How to Resolve SDL2 Header Inclusion Problems with CMake?

Solving SDL2 Inclusion Issues with CMake

Problem:

When developing an SDL2 project in CLion, "#include " cannot find the necessary header file.

Solution:

For Linux Systems:

1. Ensure that CMake version 3.7 or later is installed.
2. Add the following lines to your CMakeLists.txt file:

<code class="cmake">find_package(SDL2 REQUIRED)
include_directories(SDL2Test ${SDL2_INCLUDE_DIRS})

add_executable(SDL2Test Main.cpp)
target_link_libraries(SDL2Test ${SDL2_LIBRARIES})</code>

For Windows Systems:

1. Download and extract the SDL2 development package.
2. Create a file named sdl-config.cmake in the extracted directory with the following content:

<code class="cmake">set(SDL2_INCLUDE_DIRS "${CMAKE_CURRENT_LIST_DIR}/include")

# Support both 32 and 64 bit builds
if (${CMAKE_SIZEOF_VOID_P} MATCHES 8)
  set(SDL2_LIBRARIES "${CMAKE_CURRENT_LIST_DIR}/lib/x64/SDL2.lib;${CMAKE_CURRENT_LIST_DIR}/lib/x64/SDL2main.lib")
else ()
  set(SDL2_LIBRARIES "${CMAKE_CURRENT_LIST_DIR}/lib/x86/SDL2.lib;${CMAKE_CURRENT_LIST_DIR}/lib/x86/SDL2main.lib")
endif ()

string(STRIP "${SDL2_LIBRARIES}" SDL2_LIBRARIES)</code>

3. In the CMake-GUI application, navigate to the "SDL2_DIR" variable and point it to the extracted SDL2 directory.

Post-Solution:

SDL2 headers can now be included simply by writing #include "SDL.h" in your code.

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