Hi
I have installed Cadence EDA tools (IC5141) on Slackware 12.1. To start Cadence we use icfb.exe. When I run this I get the follwoing error.
bash-3.1#icfb &
bash-3.1# /home/Cadence/tools/dfII/bin/icfb.exe: relocation error: /home/Cadence/tools/dfII/bin/icfb.exe: symbol errno, version GLIBC_2.0 not defined in file libc.so.6 with link time reference.

How to solve this problem?. I am a newbie to linux and slackware. I would be glad if anybody could post their comments or solution.

Thanks in advance

Hi,

Could you post the output of "/lib/libc.so.6" ?

Hi
Thanks for your reply. I did ldd -r /lib/libc.so.6 here is output I got.
bash-3.1# ldd -r /lib/libc.so.6
/lib/ld-linux.so.2 (0xb7eff000)
linux-gate.so.1 => (oxffffe000)
Is this what you wanted to look at. libc.so.6 looks like some binary file. When I observe less /lib/libc.so.6 I observe the binary content. Please advice.

If you have the source code, try to change lines 'extern int errno;' to '#include <errno.h>' and recompile. Or else, ask the vendor to do that for you.

/lib/libc.so.6 is actually a library that can be run like a normal program, so you can run it like: I am not familiar with newer versions of Slackware, I only run it on an old laptop that cannot handle anything more recent.

Unfortunately, it seems that that you are stuck with a NPTL/TLS-only glibc. If you run "readelf -s /lib/libc.so.6 | grep errno@@" you can see the developers made it a private symbol (eg @@GLIBC_PRIVATE instead of @@GLIBC_2.0) because declaring errno is not thread-safe and TLS glibc uses threading internally.

You need to use a LinuxThreads glibc to run this application. Any distribution using glibc 2.3 and below are almost guaranteed to have LinuxThreads compiled in. Your choices are:

Install an older Linux distribution and use LD_ASSUME_KERNEL=2.4.1 to force LinuxThreads.

Setup a chroot on your existing Slackware system with an older release of a distribution.

Or create a directory with the necessary old libraries and use LD_LIBRARY_PATH to force the linker to load those libraries preferentially.

I don't know where you installed the program but something like (replace /dir/where_installed) :

should find all the required libraries that you need in order to run the program.

If you just try to replace glibc, other libraries will complain about GLIBC_2.7 and GLIBC_2.4, so you need every library to be contemporary.

It's pretty much completely unsupported to run a LinuxThreads executable under a modern kernel and Very Bad Weirdness might happen. Install an old version and actually boot into that install (or use Qemu and such).

Thanks alot guyz for your suggestions. Let me work on this and post you updates. Meanwhile I talked with the vendor and he suggests me to use RHEL3 or RHEL4. I am loving slackware so let me take pain to install in slackware. At the end of the day I am learning something interesting.Thanks once again for your advice.

I have successfully installed the tools in slackware 9.0 and it works well and did not have any problems at all while installing...No GLIBC_2.0 errors or such.
Thanks for your help.

So what was the solution?

kind of disappointed it was not posted

I thought that was obvious: "I have successfully installed the tools in slackware 9.0" which is an older release of Slackware, shipping an older glibc which was compatible with the binary.

Eric

You probably can use that with up to slackware-11.0 -the last version with glibc-2.3 and linux threads.