emacs @28.2_1: "-undefined dynamic_lookup may not work with chained fixups"

[vallon (Justin)]

Running emacs shows the following in the *Warnings* buffer:

Warning (comp): ld: warning: -undefined dynamic_lookup may not work with chained fixups Disable showing Disable logging

Emacs bug: ​https://debbugs.gnu.org/57849

Commit that fixes: ​https://github.com/emacs-mirror/emacs/commit/97b928ce09d6034ebcb541fb548e5d4862302add

That commit is after emacs-28.2, and 28.3 has not been tagged yet.

Workaround is to set native-comp-driver-options. Something like the following in init.el:

;;; emacs 28.2 fix
(setq native-comp-driver-options (when (eq system-type 'darwin) '("-Wl,-w")))

[neverpanic (Clemens Lang)]

​https://github.com/python/cpython/issues/97524#issuecomment-1442449271 suggests that a newer Xcode version will eventually fix this, too.

On older Xcode versions, -Wl,-no_fixup_chains should be passed instead of silencing the warning.

[ryandesign (Ryan Carsten Schmidt)]

The commit you mentioned was included in emacs 29.1 which is the version in MacPorts now so please retry with that version.

[vallon (Justin)]

Fixed in current macports emacs 29.2.