[PATCH 0/5] MR7205: winecrt0: Add builtin functions for msvc/arm mode

[Martin Storsjö]

Since 9b8409fce4da18e3d9a914a9e5831d10eb9052de, a PE compiler is required for 32 bit arm.

That can either be supplied by using plain Clang (from a distro), or llvm-mingw. However when using plain Clang (in MSVC mode), we're lacking compiler builtin functions that either would be provided by MSVC libraries or by compiler-rt libraries bundled in llvm-mingw.

Vendor a copy of the relevant files from compiler-rt and include them when building for arm in MSVC mode.

This allows building a functional wine for 32 bit arm without requiring third party tools such as llvm-mingw.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/7205