tree 930c90017c9c0ee5e8d89bfdf15ad54960d35113
parent cf01afa3a25d7f5a1b6e38a9e4a37a6db1fe36fd
author Than McIntosh <thanm@google.com> 1652112535 -0400
committer Than McIntosh <thanm@google.com> 1652798649 +0000

env/windows: update paths for Windows C compilers

Update the setup script to pick C compilers that are more contemporary
(moving away from old GCC 5.X compilers). The new compilers were
downloaded from this release:

  https://github.com/mstorsjo/llvm-mingw/releases/tag/20220323

specifically these files:

   llvm-mingw-20220323-msvcrt-i686.zip
   llvm-mingw-20220323-msvcrt-x86_64.zip
   llvm-mingw-20220323-ucrt-aarch64.zip

To save space on the builders, I unpacked each of these zip files,
removed extra crud, and then re-packed in the form that the buildlet
expects. Specifically, the zip files contain cross-compilers for other
architectures, which we don't really need in our use case.

Updates golang/go#35006.

Details on pruning below.

    cd raw
    #-------------------------------------------------------------
    # Unpack x86_64
    unzip llvm-mingw-20220323-msvcrt-x86_64.zip
    cd llvm-mingw-20220323-msvcrt-x86_64
    # Remove ARM cross-compilation cruft.
    rm -rf aarch64-w64-mingw32 armv7-w64-mingw32
    rm -f bin/arm* bin/aarch64*
    # Get rid of python please.
    rm -rf python
    find lib -name "*.py" -print | xargs rm -f
    cd ..
    # rename / repack
    mv llvm-mingw-20220323-msvcrt-x86_64 gcc64
    tar zcf - ./gcc64 > llvm-mingw-20220323-msvcrt-x86_64.tar.gz
    #-------------------------------------------------------------
    # Unpack i686
    unzip llvm-mingw-20220323-msvcrt-i686.zip
    cd llvm-mingw-20220323-msvcrt-i686
    # Get rid of python please.
    rm -rf python
    find lib -name "*.py" -print | xargs rm -f
    # Remove ARM cross-compilation cruft.
    rm -rf aarch64-w64-mingw32 armv7-w64-mingw32
    rm -f bin/arm* bin/aarch64*
    # Remove x86_64 cross-compilation cruft.
    rm -rf x86_64-w64-mingw32
    rm -f bin/x86_64*
    # Repack
    cd ..
    mv llvm-mingw-20220323-msvcrt-i686 gcc32
    tar zcf - ./gcc32 > llvm-mingw-20220323-msvcrt-i686.tar.gz
    #
    #-------------------------------------------------------------
    # Unpack arm64
    unzip llvm-mingw-20220323-ucrt-aarch64.zip
    cd llvm-mingw-20220323-ucrt-aarch64
    # Get rid of python please.
    rm -rf python
    find lib -name "*.py" -print | xargs rm -f
    # Remove x86 cross-compilation cruft.
    rm -rf i686*
    rm -rf bin/i686*
    # Remove x86_64 cross-compilation cruft.
    rm -rf x86_64*
    rm -f bin/x86_64*
    # Repack
    cd ..
    mv llvm-mingw-20220323-ucrt-aarch64 llvm-aarch64
    tar zcf - ./llvm-aarch64 > llvm-mingw-20220323-ucrt-aarch64.tar.gz

Change-Id: Iaccc84d4c9ef235c892242d7cca53aefc0d3971b
Reviewed-on: https://go-review.googlesource.com/c/build/+/405154
Reviewed-by: Carlos Amedee <carlos@golang.org>
Reviewed-by: Heschi Kreinick <heschi@google.com>