llvmPackages_6.compiler-rt: Backport cross-compilation fixes... #61500
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| Get crtbegin and crtend without compiler GCC! PR is at https://reviews.llvm.org/D28791 | |||
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Someone noticed this:
http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20190513/652039.html
We probably want to wait for that to be resolved.
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Also, I think we can use fetchpatch here as well IIRC
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The patch in question is already being applied to LLVM 7 to make cross-compilation work, I merely backported it to 6 (I'm doing Haskell cross-compilation and GHC 8.6.4 needs LLVM 6.) Perhaps since this is already in place for LLVM 7 it could just be merged for LLVM 6 and then all the LLVMs could be updated with the resolution to the above thread?
Also, I'm cross-compiling to ARM and have not encountered the mentioned issue with the patched LLVM v6 in this PR.
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You shouldn't need clang for GHC cross compilation. LLVM should just work on its own. Are you on nixpkgs-unstable or 19.03?
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I'm using unstable, but I'm using IOHK's haskell nix infrastructure. I'm attempting to use clang as the compiler for c files included with Haskell libraries, trying to work around some issues with iserv and template Haskell during cross-compilation.
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On the other hand, it took longer into the build than I expected, but that error from the mailing list did now show up. So I guess this isn't ready to be merged yet.
matthewbauer
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6.topic: cross-compilation
…from llvmPackages_7.compiler-rt
Motivation for this change
Things done
sandboxinnix.confon non-NixOS)nix-shell -p nix-review --run "nix-review wip"./result/bin/)nix path-info -Sbefore and after)