sepavloff added inline comments.
================ Comment at: clang/test/Driver/config-file3.c:27 -//--- Invocation qqq-clang-g++ tries to find config file qqq-clang-g++.cfg first. +//--- Invocation x86_64-unknown-linux-gnu-clang-g++ tries x86_64-unknown-linux-gnu-clang++.cfg first. // ---------------- mgorny wrote: > sepavloff wrote: > > mgorny wrote: > > > arichardson wrote: > > > > sepavloff wrote: > > > > > Tests must check the case when target prefix is not a real triple as > > > > > in the original test (qqq-clang). > > > > It would be quite important for me that this continues to work. I made > > > > use of that in the CheriBSD toolchain when creating [[ > > > > https://github.com/CTSRD-CHERI/cheribuild/blob/master/pycheribuild/projects/cross/llvm.py#L499 > > > > | symlinked binaries to easily build for different ABIs]] such as > > > > `cheribsd-riscv64-hybrid-clang++` and > > > > `cheribsd-riscv64-purecap-clang-cpp`. It appears this previously only > > > > worked if the prefix did not start with a valid triple (which is why I > > > > put the OS before the architecture). I think it would also be nice if > > > > the whole prefix was checked even if it starts with a valid triple, but > > > > this does not need to be changed in this patch (haven't looked at it in > > > > detail so this might actually work). > > > If the prefix is not a valid triple, then clang ignores it and uses host > > > triple instead. And now we're back to square one. If I check both > > > variants, it's too complex. If I don't, it's bad too. > > Our customers use this feature. Target prefix may designate, for example, > > debug build or build with specific framework. > How are we supposed to avoid the "absurd" case where x86_64 configs are > loaded for `-m32` invocation then? In this case overloading target does not makes sense. You need to analyze `RealTriple` in `Driver::loadDefaultConfigFiles` and if it is wrong, use target prefix as if it is real target. CHANGES SINCE LAST ACTION https://reviews.llvm.org/D134337/new/ https://reviews.llvm.org/D134337 _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
