无法让 SDL2 在 Windows 10 上与 MinGW、VSCode 和 CMake 一起使用

Question

I want to use VS Code, mingw and Cmake on Windows 10. I made a simple app:

-SDL2
-main.cpp
-CMakeLists.txt

This is the current content of my CMakeLists.txt

cmake_minimum_required(VERSION 3.19.0)

project(main VERSION 1.0.0)
list(APPEND CMAKE_PREFIX_PATH SDL2)
find_package(SDL2 REQUIRED)

add_executable(main main.cpp)

target_link_directories(main PRIVATE ${SDL2_INCLUDE_DIRS})
target_link_libraries(main PRIVATE ${SDL2_LIBRARIES})

I also have a SDL2Config.cmake inside my SDL2 folder:

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)

Building this results in 'SDL.h' not found, this is the include #include<SDL2.h> .

I also tried "vcpkg", this comes with triplets , the x64-windows triplet allows me to find the file but it wont compile since it's meant for VSCommunity. I tried the other triplets for mingw x64-mingw-dynamic and x64-mingw-static but they both failed building the package. This is the command I used to install SDL2 vcpkg install SDL2:triplet where triplet is one of the above mentioned.

Answer 1

If you use vcpkg you need to set the toolchain file somewhere. Either in CMakeLists.txt or you can set it in a command line argument:

1. CMakeLists.txt :

set(CMAKE_TOOLCHAIN_FILE ${CMAKE_CURRENT_SOURCE_DIR}/vcpkg/scripts/buildsystems/vcpkg.cmake
  CACHE STRING "Vcpkg toolchain file")

NB! Make sure that you get the path right!

2. As command line argument (I personally prefer this for easier portability)

cmake .. -DCMAKE_TOOLCHAIN_FILE=C:<your-path>/vcpkg/scripts/buildsystems/vcpkg.cmake

Read this on vcpkg integration .
The manifest mode is the ultimate pro tip, as this leads to clean CMakeLists.txt file and a fully portable (and painless) process.