ay increase 3X or more for large
builds compared to plain distcc mode.<BR>
<H2>
<A NAME=TOC_9>
RESTRICTIONS FOR PUMP MODE</A>
</H2>
<BR>
Using pump mode requires both client and servers to use release
3.0 or later of distcc and distccd (respectively).<BR>
<P>
The incremental include analysis of distc-pump mode rests on the
fundamental assumption that source and header files do not change
during the build process.  A few complex build systems, such as
that for Linux kernel 2.6, do not quite satisfy this requ