Cross compiler for Windows On ARM64?

[ghost]

Cross-compiling from x64 Windows to ARM64 Windows. What do you think about it?

[brechtsanders]

I have been thinking about it for a long time. And not just thinking.

I have actually bought a Windows Dev Kit 2023 to actually have a Windows on ARM system (see #130), and I have tried to get GCC to build on it.

LLVM already works (the version from https://github.com/mstorsjo/llvm-mingw), and I was able to build a lot of packages for native Windows on ARM64 already.

For GCC more work is needed. I asked about this here https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108678 and recently got an answer that GCC 15 stage 1 will have changes specifically for this platform. And the good news is that this stage was just started a few days ago (see: https://gcc.gnu.org/develop.html).