Hello! I'm testing a Linux/Linux GCC10 cross-compiler (configured with a
sysroot + glibc 2.33) and hitting a linking issue. One of the OSS
packages I had built before with a simple bootstrapped GCC10 is looking
for this symbol:
undefined symbol: _ZSt15__once_callable, version GLIBCXX_3.4.11
This symbol does not exist in the new libstdc++, and yet I see it in the
old one:
$ nm /opt/gcc-10/lib64/libstdc++.so.6 | grep callable
0000000000000018 B _ZSt15__once_callable
Clearly the new build is not quite the same as the old one... but which
one is correct for Linux/x86-64? And what controls this variance? It
looks like glibc does not have a flag to control TLS any more...
I would appreciate any hints!
Thanks in advance,
Oleg.
