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Small tweaks for clang cross compilation cases #37

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Small tweaks for clang cross compilation cases #37

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andrewvoznytsa
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@andrewvoznytsa andrewvoznytsa commented Dec 21, 2022 •
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  • Add --gcc-toolchain to clang flags if sysroot is used (sometimes clang is unable to auto-detect gcc toolchain)
  • Add gcc_toolchain option for clang - for the case when you are cross-compiling on Ubuntu for Ubuntu via Ubuntu's multiach support (without use_sysroot=true)
  • Add dwarf_version argument for clang - dwarf 4+ is not always compatible with binutils used for target OS
  • Set clang's --target for x86/x64 linux builds too - in case of cross-compilation when host and target cpu are the same (x86_64) but OSes are different clang used host tools to compile (in case of x86_64-apple-darwin21.4.0 to x86_64-linux-gnu cross compilation the host's stuff was used)
  • Initial win/clang cross-compilation support (macOS/Linux=>Windows). Currently requires //.msvc.toolchain file that should have toolchain data in the same format as toolchain/win/toolchain.py outputs

@timniederhausen
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Nice job, thanks for doing that!

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@andrewvoznytsa @timniederhausen