aganea added a comment. Actually, I'm not sure the `DetectDistro()` does what it intends to do when cross-compiling: if I compile on Ubuntu and I forcibly specify `-target x86_64-linux` on the cmd-line, should it detect which Linux distro I'm on? Shouldn't it use the target triple, not the host triple? In the case of `CudaInstallationDetector()` it seems it should use the host triple, whereas in the case `clang/lib/Driver/ToolChains/Linux.cpp:Linux()` it adds flags for building the target, so it should take the target triple maybe. Should we pass a triple to `DetectDistro`?
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