How to deal with this?

[Brad Lucier]

This is on alphaev6-unknown-linux-gnu with Red Hat 6.0 + 2.2.18 kernel +
2.9.5 binutils + make 3.79; I've read the info pages for make 3.79, 
and I think I understand what the problem is, but I can't find where to
fix it.

Brad

make[3]: Entering directory `/export/u11/lucier/programs/gcc/objdir/alphaev6-unknown-linux-gnu/zlib'
make[3]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.

This happens several times, e.g.:

make[3]: Entering directory `/export/u11/lucier/programs/gcc/objdir/alphaev6-unknown-linux-gnu/libiberty'
make[3]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.

and

make[3]: Entering directory `/export/u11/lucier/programs/gcc/objdir/alphaev6-unknown-linux-gnu/libf2c'
make[3]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.

Brad