I was under the impression that "architectures": ["x86_64"] in https://bugs.webkit.org/show_bug.cgi?id=139908 would have made it build 64-bit binaries, but it does not. The WinCairo bot should build 64-bit binaries. Brent, how is this done?
Seems like WinCairoRequirements.zip does not include 32-bit libraries anymore. I'm building 64-bit binaries by running "vcvarsall.bat amd64" Is the 32-bit build not supported anymore?
The WinCairo bot is building 64-bit binaries right now. 32-bit can still be done, but I didn't want to include the libraries in the zip to keep the size down. See https://github.com/peavo/WinCairoRequirements