Cmake actions build for Windows x86 - github

Question

I have a Cmake/wxWidgets project that builds fine on my pc.
I compile wxWidgets using nmake /f makefile.vc BUILD=release TARGET_CPU=X86 and generate the CMake project using cmake .. -G "Visual Studio 16 2019" -A Win32 -DCMAKE_CONFIGURATION_TYPES=Release.
Like I wrote, this compiles fine on my pc. When I want to build it using a github action on Windows 2019 Image I first pull wxWidgets, compile it using the above statement, generate wxWidgets using the aboce statement and trigger the build using a cmd-script containing "%programfiles(x86)%\Microsoft Visual Studio\2019\Enterprise\MSBuild\Current\Bin\msbuild.exe" ".\build\NaCl-Configurator.sln" /p:Configuration=Release /p:Platform=Win32 /p:PlatformTarget=x86
But when doing this I always get the following error:
wxmsw31u_core.lib(corelib_wincmn.obj) : fatal error LNK1112: module machine type 'x64' conflicts with target machine type 'x86' [D:\a\abc\abc\build\abc.vcxproj]
If I switch everything to x64 it compiles fine, but I need a x86 build. Is there any system setting I'm missing?

Answer 1

This is not an answer, this is a recommendation.
But after spending hours looking into your issue, I am seriously pulling my hair at the Microsoft documentation for MSBuild.
Just use Ninja. This is what we use to build our x64/x86 binaries.
You might need to learn a little bit about cmake toolchains, but at least you don't have to deal with this msbuild nonsense.
Ninja is faster, works much better with cmake, is a very tiny executable, etc.
Seriously using msbuild/visual-studio on your servers isn't worth it.
Again I apologize this isn't a direct answer to your question, if you do continue down this path I'm curious to see the answer.
====================================================
What I found out though:
I will say I'm very confused about the difference between PlatformTarget and Platform. Because all the visual studio solutions I generate don't even have PlatformTarget as a property anywhere. I scanned the generated solution files and didn't see this anywhere. Granted I'm using vs2019 so maybe it's deprecated I dunno.
Prefer to expand the /p -> /property that's just good practice for your build server scripts.
Perhaps try using the platform property "x86" instead. I literally couldn't find concrete information on which was preferred/correct. Win32/x86.
And as a final guess please start printing out your compiler, and toolchain information from cmake.
Resources:
How do I specify the platform for MSBuild?
https://learn.microsoft.com/en-us/visualstudio/msbuild/msbuild-target-framework-and-target-platform?view=vs-2019
Me looking at the msbuild command line, and looking at my generated visual studio solutions.

Answer 2

I was using another github action to access nmake to build wxWidgets. Within this action I had to specify the architecture.
So using
- name: Preparing nmake
uses: ilammy/msvc-dev-cmd#v1
with:
arch: x86
- name: start building wx widgtes
run: |
cd ${{ env.WXWIN }}${{ env.wxMSW_VER }}\build\msw
nmake /f makefile.vc BUILD=release TARGET_CPU=X86
and then going on did the trick. It was only the with: arch: x86 that was missing