+universal and static libraries

Joshua Root jmr at macports.org
Thu Feb 14 10:11:23 UTC 2019

On 2019-2-14 20:37 , René J.V. Bertin wrote:
> Hi,
> Is there a reliable way to build projects that use/produce static libraries with +universal but without the muniversal PG?
> I've been tinkering with an upgrade for port:mesa, the current version uses static libraries internally as intermediate build products, something I noticed only when I got message saying that "archive is built for architecture which is not the architecture being built for (XXX)". Funnily enough I did manage to get the thing to build once but haven't been able to reproduce that feat.

You can have static archives containing fat object files but some tools
can't handle such archives. You also absolutely must have a table of
contents in the archives for this to work (i.e. use the 's' option with
ar or run ranlib afterwards.)

- Josh

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