This introduces a CMakePresets file for both Unix-likes and Windows that replace the old CMakeSettings.
It adds presets for **Debug** and **Release** profiles for both **x64** and **ARM64** architectures, as well as **Generic builds**.
Presets can be used using[ Visual Studio's built-in CMakePresets support](https://learn.microsoft.com/en-us/cpp/build/cmake-presets-vs?view=msvc-170), or [Visual Studio Code's CMake Tools](https://marketplace.visualstudio.com/items?itemName=ms-vscode.cmake-tools) extension.
They can also be used from the command line, like so:
- x64/Unix-like/Ninja:
- Configure: `cmake --preset ninja-release-x64`
- Build: `cmake --build --preset ninja-build-release-x64`
- Configure + Build: `cmake --workflow --preset ninja-release-x64`
- ARM64/Windows/Visual Studio:
- Configure: `cmake --preset visualstudio-release-arm64`
- Build: `cmake --build --preset visualstudio-build-release-arm64`
- Configure + Build: `cmake --workflow --preset visualstudio-release-arm64`
The Ninja generator is available to both Windows and Unix-likes, while the Visual Studio Generator is only available on Windows.
**Cross-compiling**
On **Windows**, the Visual Studio generator automatically takes care of everything, you just need to select an ARM64 preset.
On **Unix-likes**, to cross-compile you need to install a cross-compiler and (optionally) a sysroot of the target system.
Here is an example to compile from x64 to ARM64 with a sysroot:
- `cmake --preset ninja-release-arm64 -DCMAKE_C_COMPILER=aarch64-linux-gnu-gcc -DCMAKE_CXX_COMPILER=aarch64-linux-gnu-g++ -DCMAKE_SYSROOT=/opt/sysroots/aarch64-linux-gnu`
- `cmake --build --preset ninja-build-release-arm64`
You will need a sysroot to link against Qt, since we do not vendor it in on platforms other than Windows.
**User presets**
A `CMakeUserPresets.json` file may be created locally at the root of the project to further customize your presets.
For example, here are the user presets I used to test this PR on Arch Linux with a generic Arch Linux ARM sysroot:
```json
{
"version": 10,
"configurePresets": [
{
"name": "gcc-debug-arm64",
"inherits": "ninja-debug-arm64",
"cacheVariables": {
"CMAKE_C_COMPILER": "aarch64-linux-gnu-gcc",
"CMAKE_CXX_COMPILER": "aarch64-linux-gnu-g++",
"CMAKE_EXE_LINKER_FLAGS": "-L/opt/sysroots/ArchLinuxARM/lib",
"CMAKE_SYSROOT": "/opt/sysroots/ArchLinuxARM"
}
},
{
"name": "clang-debug-arm64",
"inherits": "ninja-debug-arm64",
"cacheVariables": {
"CMAKE_C_COMPILER": "clang",
"CMAKE_CXX_COMPILER": "clang++",
"CMAKE_C_FLAGS": "-target aarch64-linux-gnu",
"CMAKE_CXX_FLAGS": "-target aarch64-linux-gnu",
"CMAKE_SYSROOT": "/opt/sysroots/ArchLinuxARM"
}
},
{
"name": "clang-debug-x64",
"inherits": "ninja-debug-x64",
"cacheVariables": {
"CMAKE_C_COMPILER": "clang",
"CMAKE_CXX_COMPILER": "clang++"
}
}
],
"buildPresets": [
{
"name": "gcc-build-debug-arm64",
"configurePreset": "gcc-debug-arm64"
},
{
"name": "clang-build-debug-arm64",
"configurePreset": "clang-debug-arm64"
},
{
"name": "clang-build-debug-x64",
"configurePreset": "clang-debug-x64"
}
],
"workflowPresets": [
{
"name": "gcc-debug-arm64",
"steps": [
{ "type": "configure", "name": "gcc-debug-arm64" },
{ "type": "build", "name": "gcc-build-debug-arm64" }
]
},
{
"name": "clang-debug-arm64",
"steps": [
{ "type": "configure", "name": "clang-debug-arm64" },
{ "type": "build", "name": "clang-build-debug-arm64" }
]
},
{
"name": "clang-debug-x64",
"steps": [
{ "type": "configure", "name": "clang-debug-x64" },
{ "type": "build", "name": "clang-build-debug-x64" }
]
}
]
}
```
They are then used like so:
Configure + Build with GCC: `cmake --workflow --preset gcc-debug-arm64`
Configure + Build with Clang: `cmake --workflow --preset clang-debug-arm64`
Configure + Build with Clang (x64): `cmake --workflow --preset clang-debug-x64`
*Addendum: It should also now be possible to cross-compile from Windows to Unix-likes, and Unix-like to other Unix-like (e.g. Linux -> FreeBSD), however this is untested.*
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