On 12/4/21 9:37 AM, Peter Bergner wrote:
> On 12/4/21 9:25 AM, Michael Meissner wrote:
> 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)
To go into a little more in depth, the important thing is your a.out
was linked with the correct loader:
ubuntu@gcc-fortran:/home/tkoenig/Tst$ readelf -l a.out | grep interpreter
[Requesting program interpreter: /opt/at15.0/lib64/ld64.so.2]
...and the error message you saw was a good thing, it showed your a.out was
expecting to see the newer GLIBC 2.34 and didn't. The reason it didn't
was that the system ldd which you used does some magic and overrides the
a.out runtime loader with the system loader and that loader uses its
own ld.so.cache which doesn't include AT15's library paths. The AT15
loader has its own /opt/at15.0/etc/ld.so.cache which includes its lib dirs
as well the system lib dirs. This way, the AT15 libs are found first and
any library AT15 doesn't provide it automatically picked up from the system.
As long as you keep the AT15 bin path before the system bin dirs, you should
be fine.
Peter
