Do you use %buildroot macro in your ~/.rpmmacros or wherever else to
override the default %{_tmppath}/glibc-2.3.4-root
?
If so, you need to make sure that the string length of your buildroot
is shorter or equal to /usr/src/debug.
This is not specific to glibc, almost all other packages need that too.
You can grep the rpmbuild -ba build log for
install_root=
if you are unsure.
Strange, I've never come across a problem with that, and I generally use the much-longer version recommended at:
http://www.fedora.us/wiki/PackagingHints
i.e.:
%{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)Paul.
