[MacPorts] #57356: libgcc8 @8.2.0.1 fails to build on Mojave with "C compiler cannot create executables"

[MacPorts]

#57356: libgcc8 @8.2.0.1 fails to build on Mojave with "C compiler cannot create
executables"
----------------------+--------------------
  Reporter:  p-vitt   |      Owner:  (none)
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:  2.5.4
Resolution:           |   Keywords:  mojave
      Port:  libgcc8  |
----------------------+--------------------
Description changed by ryandesign:

Old description:

> I just updated my OS to 10.14 Mojave and followed the Migration process
> described in the wiki. Three Mac Minis succeeded, but the first MacBook
> somehow failed:
>

> {{{
> Error: Failed to build libgcc8: command execution failed
> Error: See
> /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc8/libgcc8/main.log
> for details.
> }}}
>
> In main.log it says:
>
> {{{
> :info:build checking for C compiler default output file name...-
> :info:build configure: error: in
> `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc8/libgcc8/work/build/x86_64
> -apple-darwin18/libgomp':
> :info:build configure: error: C compiler cannot create executables
> :info:build See `config.log' for more details.
> :info:build make[2]: *** [configure-stage1-target-libgomp] Error 77
> }}}
>
> In libgomp's config.log, it says {{{error: unrecognized command line
> option '-V'}}} or {{{error: unrecognized command line option '-qversion';
> did you mean '--version'}}} or {{{error: C compiler cannot create
> executables}}}.
>
> I reinstalled XCode, accepted the license, checked the Command Line
> Tools, everything is fine. I also tried a binary install, without
> success. {{{port install -b libgcc8}}} fails with 404 on all probed
> sources.
>
> Then I tried to install gcc7, but this also depends on libgcc8.
> [https://trac.macports.org/ticket/57198 Uninstalling libunwind] doesn't
> help. I also had a look at some [https://trac.macports.org/ticket/33041
> older] [https://trac.macports.org/ticket/41217 tickets], without success.
>
> Right now, I have no clue how to proceed. Any help appreciated.
>
> P.S. the mail.log is too big to attach. Is this file also helpful? Then
> I'll try to strip some lines off the middle.

New description:

 I just updated my OS to 10.14 Mojave and followed the Migration process
 described in the wiki. Three Mac Minis succeeded, but the first MacBook
 somehow failed:


 {{{
 Error: Failed to build libgcc8: command execution failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc8/libgcc8/main.log
 for details.
 }}}

 In main.log it says:

 {{{
 :info:build checking for C compiler default output file name...-
 :info:build configure: error: in
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc8/libgcc8/work/build/x86_64
 -apple-darwin18/libgomp':
 :info:build configure: error: C compiler cannot create executables
 :info:build See `config.log' for more details.
 :info:build make[2]: *** [configure-stage1-target-libgomp] Error 77
 }}}

 In libgomp's config.log, it says {{{error: unrecognized command line
 option '-V'}}} or {{{error: unrecognized command line option '-qversion';
 did you mean '--version'}}} or {{{error: C compiler cannot create
 executables}}}.

 I reinstalled XCode, accepted the license, checked the Command Line Tools,
 everything is fine. I also tried a binary install, without success.
 {{{port install -b libgcc8}}} fails with 404 on all probed sources.

 Then I tried to install gcc7, but this also depends on libgcc8.
 [ticket:57198 Uninstalling libunwind] doesn't help. I also had a look at
 some [ticket:33041 older] [ticket:41217 tickets], without success.

 Right now, I have no clue how to proceed. Any help appreciated.

 P.S. the mail.log is too big to attach. Is this file also helpful? Then
 I'll try to strip some lines off the middle.

--

-- 
Ticket URL: <https://trac.macports.org/ticket/57356#comment:7>
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