In a few files that are part of gnulib, they check for _IO_ferror_unlocked. When trying to build any package that uses gnulib (findutils, coreutils, m4, many others...) make fails on fpurge.c and others that are checking for _IO_ferror_unlocked. If I add ' || defined __HAIKU__' it will then build. Question for the list is whether Haiku should be setting this somewhere? Here's the HaikuPorts ticket on this one: http://ports.haiku-files.org/ticket/70 Checking findutils in the Haiku tree, seems fpurge.c and the others aren't even being used? -scottmc