glibc-2.3.3-18.src.rpm build fails on multiprocessor platforms. I used a s390 with 5 CPUs and the spec file started a make -j 5 This fails. chmod -x /usr/bin/getconf disables the use of the -j option and then the glibc package builds without problems. Ask for a build log if you need one.
Well, it built just fine for me on all arches (on s390 and s390x this was with 8 CPUs each particularly).
Created attachment 98849 [details] buildlog glibc.failed
Works for me all the time. We won't chase somebody else's build problems. If you actually find something wrong, which I doubt, report it upstream.