libnspr-dev 2:1.7.12-0ubuntu04.10 (i386 binary) in ubuntu warty

Netscape Portable Runtime library - development files
 NSPR provides platform independence for non-GUI operating system
  facilities including:
   * threads,
   * thread synchronisation,
   * normal file I/O and network I/O,
   * interval timing and calendar time,
   * basic memory management (malloc and free),
   * shared library linking.
  .
  See http://www.mozilla.org/docs/refList/refNSPR/ for more information.
  .
  You need this package to get includes and static libraries for building
  programs linked to NSPR.