Re: [gentoo-alt] OS X Yosemite XCode 7.0 bootstrap fails on stage3 perl

[Konstantin Tokarev]

09.10.2015, 21:46, "Gibson, John" <jgibson@×××××.org>:
> Hi fellow Alters,
>
> I just went through bootstrapping again on OS X after installing XCode 7.0 command line tools. Stage 3 Perl died with a linker error, after some tweaking of the makefile to get verbose errors out of clang's linker I got roughly this:
>
> clang version 3.5.2 (tags/RELEASE_352/final)
> Target: x86_64-apple-darwin14.5.0
> Thread model: posix
> š"/Library/Gentoo/usr/bin/ld" -demangle -dynamic -dylib -dylib_compatibility_version 5.22.0 -dylib_current_version 5.22.0 -arch x86_64 -dylib_install_name /Library/Gentoo/usr/lib/perl5/5.22.0/x86_64-darwin/CORE/libperl.5.22.dylib -macosx_version_min 10.5.0 -o libperl.5.22.0.dylib -ldylib1.10.5.o -dead_strip_dylibs op.o perl.o gv.o toke.o perly.o pad.o regcomp.o dump.o util.o mg.o reentr.o mro_core.o keywords.o hv.o av.o run.o pp_hot.o sv.o pp.o scope.o pp_ctl.o pp_sys.o doop.o doio.o regexec.o utf8.o taint.o deb.o universal.o globals.o perlio.o perlapi.o numeric.o mathoms.o locale.o pp_pack.o pp_sort.o caretx.o DynaLoader.o -lpthread -ldl -lm -lutil -lc -lSystem -lgcc_s.10.5 /Library/Gentoo/usr/bin/../lib/clang/3.5.2/lib/darwin/libclang_rt.osx.a
> ld: library not found for -lgcc_s.10.5
> x86_64-apple-darwin14-clang-3.5.2: error: linker command failed with exit code 1 (use -v to see invocation)
> GNUmakefile:354: recipe for target 'libperl.5.22.0.dylib' failed
> make: *** [libperl.5.22.0.dylib] Error 1
>
> AFAICT Apple has started dropping support for older releases, and the default build for perl tries to target 10.3. With some experiments I determined that 10.6 is the lowest version number that I could use to build perl successfully. I hacked up the ebuild to apply this patch:
> diff -wur perl-5.22.0.orig/hints/darwin.sh perl-5.22.0/hints/darwin.sh
> --- perl-5.22.0.orig/hints/darwin.sh 2015-10-09 12:55:55.000000000 -0400
> +++ perl-5.22.0/hints/darwin.sh 2015-10-09 13:39:44.000000000 -0400
> @@ -206,7 +206,7 @@
> ššššlddlflags="${ldflags} -bundle -undefined dynamic_lookup"
> ššššcase "$ld" in
> šššššššš*MACOSX_DEVELOPMENT_TARGET*) ;;
> - *) ld="env MACOSX_DEPLOYMENT_TARGET=10.3 ${ld}" ;;
> + *) ld="env MACOSX_DEPLOYMENT_TARGET=10.6 ${ld}" ;;
> ššššesac
> šššš;;
> šesac
>
> Which works, but would obviously break stuff for anyone still targeting 10.5 or earlier (do we still have PPC Prefixed Portage users?).

Yes.
I think it would be better to use current OS X version of host instead of hardcoding 10.3 or 10.6

> This thread on the Perl mailing list sounds like someone upstream wants to keep targeting old versions of OS X:
> http://www.gossamer-threads.com/lists/perl/porters/317985
> Also, it looks like the Perl ebuild doesn't use the standard patching mechanism. I have no idea how the eblit stuff works, so I'm not sure what the right way is to add new patches to the Perl ebuild.
>
> John

-- 
Regards,
Konstantin