On 12/4/21 9:25 AM, Michael Meissner wrote: > On Sat, Dec 04, 2021 at 02:42:13PM +0100, Thomas Koenig wrote: > Note, the system ldd does not tend to accurately report the library > dependencies for AT libraries:
And using AT15's ldd, it shows your a.out is linked to the correct libc: ubuntu@gcc-fortran:/home/tkoenig/Tst$ ldd ./a.out ./a.out: /lib/powerpc64le-linux-gnu/libc.so.6: version `GLIBC_2.34' not found (required by ./a.out) linux-vdso64.so.1 (0x00007f6339620000) libc.so.6 => /lib/powerpc64le-linux-gnu/libc.so.6 (0x00007f63393d0000) /opt/at15.0/lib64/ld64.so.2 => /lib64/ld64.so.2 (0x00007f6339640000) ubuntu@gcc-fortran:/home/tkoenig/Tst$ /opt/at15.0/bin/ldd ./a.out linux-vdso64.so.1 (0x00007158fb1c0000) libc.so.6 => /opt/at15.0/lib64/power9/libc.so.6 (0x00007158faf40000) /opt/at15.0/lib64/ld64.so.2 (0x00007158fb1e0000) What I would do is place /opt/at15.0/bin as the 2nd directory in your PATH, with your new GCC install dir being first. That way, things should be seemless for you. Peter