How to set build type to 32 bit in Github actions for CMake C++ project

Question

I need to have automated testing on github for a CMake C++ project. For this I want to use a 32 bit Windows machine (some of our packages are only in 32 bit), but I couldn't find an easy method to do this. I have tried to set CMAKE_C_COMPILER and CMAKE_CXX_COMPILER in the environment to the x86 compiler, but that did not do anything.

Is there a keyword that I can add either to github actions environment, or to the CMake so that my project does compile to a 32 bit program on github?

Answer 1

As stated in the comments from vre the cmake -A Win32 tag works on github: If you also want the host to be x86 run the following command: cmake -S SOURCEFOLDER -B BUILDFOLDER -T host=x86 -A Win32