LLVM: Always pass host/target info to compiler-rt/libstdcxxClang#84531
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Ericson2314 merged 1 commit intoNixOS:masterfrom Apr 14, 2020
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LLVM: Always pass host/target info to compiler-rt/libstdcxxClang#84531Ericson2314 merged 1 commit intoNixOS:masterfrom
Ericson2314 merged 1 commit intoNixOS:masterfrom
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Oh this reminds me, there are some things I synced up to version 9 on master and 20.03, but not 10. Let me do that first. |
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Did that in #85167. I suppose I can rebase this later today. |
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I guess this is just barely in-bounds for master rather than staging. |
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@Ericson2314 Thanks! |
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I think this causes the regression in #85622 |
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Here, for LLVM 5-10, information about the host platform is always passed to compiler-rt's build system (even if
stdenv.hostPlatform.useLLVMisn't set) and to clang as-targetand compiler-rt flags in libstdcxxClang's CC wrapper. These fixes allowllvmPackages_*.stdenvto be used for cross builds and fixes #40934I'd appreciate review from @LnL7 and @ElvishJerricco, who I know have poked at this stuff before, as well as anyone else familiar with the cross build machinery.
I wasn't able to figure out how the clang-wrapper gets crtbegin.o, etc. in the non cross case, so there's a good chance these flags should be added somewhere else.