Re: [MacPorts] #70866: gcc14 doesn’t build for x86_64 on macOS 15 (Xcode 16): “Undefined symbols for architecture x86_64” while linking libgcc_s.1.dylib

[MacPorts]

#70866: gcc14 doesn’t build for x86_64 on macOS 15 (Xcode 16): “Undefined symbols
for architecture x86_64” while linking libgcc_s.1.dylib
---------------------------+-----------------------------------
  Reporter:  markmentovai  |      Owner:  markmentovai
      Type:  defect        |     Status:  closed
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:  fixed         |   Keywords:  sonoma sequoia x86_64
      Port:  gcc14         |
---------------------------+-----------------------------------

Comment (by markmentovai):

 Replying to [comment:28 reneeotten]:
 > for me it still fails even after applying the patch you linked from your
 repository, but it's certainly possible that something else is going on.
 Just in case, I have attached my {{{main.log}}} if that's of any help to
 you.
 >
 > [edit: perhaps I didn't completely remove that changes to the Portfile I
 already attempted; trying one more time now...]

 That [https://trac.macports.org/attachment/ticket/70866/main.log.gz
 main.log] ends with:

 {{{
 :info:build checking for suffix of object files... configure: error: in
 `/opt/local/var/macports/build/_Users_renee_Software_macports-
 ports_lang_gcc14/libgcc14/work/build/x86_64-apple-darwin24/libgcc':
 :info:build configure: error: cannot compute suffix of object files:
 cannot compile
 :info:build See `config.log' for more details
 :info:build make[2]: *** [configure-stage1-target-libgcc] Error 1
 :info:build make[2]: Leaving directory `/opt/local/var/macports/build
 /_Users_renee_Software_macports-ports_lang_gcc14/libgcc14/work/build'
 :info:build make[1]: *** [stage1-bubble] Error 2
 :info:build make[1]: Leaving directory `/opt/local/var/macports/build
 /_Users_renee_Software_macports-ports_lang_gcc14/libgcc14/work/build'
 :info:build make: *** [bootstrap-lean] Error 2
 :info:build make: Leaving directory `/opt/local/var/macports/build
 /_Users_renee_Software_macports-ports_lang_gcc14/libgcc14/work/build'
 :info:build Command failed:  cd "/opt/local/var/macports/build
 /_Users_renee_Software_macports-ports_lang_gcc14/libgcc14/work/build" &&
 /usr/bin/make -j8 -w bootstrap-lean
 :info:build Exit code: 2
 :error:build Failed to build libgcc14: command execution failed
 :debug:build Error code: CHILDSTATUS 77585 2
 […]
 :error:build See /opt/local/var/macports/logs
 /_Users_renee_Software_macports-ports_lang_gcc14/libgcc14/main.log for
 details.
 }}}

 That’s the telltale of #70641. It indicates that the compiler driver that
 was just built does not have the `AS_NEEDS_DASH_FOR_PIPED_INPUT` fix.

 If it happens again with the same `configure: error: cannot compute suffix
 of object files: cannot compile`, the `config.log` at
 /opt/local/var/macports/build/_Users_renee_Software_macports-
 ports_lang_gcc14/libgcc14/work/build/x86_64-apple-
 darwin24/libgcc/config.log will also be valuable for troubleshooting.

 But at the very top of your log, I see:

 {{{
 :debug:main Starting logging for libgcc14 @14.2.0_1+stdlib_flag
 }}}

 [https://github.com/markmentovai/macports-
 ports/commit/727cc2bddbd39fbad964d0f2e6eaf3be164e23e7.patch The patch]
 sets `revision 2`, and the [https://github.com/macports/macports-
 ports/commit/40a267e1c3265b3215fdccc45c544637e75a7557 version that Chris
 committed] has a small change to put `revision 2` into effect on macOS ≥
 14. Since your log shows 14.2.0_1, you must not have the patch in effect.

 Since this has now been committed, you should be able to do a `port sync`
 and get 14.2.0_2 without any manual effort. If you’re still having
 trouble, make sure that you’ve got the correct Portfile. The SHA-256 hash
 should be:

 {{{
 mark at arm-and-hammer zsh% shasum -a256 lang/gcc14/Portfile
 6544f069e9718a8fd753f90a15340e24471485874ee0a410ddd3f1dc813be90d
 lang/gcc14/Portfile
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/70866#comment:31>
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