Use opensuse toolchain to build windows binaries for WinRPM package compatibility

[SimonDanisch]

Compilation on windows+cygwin hangs at inference for an infinite amount of time (so far it hasn't stopped)
Maybe connected to a9915ff ?

Compiler log: https://gist.github.com/SimonDanisch/df154b87b932f3b865db#file-compilationlog

Best,
Simon

[KristofferC]

See #10331 (comment) and #11678

[tkelman]

pull and try again

[SimonDanisch]

hmm... "julia.exe stopped working" when i start the binary dist. make cleanall && make && make win-extras && make binary-dist and then installed it without and with copying julia/usr/lib/julia

[SimonDanisch]

Interesting, from inside cygwin make test seems to work.
I wonder if I'm doing anything wrong while installing it. But I would not know what. I removed the old installation and installed the new one, like always. There is not that much to do wrong here, right?

[tkelman]

Had you done make win-extras a while ago and are you re-using the same build? You might need to update the win-extras files via rm -rf dist-extras && make win-extras

[SimonDanisch]

this does not seem to fix the issue :(

[tkelman]

I think this is at the root of the issues on appveyor right now, there was a change in upstream opensuse that may have broken our binaries.

[tkelman]

While I'm testing things out, if someone on Windows wants to just try downloading the latest nightly https://status.julialang.org/download/win64 and see whether it works properly, let me know. I think it might be broken but am busy working on fixing appveyor right now.

[SimonDanisch]

jupp its broken!

[tkelman]

Thanks. I think the short-term "rescue appveyor" fix is to stop pulling in the gcc dll's from opensuse in the nightly binaries, I'll do that shortly. This may however break IJulia due to zmq depending on libstdc++.

[tkelman]

Keep an eye on http://buildbot.e.ip.saba.us:8010/builders/package_win8.1-x64/builds/841, and when it's finished I hope we'll have things working again. But any C++ WinRPM packages like zmq, cbc, etc may be broken for a little while.

If anyone wants to help fix this permanently, we'll need to adapt contrib/windows/winrpm.sh to preserve paths from the extracted cpio download, and try to get a build working using the winrpm-downloaded mingw-w64 gcc, g++, and gfortran.

[tkelman]

The nightly and appveyor are fixed now. If someone wants to try installing the latest nightly and checking if, from a clean package directory, packages like zmq and cbc can work correctly, would be good to know. I'm working on trying to get the mingw-w64 toolchain from opensuse to work. MSYS2 might be easier to bring back support for than cygwin, will see.

[tkelman]

Closing in favor of #11705, please help review, test, and suggest additions to that.