Re: heads-up for macOS users re new ld(1) implementation

[Jason Bacon <jtocino%gmx.com@localhost>]

On 9/29/23 21:18, Tobias Nygren wrote:
> Hi,
>
> With the latest macOS 14 Xcode update comes a Command Line Tools update.
> This brings a new implementation of ld(1) which unfortunately
> has bugs that break some packages (ffmpeg5, gcc, ...)
>
> If you have installed this update and encounter strange linker breakage,
> sometimes it helps to locally put this line into the package's Makefile:
>
> LDFLAGS.Darwin+=	-Wl,-ld_classic
>
> Please don't commit such fixes yet though since it might break
> packages for old CLT versions. People have reported bugs to Apple,
> hopefully they will release a bugfix update soon.
>
> Kind regards,
> -Tobias

This doesn't help gcc12, but I'm not sure the LDFLAGS addition is
getting through to libtool, based on this terminal output:

libtool: link:
/Users/bacon/Pkgsrc/pkgsrc/lang/gcc12/work/build/./gcc/xgcc
-shared-libgcc -B/Users/bacon/Pkgsrc/pkgsrc/lang/gcc12/work/build/./gcc
-nostdinc++
-L/Users/bacon/Pkgsrc/pkgsrc/lang/gcc12/work/build/aarch64-apple-darwin23/libstdc++-v3/src
-L/Users/bacon/Pkgsrc/pkgsrc/lang/gcc12/work/build/aarch64-apple-darwin23/libstdc++-v3/src/.libs
-L/Users/bacon/Pkgsrc/pkgsrc/lang/gcc12/work/build/aarch64-apple-darwin23/libstdc++-v3/libsupc++/.libs
-B/Users/bacon/Pkgsrc/pkg/gcc12/aarch64-apple-darwin23/bin/
-B/Users/bacon/Pkgsrc/pkg/gcc12/aarch64-apple-darwin23/lib/ -isystem
/Users/bacon/Pkgsrc/pkg/gcc12/aarch64-apple-darwin23/include -isystem
/Users/bacon/Pkgsrc/pkg/gcc12/aarch64-apple-darwin23/sys-include
-dynamiclib  -o .libs/libstdc++.6.dylib .libs/libstdc++.6.dylib-master.o

-L/Users/bacon/Pkgsrc/pkgsrc/lang/gcc12/work/build/aarch64-apple-darwin23/libstdc++-v3/libsupc++/.libs
-L/Users/bacon/Pkgsrc/pkgsrc/lang/gcc12/work/build/aarch64-apple-darwin23/libstdc++-v3/src
-L/Users/bacon/Pkgsrc/pkgsrc/lang/gcc12/work/build/aarch64-apple-darwin23/libstdc++-v3/src/.libs
-L/Users/bacon/Pkgsrc/pkg/lib /Users/bacon/Pkgsrc/pkg/lib/libiconv.dylib
-lm  -Wl,-exported_symbols_list -Wl,libstdc++-symbols.explist
-install_name  /Users/bacon/Pkgsrc/pkg/gcc12/lib/libstdc++.6.dylib
-compatibility_version 7 -current_version 7.30
-macosx_version_min has been renamed to -macos_version_min
ld: warning: ignoring duplicate libraries: '-lgcc'
ld: warning: search path '/Users/bacon/Pkgsrc/pkg/gcc12//lib/.' not found
ld: warning: search path '/Users/bacon/Pkgsrc/pkg/gcc12/lib/.' not found
0  0x104f0b648  __assert_rtn + 72
1  0x104e3ffac  ld::AtomPlacement::findAtom(unsigned char, unsigned long
long, ld::AtomPlacement::AtomLoc const*&, long long&) const + 1204
2  0x104e55924
ld::InputFiles::SliceParser::parseObjectFile(mach_o::Header const*)
const + 15164
3  0x104e62e30  ld::InputFiles::parseAllFiles(void (ld::AtomFile const*)
block_pointer)::$_7::operator()(unsigned long, ld::FileInfo const&)
const + 420
4  0x18043d950  _dispatch_client_callout2 + 20
5  0x1804521a4  _dispatch_apply_invoke_and_wait + 176
6  0x180451464  _dispatch_apply_with_attr_f + 1176
7  0x180451650  dispatch_apply + 96
8  0x104edd3b8  ld::AtomFileConsolidator::parseFiles(bool) + 292
9  0x104e7e170  main + 9048
ld: Assertion failed: (resultIndex < sectData.atoms.size()), function
findAtom, file Relocations.cpp, line 1336.
collect2: error: ld returned 1 exit status
gmake[5]: *** [Makefile:751: libstdc++.la] Error 1
gmake[5]: Leaving directory
'/Users/bacon/Pkgsrc/pkgsrc/lang/gcc12/work/build/aarch64-apple-darwin23/libstdc++-v3/src'
gmake[4]: *** [Makefile:784: all-recursive] Error 1
gmake[4]: Leaving directory
'/Users/bacon/Pkgsrc/pkgsrc/lang/gcc12/work/build/aarch64-apple-darwin23/libstdc++-v3/src'
gmake[3]: *** [Makefile:576: all-recursive] Error 1
gmake[3]: Leaving directory
'/Users/bacon/Pkgsrc/pkgsrc/lang/gcc12/work/build/aarch64-apple-darwin23/libstdc++-v3'
gmake[2]: *** [Makefile:501: all] Error 2
gmake[2]: Leaving directory
'/Users/bacon/Pkgsrc/pkgsrc/lang/gcc12/work/build/aarch64-apple-darwin23/libstdc++-v3'
gmake[1]: *** [Makefile:13597: all-target-libstdc++-v3] Error 2