On Tue, Aug 26, 2008 at 08:14, Ian jonhson <jonhson.ian at gmail.com> wrote: > error: Failed build dependencies: > unifdef is needed by kernel-2.6.18-92.1.10.el5.x86_64 Yum is your friend. $ yum whatprovides unifdef ... unifdef.x86_64 : Unifdef tool for removing ifdef'd lines