OpenBLAS: as: I don't understand 'm' flag!

[shaonghosh (Shaon Ghosh)]

Hi,

The MacPorts upgrading is failing for OpenBLAS with the following error message:

:info:build FATAL:/opt/local/bin/../libexec/as/x86_64/as: I don't understand 'm' flag!

I raised this issue in the github page of OpenBlas: ​https://github.com/xianyi/OpenBLAS/issues/1716#issuecomment-410548962 They suggested me that this is a MacPorts issue with putting the PATH variable containing /opt/local/bin ahead of /usr/bin. I also verified elsewhere where they suggest the same reason. I tried usual things that MacPorts suggest, uninstalling the port and reinstalling etc, which did not work. I also tried to manually set the path and reinstall, that did not work either.

[ryandesign (Ryan Carsten Schmidt)]

It sounds like you have the cctools port (the one that provides as) installed with one of the +llvm variants (which used to be the default on all systems). You can verify whether that is so by looking at the output of:

port installed cctools

You didn't mention what version of Xcode or macOS you have, but if you're using Xcode 9 or later, please reinstall the cctools port with the +xcode variant instead, which is as of 12 days ago the new default when Xcode 9 or later is used (but unfortunately there isn't a mechanism in MacPorts that allows us to make that new default available to any users who had already installed the port before). To do that, run:

sudo port selfupdate
sudo port install cctools +xcode

[shaonghosh (Shaon Ghosh)]

Thank you very much. Reinstalling cctools with +xcode worked.

[michaelld (Michael Dickens)]

Thanks for the prompt feedback. Closing ticket as fixed.