OS X 12.6 "chained fixups" warning

[jhpalmieri]

The upgrade to OS X 12.6 leads to a number of failing doctests because of a warning

ld: warning: -undefined dynamic_lookup may not work with chained fixups

Let's ignore this warning when parsing doctest output.

Component: doctest framework

Author: John Palmieri

Branch: 67c914c

Reviewer: Volker Braun

Issue created by migration from https://trac.sagemath.org/ticket/34533

[jhpalmieri]

comment:1

It would also be nice to know where this is coming from and deal with it at its root.

[jhpalmieri]

Branch: u/jhpalmieri/chained_fixups

[jhpalmieri]

New commits:

67c914c

trac 34533: silence warning during doctesting about "chained fixups"

[jhpalmieri]

Commit: 67c914c

[jhpalmieri]

comment:4

I'm making this a blocker since we currently have failing doctests on a supported platform.

[mkoeppe]

comment:5

I don't know if this really needs to be a blocker

[jhpalmieri]

comment:6

I'm not sure, either, but it would be best to have a release that passes doctests on all supported platforms.

[vbraun]

Reviewer: Volker Braun

[vbraun]

comment:8

Seems safe enough, and its unlikely to accidentally hide a real error

[jhpalmieri]

comment:9

Thank you (and as I said earlier, it would be nice to understand why this has begun happening and deal with it rather than hide it).

[kwankyu]

comment:10

For your info:

• -undefined dynamic_lookup is a usual flag (in macos) given to the dynamic linker (dyld) to "dynamically lookup undefined symbols".

• The only webpage I found that explains "chained fixups" is: https://www.emergetools.com/blog/posts/iOS15LaunchTime

Still I don't understand the warning message and "why this has begun happening" :)

[vbraun]

Changed branch from u/jhpalmieri/chained_fixups to 67c914c

[jhpalmieri]

comment:13

Follow-up in #34577.

[jhpalmieri]

Changed commit from 67c914c to none