIBS += -lX11 -lXrandr -lXinerama -lXi -lXxf86vm -lXcursor
    endif
    ifeq ($(USE_EXTERNAL_GLFW),TRUE)
        # NOTE: It could require additional packages installed: libglfw3-dev
        LDLIBS += -lglfw
    endif
endif
ifeq ($(PLATFORM),PLATFORM_RPI)
    # Libraries for Raspberry Pi compiling
    # NOTE: Required packages: libasound2-dev (ALSA)
    LDLIBS = -lraylib -lbrcmGLESv2 -lbrcmEGL -lpthread -lrt -lm -lbcm_host -ldl
endif
ifeq ($(PLATFORM),PLATFORM_WEB)
    # Libraries for web (HTML5) compiling
    LDLIBS = $(RAYLIB_RELEASE_PATH)/libraylib.bc
endif

# Define all source files required
PROJECT_SOURCE_FILES ?= simple_game.c

# Define all object files from source files
OBJS = $(patsubst %.c, %.o, $(PROJECT_SOURCE_FILES))

# For Android platform we call a custom Makefile.Android
ifeq ($(PLATFORM),PLATFORM_ANDROID)
    MAKEFILE_PARAMS = -f Makefile.Android 
    export PROJECT_NAME
    export PROJECT_SOURCE_FILES
else
    MAKEFILE_PARAMS = $(PROJECT_NAME)
endif

# Default target entry
# NOTE: We call this Makefile target or Makefile.Android target
all:
	$(MAKE) $(MAKEFILE_PARAMS)

# Project target defined by PROJECT_NAME
$(PROJECT_NAME): $(OBJS)
	$(CC) -o $(PROJECT_NAME)$(EXT) $(OBJS) $(CFLAGS) $(INCLUDE_PATHS) $(LDFLAGS) $(LDLIBS) -D$(PLATFORM)

# Compile source files
# NOTE: This pattern will compile every module defined on $(OBJS)
%.o: %.c
	$(CC) -c $< -o $@ $(CFLAGS) $(INCLUDE_PATHS) -D$(PLATFORM)

# Clean everything
clean:
ifeq ($(PLATFORM),PLATFORM_DESKTOP)
    ifeq ($(PLATFORM_OS),WINDOWS)
		del *.o *.exe /s
    endif
    ifeq ($(PLATFORM_OS),LINUX)
		find -type f -executable | xargs file -i | grep -E 'x-object|x-archive|x-sharedlib|x-executable' | rev | cut -d ':' -f 2- | rev | xargs rm -f
    endif
    ifeq ($(PLATFORM_OS),OSX)
		find . -type f -perm +ugo+x -delete
		rm -f *.o
    endif
endif
ifeq ($(PLATFORM),PLATFORM_RPI)
	find . -type f -executable -delete
	rm -f *.o
endif
ifeq ($(PLATFORM),PLATFORM_WEB)
	del *.o *.html *.js
endif
	@echo Cleaning done