[Users] Virtual Memory Problems

[Al Sparks]

I have a VE running CentOS.  I'm in the process of trying to compile
php and when I do a
     $ make
I get lots of output and eventually get:
     virtual memory exhausted: Cannot allocate memory

I tried stopping the VE and starting it again, and noticed the "make"
made it farther along before I got that error.  What can I do to give
the VE more memory?  This is a non-production system, so I'm going to
try killing more VE's and seeing if that helps, but I thought I'd also
ask for other hints.
   === Al