[vcpkg msys] Fix msys2

[strega-nil]

Update to 2020-07-20. Unfortunately, this drops support for building on x86

cc @ras0219-msft @BillyONeal

[MVoz]

vcpkg_acquire_msys

3 mirror download

  if(_vam_HOST_ARCHITECTURE STREQUAL "AMD64")
    set(TOOLSUBPATH msys64)
    set(URLS
      "http://repo.msys2.org/distrib/x86_64/msys2-base-x86_64-20200602.tar.xz"
      "https://github.com/msys2/msys2-installer/releases/download/2020-06-02/msys2-base-x86_64-20200602.tar.xz"
      "https://sourceforge.net/projects/msys2/files/Base/x86_64/msys2-base-x86_64-20200602.tar.xz/download"
    )
    set(ARCHIVE "msys2-base-x86_64-20200602.tar.xz")
    set(HASH ea754c9ea9fc7ae7051c15f97f5ee95dc628bf12af3713f941991a6ab3169f4c23767d132fa6640338a449648998dc4013c6f094f7ce2fe44c61caf276caf8c6)
    set(STAMP "initialized-msys2_64.stamp")
  else()
    set(TOOLSUBPATH msys32)
    set(URLS
      "http://repo.msys2.org/distrib/i686/msys2-base-i686-20200517.tar.xz"
      "https://github.com/msys2/msys2-installer/releases/download/2020-05-17/msys2-base-i686-20200517.tar.xz"
    )
    set(ARCHIVE "msys2-base-i686-20200517.tar.xz")
    set(HASH 74786326c07c1cf2b11440cbd7caf947c2a32ebcc2b5bb362301d12327a2108182f57e98c217487db75bf6f0e3a4577291933e025b9b170e37848ec0b51a134c)
    set(STAMP "initialized-msys2_32.stamp")
  endif()

?

[strega-nil]

@voskrese the sourceforge mirrors are no longer updated, and x86 is no longer supported. I will add the github mirrors tho, thanks!

[JackBoosY]

But if the host is x86, how should we use msys?

[JackBoosY]

@emptyVoid Ping for review this PR.

[ras0219-msft]

From https://www.msys2.org/:

MSYS2 requires Windows 7 (64 bit) or newer

Unfortunately, this means that anything requiring msys2 simply can't be used on x86 hosts because it is not supported on those platforms. We should investigate minimizing the number of default features that result in msys2 being invoked.

[emptyVoid]

and x86 is no longer supported

Well, afaiu MSYS2 team have just dropped building x86 installer. MinGW packages are still being updated for both platforms. And vcpkg doesn't really use the x86_64-only MSYS tools and packages.

I'm not sure if this is a good move to forsake all the vcpkg users who are stuck with x86 build servers, though of course I got no idea how many of them are out there.

[cenit]

what about #12467 instead?

[strega-nil]

Fixed by #12467 instead