calebzulawski added a comment. In my situation, at least, I am the vendor of the toolchain and my configuration file contains `--sysroot=<CFGDIR>/../path/to/sysroot` with a known relative path to where the sysroot is distributed. Apple is unique in this situation, since I am not distributing the sysroot, so there is no equivalent to using the `<CFGDIR>` variable. There is no way to invoke `xcrun` or set `SDKROOT` from config files, only pass flags.
It is true that the build system could do it, but I think it's reasonable for the driver to make a guess when not provided. I don't think it's all that different than detection of libstdc++ from GCC installs. Repository: rG LLVM Github Monorepo CHANGES SINCE LAST ACTION https://reviews.llvm.org/D136315/new/ https://reviews.llvm.org/D136315 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
