Bug 1443590 is switching our official Windows builds to use clang-cl as the compiler.
Please keep an eye out for regressions and file a blocking bug for anything that might be fallout from this change. I'm especially interested in hearing about the quality of the debugging experience. It's possible that the patch may bounce and we'll go back and forth to MSVC for a while. You can check your build's compiler at `about:buildconfig`. Treeherder is running an additional set of MSVC jobs on mozilla-central to make sure we can fall back to a green MSVC if needed. Watch for more toolchain changes to come. The next steps after this will be to switch to lld-link and enable ThinLTO. That will open the door to a cross-language LTO that could inline calls between Rust and C++. In the longer term we can look into cross-compiling from Linux. But for now, shipping our most-used platform with an open-source compiler is a huge milestone in and of itself. Big thanks to everyone who has contributed to this effort on the Mozilla side, and also big thanks to the developers of LLVM and Chromium who helped make clang on Windows a realistic possibility. _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
