Windows support

[samwgoldman]

Currently, re2 does not build on Windows for a few reasons. I'm opening this issue to gauge interest from the JS team and as a tracking issue for future PRs.

Known issues:

• re2_c build rule
  • overrides CXX, but we want x86_64-w64-mingw32-g++.exe from the env
  • bash script %{make} interpolation doesn't work with Windows-style path separators, which become escape sequences in the string
• upstream re2 code doesn't compile, needs to be updated (suggest updating to tag 2019-06-01)

[dwang20151005]

Hi,

I'm opening this issue to gauge interest from the JS team and as a tracking issue for future PRs.

We're happy to take PRs!

For Windows and BSD, our policy is to merge patches but not to promise any support ourselves or to exercise it as part of our CI suite. Our internal CI has no Windows build boxes. Nor do I have a Windows dev box.

[rzabarazesh]

@dwang20151005 We have been able to add mingw support to v0.15.0 prior to the core split. It would be great if we can upstream those changes here as well but in the meantime I figured I can drop a link in case anyone else found it useful:
https://github.com/rzabarazesh/re2/tree/v0.15-mingw

[dwang20151005]

Can you send me a pull request? That will trigger some tooling we have that makes it easier for me to import your changes.