在OSX 10.11上使用SDL2和SDL2_image（在CLion 1.1中使用CMake 3.3）

Question

I'm following a couple of tutorials from reddit.com/r/limeoats to learn some game development in c++. I'm not experienced with CMake or CLion and have managed to google my way this far.

I had everything working up until I updated OSX to El Capitan (10.11). It seems that I can no longer use #include "SDL2/SDL.h" but instead need to use #include "SDL.h" Then it can find the SDL headers. The problem comes in when I also use #include "SDL_image.h" I get the following compiler error:

/Library/Frameworks/SDL2_image.framework/Headers/SDL_image.h:27:10:
fatal error: 'SDL2/SDL.h' file not found
#include <SDL2/SDL.h>
         ^

Looking into the header file in my Frameworks folder, it has #include <SDL2/SDL.h> but CMake is providing it as SDL.h for some reason after upgrading OSX to 10.11.

How do I get the SDL extensions to play nice with the updated header path? Or how do I get CMake to give me the old SDL2/SDL.h header path back?

Below is my CMakeLists.txt and I got the FindSDL2.cmake (note the comment on line 50) and FindSDL2_image.cmake from here .

cmake_minimum_required(VERSION 3.3)
project(Cavestory)

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${PROJECT_SOURCE_DIR}/cmake")

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_SOURCE_DIR}/bin)

include_directories(${PROJECT_SOURCE_DIR}/source/headers)

find_package(SDL2 REQUIRED)
find_package(SDL2_image REQUIRED >=2.0.0)

include_directories(${SDL2_INCLUDE_DIR})
include_directories(${SDL2_IMAGE_INCLUDE_DIR})

file(GLOB SOURCE_FILES "source/src/*.cpp")

add_executable(Cavestory ${SOURCE_FILES})

# One thread said this is all I should need to link SDL2
# but cannot get this to work at all
#target_link_libraries(Cavestory SDL2 SDL2_image)

#add_custom_command(TARGET Cavestory POST_BUILD
#        COMMAND ${CMAKE_COMMAND} -E copy_directory
#        ${CMAKE_SOURCE_DIR}/content $<TARGET_FILE_DIR:Cavestory>)

And my directory structure (if it helps)...

/Cavestory (root)
    CMakeLists.txt
    /bin
    /cmake
        FindSDL2.cmake
        FindSDL2_image.cmake
    /content
        /sprites
            **images**
    /docs
    /source
        /headers
           **header files**
        /src
           **code files**

Answer 1

I feel stupid... My CMakeLists.txt file is correct except i needed to add the following

target_link_libraries(Cavestory ${SDL2_LIBRARY} ${SDL2_IMAGE_LIBRARY})

instead of

target_link_libraries(Cavestory SDL2 SDL2_image)

This fixes the SDL linking issue from SDL_image.h; However, after updating to El Capitan, I can no longer reference SDL via #include "SDL2/SDL.h" and must use #include "SDL.h" -- while this is preferred, I'd like to know why/how this changed between OSX 10.10 and OSX 10.11.