Building a x86 application with CMake, Ninja and Clang on x64 Windows

Question

I want to build an x86 Windows application on my x64 Windows machine.

I use CMake, Ninja, clang-cl, lld-link and the VS Build Tools 2017 with the following CMakeList

Answer 1

CMake Issue #16259: "Ninja generator fails with clang-cl when mixing 64/32 bit clang and Visual Studio Environment" suggests utilizing environment variables:

The Ninja generator requires that the environment already be configured for the compiler to produce the desired target. You need to do

>set CC=clang-cl
>set CFLAGS=-m32
>set CXX=clang-cl
>set CXXFLAGS=-m32

to tell CMake how to invoke the compiler for the desired target.