GDC 4.7 build problems on Ubuntu 12.10

[Timo Sintonen]

Making gcc with more than -j2 always fails for me at some random 
point. The process generates lots of config files and libraries 
that are needed later in a compilation. These files may not be in 
dependencies. Maybe that would be too complicated, the files 
should be in place anyway if the process has got that far. In 
parallel build some threads may get too far referencing files 
that another thread has not been generated yet.

I have often been able to succesfully continue from that point by 
just giving make without -j. If not, I just start from the 
beginning with -j2 or without  -j .