[Bug bootstrap/87858] Building old multilib bootstrap GCC: stage1 32-bit libstdc++ fails to build after building 64-bit libstdc++
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87858 Libor Bukata changed: What|Removed |Added CC||libor.bukata at oracle dot com --- Comment #4 from Libor Bukata --- We also cannot build older GCC versions with GCC 11 nightly (commit 8a6a62614a8ae) on Solaris Trunk: /builds/gcc_nightly_full_build/components/gcc10/build/amd64/./gcc/xgcc -shared-libgcc -B/builds/gcc_nightly_full_build/components/gcc10/build/amd64/./gcc -nostdinc++ -L/builds/gcc_nightly_full_build/components/gcc10/build/amd64/x86_64-pc-solaris2.11/32/libstdc++-v3/src -L/builds/gcc_nightly_full_build/components/gcc10/build/amd64/x86_64-pc-solaris2.11/32/libstdc++-v3/src/.libs -L/builds/gcc_nightly_full_build/components/gcc10/build/amd64/x86_64-pc-solaris2.11/32/libstdc++-v3/libsupc++/.libs -B/usr/gcc/10/x86_64-pc-solaris2.11/bin/ -B/usr/gcc/10/x86_64-pc-solaris2.11/lib/ -isystem /usr/gcc/10/x86_64-pc-solaris2.11/include -isystem /usr/gcc/10/x86_64-pc-solaris2.11/sys-include -fno-checking -m32 -x c++-header -nostdinc++ -g -O2 -m32 -I/builds/gcc_nightly_full_build/components/gcc10/build/amd64/x86_64-pc-solaris2.11/32/libstdc++-v3/include/x86_64-pc-solaris2.11 -I/builds/gcc_nightly_full_build/components/gcc10/build/amd64/x86_64-pc-solaris2.11/32/libstdc++-v3/include -I/builds/gcc_nightly_full_build/components/gcc10/gcc-10.2.0/libstdc++-v3/libsupc++ -O2 -g -std=gnu++0x /builds/gcc_nightly_full_build/components/gcc10/gcc-10.2.0/libstdc++-v3/include/precompiled/stdc++.h \ -o x86_64-pc-solaris2.11/bits/stdc++.h.gch/O2ggnu++0x.gch ld.so.1: cc1plus: fatal: libstdc++.so.6: version 'GLIBCXX_3.4.29' not found (required by file /builds/gcc_nightly_full_build/components/gcc10/build/amd64/gcc/cc1plus) ld.so.1: cc1plus: fatal: /builds/gcc_nightly_full_build/components/gcc10/build/amd64/gcc/cc1plus: mismatched ELF symbol versioning xgcc: fatal error: Killed signal terminated program cc1plus GLIBCXX_3.4.29 is a new addition to libstdc++.so.6 that is not available in older libstdc++.so.6 libraries of GCC 7, 9, and 10.
[Bug libstdc++/66146] call_once not C++11-compliant on ppc64le
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66146 Libor Bukata changed: What|Removed |Added CC||libor.bukata at oracle dot com --- Comment #38 from Libor Bukata --- (In reply to Jonathan Wakely from comment #34) > Untested sketch of a solution for Solaris and BSDs: > https://gcc.gnu.org/pipermail/gcc-patches/2020-November/557928.html Thank you for the patch, I will test it on Solaris and let you know when I have the results.
[Bug libstdc++/66146] call_once not C++11-compliant on ppc64le
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66146
--- Comment #39 from Libor Bukata ---
(In reply to Libor Bukata from comment #38)
> (In reply to Jonathan Wakely from comment #34)
> > Untested sketch of a solution for Solaris and BSDs:
> > https://gcc.gnu.org/pipermail/gcc-patches/2020-November/557928.html
>
> Thank you for the patch, I will test it on Solaris
> and let you know when I have the results.
Patched GCC master with Jonathan's patch, but unfortunately it is not
compilable on Solaris 11:
In file included from
/gcc_nightly/build/sparcv9/sparcv9-sun-solaris2.11/libstdc++-v3/include/sparcv9-sun-solaris2.11/bits/c++config.h:568,
from
/gcc_nightly/build/sparcv9/sparcv9-sun-solaris2.11/libstdc++-v3/include/cassert:43,
from
/gcc_nightly/gcc-11.0.0-master/libstdc++-v3/include/precompiled/stdc++.h:33:
/gcc_nightly/build/sparcv9/sparcv9-sun-solaris2.11/libstdc++-v3/include/mutex:861:10:
error: token "{" is not valid in preprocessor expressions
861 | || _GLIBCXX_COMPAT_PTHREAD_ONCE_T
| ^~
In file included from
/gcc_nightly/build/sparcv9/sparcv9-sun-solaris2.11/libstdc++-v3/include/sparcv9-sun-solaris2.11/bits/c++config.h:568,
from
/gcc_nightly/build/sparcv9/sparcv9-sun-solaris2.11/libstdc++-v3/include/cassert:43,
from
/gcc_nightly/gcc-11.0.0-master/libstdc++-v3/include/precompiled/stdc++.h:33:
/gcc_nightly/build/sparcv9/sparcv9-sun-solaris2.11/libstdc++-v3/include/mutex:861:10:
error: token "{" is not valid in preprocessor expressions
861 | || _GLIBCXX_COMPAT_PTHREAD_ONCE_T
| ^~
In file included from
/gcc_nightly/build/sparcv9/sparcv9-sun-solaris2.11/libstdc++-v3/include/future:38,
from
/gcc_nightly/gcc-11.0.0-master/libstdc++-v3/include/precompiled/stdc++.h:105:
/gcc_nightly/build/sparcv9/sparcv9-sun-solaris2.11/libstdc++-v3/include/mutex:675:15:
error: explicitly defaulted function 'constexpr std::once_flag::once_flag()'
cannot be declared 'constexpr' because the implicit declaration is not
'constexpr':
675 | constexpr once_flag() noexcept = default;
| ^
/gcc_nightly/build/sparcv9/sparcv9-sun-solaris2.11/libstdc++-v3/include/mutex:699:12:
note: defaulted constructor calls non-'constexpr'
'std::once_flag::_Once::_Once()'
699 | struct _Once _GLIBCXX_COMPAT_PTHREAD_ONCE_T;
Note that there was a merge conflict with the current master, however, its
resolution was straightforward. If there is an updated patch, I will be happy
to test it as well.
