 the most common cause of trees failing to build under
distcc.  Alternatives to Make such as <I> SCons</I> can give much
faster builds for some projects.<BR>
<P>
Using different versions of gcc can cause confusing build problems
because the header files and binary interfaces have changed over
time, and some distributors have included incompatible patches
without changing the version number.  distcc does not protect
against using incompatible versions.  Compiler errors about link
problems or declarations in 