[Discuss-gnuradio] uhd_fft missing

[Chris Stankevitz]

Hello,

Using gentoo linux I installed uhd and gnuradio with the commands
"emerge uhd" and "emerge gnuradio".  According to
http://gnuradio.org/redmine/projects/gnuradio/wiki/HowToUse:

"GNU Radio comes with a large variety of tools and programs... The
most commonly used tools include uhd_fft"

Unfortunately I do not have uhd_fft on my system.  I do have
uhd_cal_rx_iq_balance, uhd_cal_tx_iq_balance , uhd_images_downloader,
uhd_cal_tx_dc_offset, uhd_find_devices, and uhd_usrp_probe.

According to 
http://gnuradio.org/redmine/projects/gnuradio/wiki/InstallingGRFromSource:

"If you want to be able to use USRP devices, you need to install UHD
before installing GNU Radio."

Questions:

Q1: Why do I not have uhd_fft on my system?

Q2: What is the technically going on that leads to the warning about
installing UHD before gnuradio?  What are the consequences of
installing UHD after GNU Radio?

Q3: Which package provides the file uhd_fft: GNU Radio, UHD, or something else?

Thank you,

Chris