Description of problem:
cannot build packages with usrp.h since it depends on a missing file, namely
db_base.h (in /usr/include/db_base.h), which is included in gnuradio-devel, which is not a requirement of usrp-devel (nor should it be).
Since usrp.h includes db_base.h, and usrp.h is in usrp-devel, db_base.h should also be in usrp-devel
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. install usrp-devel
2. try to compile anything with usrp (for instance openbts)
fail on missing db_base.h included from usrp_basic.h line 42
Merged to gnuradio as proposed in bug 516352.