Building java library is slow

[Brad Lucier]

> gets disabled by make
> internally (in that case it gives a warning about that "warning: -jN
> forced in submake: disabling jobserver mode.").

You're absolutely right; we see in build.log

make[3]: Entering directory `/export/u3/lucier/programs/gcc/gcc-3.1/objdir-sparcv9/sparcv9-sun-solaris2.8/libiberty'
make[3]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.
...
make[5]: Entering directory `/export/u3/lucier/programs/gcc/gcc-3.1/objdir-sparcv9/sparcv9-sun-solaris2.8/libstdc++-v3'
make[5]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.
...
make[3]: Entering directory `/export/u3/lucier/programs/gcc/gcc-3.1/objdir-sparcv9/sparcv9-sun-solaris2.8/libf2c'
make[3]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.
...
make[3]: Entering directory `/export/u3/lucier/programs/gcc/gcc-3.1/objdir-sparcv9/sparcv9-sun-solaris2.8/libobjc'
make[3]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.
...
make[4]: Entering directory `/export/u3/lucier/programs/gcc/gcc-3.1/objdir-sparcv9/sparcv9-sun-solaris2.8/libffi'
make[4]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.
...
make[3]: Entering directory `/export/u3/lucier/programs/gcc/gcc-3.1/objdir-sparcv9/sparcv9-sun-solaris2.8/zlib'
make[3]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.
...
make[4]: Entering directory `/export/u3/lucier/programs/gcc/gcc-3.1/objdir-sparcv9/sparcv9-sun-solaris2.8/boehm-gc'
make[4]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.
...
make[3]: Entering directory `/export/u3/lucier/programs/gcc/gcc-3.1/objdir-sparcv9/sparcv9-sun-solaris2.8/libjava'
make[3]: warning: jobserver unavailable: using -j1.  Add `+' to parent make rule.

I must have noticed it with libjava since it's bigger than the others.

Anybody want to take a shot at getting around this?

Brad