I followed the directions here:
http://dot-bit.org/BuildNamecoinQTFromSourceOn this step:
qmake "USE_UPNP=-"
I get these errors:
Project MESSAGE: Building without UPNP support
Project MESSAGE: Building without IPv6 support
sh: 1: /usr/lib/x86_64-linux-gnu/qt5/bin/lrelease: not found
WARNING: Failure to find: auxpow.cpp
WARNING: Failure to find: headers.h
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_bg.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_ca_ES.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_cs.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_da.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_de.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_el_GR.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_en.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_es.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_es_CL.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_et.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_eu_ES.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_fa.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_fa_IR.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_fi.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_fr.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_fr_CA.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_he.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_hr.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_hu.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_it.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_lt.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_nb.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_nl.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_pl.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_pt_BR.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_pt_PT.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_ro_RO.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_ru.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_sk.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_sr.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_sv.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_tr.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_uk.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_zh_CN.qm'
RCC: Error in '../src/qt/bitcoin.qrc': Cannot find file 'locale/bitcoin_zh_TW.qm'
I also tried using QT Creator and the namecoin-qt.pro file but that gave me an error about auxpow.cpp. I'd like to use Namecoin for something but if I can't get it to work then my users certainly won't be able to.