In <8AC86F2E-5BB2-4793-9183-CF4CB8E2084F@gwdg.de>, Ansgar Esztermann wrote:
we're experiencing segfaults in binaries created on openSUSE 10.2 when run on 11.1 systems. These occur in getpwuid(), so I am wondering what the expected compatibilty between glibc versions is -- shouldn't the linker complain if the user tries to execute a binary that's too old?
Newer versions of glibc should run programs compiled against older versions of glibc as long as the SO_NAME (and maybe SO_VERSION?) hasn't changed. You may want to report this segfaults as bugs in 11.1.
When compiling on 11.1 and executing on 10.3, the linker gives an error: : lee$; /usr/local/gromacs/405/fftw312-gcc412/bin/pdb2gmx -f 1UBI.pdb
/usr/local/gromacs/405/fftw312-gcc412/bin/pdb2gmx: /lib64/libc.so.6: version `GLIBC_2.7' not found (required by /usr/local/gromacs/405/ fftw312-gcc412/bin/pdb2gmx)
The glibc package for 10.3 probably doesn't provide libc.so.6(GLIBC_2.7). In general compiling on a newer system and running on an older systems isn't supported. There's no good way to "fix up" an old version to match the new version, but you can "fix" a new version to match an old version.
A quick check seems to indicate that 11.0 will run binaries compiled on either 10.2 or 11.1, so we have some leeway. Is there any hope to compile a binary that will run on both 10.3 and 11.1?
You may have to install some compatibility libraries on the 11.1 system. I do not have a 10.3 system around to investigate. -- Boyd Stephen Smith Jr. ,= ,-_-. =. bss@iguanasuicide.net ((_/)o o(\_)) ICQ: 514984 YM/AIM: DaTwinkDaddy `-'(. .)`-' http://iguanasuicide.net/ \_/