[CMake] Implement Building for windows with cmake

Implement all needed functionalities to build for windows with cmake on Windows.

changed milestone to %Lyra

assigned to @raul.radu

I've tried to build with CMake under windows and the current code in b977301f (main) works.

What I've done is the following:

• Download the Qt online installer
• Install only Qt5.15.2 for mingw8.1.0, mingw8.1.0 and cmake
• Add to PATH the tools bin directories paths
• Run cmake -G "MinGW Makefiles" -Bbuild . and then cmake --build build

The same should work using other compilers (e.g. MSVC).

If you can achieve the same, we can close this issue and finally remove SkywardHub.pro. I did not looked into how to setup Qt Creator to use the CMake file but I think we could avoid it all together.

added buildsystem label

changed title from [Buildsystem] Implement Building for windows with cmake to [CMake] Implement Building for windows with cmake

I'll me a bit more clear about hot to set the PATH of the tools:

• First you need the path to CMake.
  • If you have installed CMake separately from Qt, they you probably already have it registered in the path (you can just try to type cmake --version in the terminal). If it is not in the path you can add C:\Program Files\CMake\bin
  • If you have installed CMake with Qt, then you do not have it in PATH. Add C:\Qt\Tools\CMake_64\bin
• And you also need the path to find Qt stuffs. This depends on what compiler you use, for mingw: C:\Qt\5.15.2\mingw81_64\bin

To edit the PATH in Windows look it up! (here)

Let's recap.

PATH setup

PATH variable	Description
C:\Program Files\CMake\bin	CMake path when installed stand-alone
C:\Qt\Tools\CMake_64\bin	CMake path when installed with Qt
C:\Qt\5.15.2\mingw81_64\bin	Path to Qt for mingw 8.1.0
C:\Qt\5.15.2\msvc2015_64\bin	Path to Qt for MSVC 2015
C:\Qt\Tools\mingw810_64\bin	Path to mingw installed with Qt

Basically you need 3 things in you path:

• CMake
• A compiler
• Qt stuffs for the compiler you want to use

What to do for a simple new installation

1. Download the Qt online installer
2. Select only Qt5.15.2 for mingw8.1.0, mingw8.1.0 and cmake
3. Add these PATH variables

PATH variable	Description
C:\Qt\Tools\CMake_64\bin	CMake path when installed with Qt
C:\Qt\Tools\mingw810_64\bin	Path to mingw installed with Qt
C:\Qt\5.15.2\mingw81_64\bin	Path to Qt for mingw 8.1.0

4. Run cmake -G "MinGW Makefiles" -Bbuild . and then cmake --build build

I opened !45 (merged) that implements building with MSVC or LLVM. I would honestly avoid MinGW at all costs, as that's not the recommended way to build apps on Windows.

Here's the setup:

Installation steps

1. Download the Qt online installer
2. Select only Qt 5.15.2 for msvc2019
3. Download and run the Visual Studio Build Tools 2022 installer
4. Choose the "C++ Desktop App development" item and only select the MSVC v143 and Windows 11 SDK entries (deselect everything else).
5. Add the following entries to the system PATH variable:

PATH variable	Description
C:\Qt\5.15.2\msvc2019_64\bin	Path to Qt for MSVC 2019

Additional steps for LLVM (optional)

In case you want to build with Ninja and LLVM (clang) you also need the following:

6. Install LLVM: winget install llvm
7. Install Ninja Build: winget install Ninja-build.Ninja
8. Add the following entries to the system PATH variable:

PATH variable	Description
C:\Program Files\LLVM\bin	LLVM binaries path (i.e. clang.exe)

After !45 (merged) is merged, sbs will work just like on Linux.

closed