I just reproduced this bug on the ppc64el buildd. This is exact some error:
/usr/bin/ld: cannot find -lz http://deb1.ltc.br.ibm.com/wanna-buildd-upstream/logs/pynac_0.2.6-1_ppc64el-20140510-0908.build -- debian-science-maintainers mailing list debian-science-maintainers@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/debian-science-maintainers
