Red Hat Bugzilla – Bug 479133
zconf.h does not include unistd.h
Last modified: 2009-03-17 13:14:35 EDT
zconf.h contains "#if 0" on the HAVE_UNIST_H line.
With zlib's original build system, this line is modified by ./configure.
When Fedora switched to autotools, it forgot to handle this.
fixed in zlib-1.2.3-21