Unable to build libgcc45-4.5.4_15 on MacOS 10.12 with Xcode 9.2

[Xof (Christophe Pettus)]

Final lines below; build log attached.

port clean done before build.

MacOS 10.12.6; XCode 9.2.

:info:build make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc45/libgcc45/work/build'
:info:build make: *** [bootstrap-lean] Error 2
:info:build make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc45/libgcc45/work/build'
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc45/libgcc45/work/build" && /usr/bin/make -j8 -w bootstrap-lean 
:info:build Exit code: 2
:error:build Failed to build libgcc45: command execution failed
:debug:build Error code: CHILDSTATUS 11406 2
:debug:build Backtrace: command execution failed
:debug:build     while executing
:debug:build "system {*}$notty {*}$nice $fullcmdstring"
:debug:build     invoked from within
:debug:build "command_exec build"
:debug:build     (procedure "portbuild::build_main" line 8)
:debug:build     invoked from within
:debug:build "$procedure $targetname"
:error:build See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_gcc45/libgcc45/main.log for details.

[Xof (Christophe Pettus)]

build log

[kencu (Ken)]

looks like it builds on 10.5 to 10.11 <​http://packages.macports.org/libgcc45/?C=N;O=A> but not newer systems.

This is a known issue with gcc version less than 5 -- see 56511. It is probably fixable, but nobody has bothered to fix it because so far it hasn't been that needed.

Can you use gcc5+ instead? Fixing this is probably a bit of a PITA.

[jmroot (Joshua Root)]

You're sure this is the same issue? As I noted in the other ticket, gcc45 built OK on 10.12 (as did all gcc versions other than 4.9).

[jmroot (Joshua Root)]

The error here (AFAICT) seems to be:

:info:build checking for ISO C99 support in <complex.h>... <stdin>:96:16: error: non-local symbol required in directive
:info:build .no_dead_strip L_OBJC_SYMBOLS
:info:build                ^

This is different to the error in the other ticket.

[ryandesign (Ryan Carsten Schmidt)]

I'm not sure it's the same issue. I don't have a Sierra system easily to hand at the moment to test it.

Our Sierra buildbot worker succeeded in building gcc45 and libgcc45 back on June 6 and we have those binaries on our packages server, but libgcc45 was updated in August and that rebuild did not succeed on Sierra. I'm triggering a rebuild to see what the problem is there:

​https://build.macports.org/builders/ports-10.12_x86_64-builder/builds/66746

[jmroot (Joshua Root)]

So actually this is a dupe, but of #56996.