[CentOS] Another rpm question re %make

Thanks for the pointers on cross building rpms. I have downloaded mock from epel and will take a look at that shortly.

For the moment however, I am working on a straight x86_64 build of ruby-1.9.1-1 and I am running into this error:

checking for nroff... /usr/bin/nroff creating config.h configure: creating ./config.status config.status: creating Makefile + %make /var/tmp/rpm-tmp.57843: line 58: fg: no job control error: Bad exit status from /var/tmp/rpm-tmp.57843 (%build)

I cannot fathom what the foreground call is supposed to accomplish or why it is happening.

Can anyone nudge me towards an online reference where I might discover how to interpret this?