undefined symbol: __stack_chk_fail_local
Andrew Haley
aph at redhat.com
Thu Oct 30 11:45:46 UTC 2008
Douglas Bagnall wrote:
> I've been working on a package for OLPC that uses pam_sotp, which
> Rahul Sundaram packaged for Fedora in order to help OLPC.
>
> http://sundaram.fedorapeople.org/packages/pam_sotp-0.3.3-1.fc9.src.rpm
>
> Unfortunately the installed pam module fails with errors like this:
>
> PAM unable to dlopen(/lib/security/pam_sotp.so): \
> /lib/security/pam_sotp.so: undefined symbol: __stack_chk_fail_local
>
> This is related to gcc's fairly recently introduced stack smashing
> protection; if it is compiled with CFLAGS="-fno-stack-protector", the
> module works fine. But that seems wrong.
That depends on whether the target system has runtime support for it.
> How are these symbols ending up undefined? Has anyone met this
> problem before? Some googling suggested linking with gcc rather than
> ld, but I can't work out how to make the rpm do that.
It seems to do that already.
> (This is all Fedora 9, gcc-4.3.0-8.i386).
This symbol hould be in /lib/libc.so.6. Isn't it?
Andrew.
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