# Problems building **URL:** \ **Category:** GNU Radio\ **Created:** [November 9, 2013, 9:14am UTC](https://www.ruby-forum.com/t/problems-building/237377 "2013-11-09T09:14:31Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![Detlef\_R](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/58f4c7/32.png) [@Detlef\_R](https://www.ruby-forum.com/u/Detlef_R)\ **Post date:** [November 9, 2013, 9:14am UTC](https://www.ruby-forum.com/t/problems-building/237377/1 "2013-11-09T09:14:31Z")
I am trying to install gnuradio on Arch but I am having issues with qtgui and pfb\_clock\_sync. I use qt so I need to get this figured out. Any ideas? The following tests FAILED: 130 - qa\_pfb\_clock\_sync (Failed) 166 - qa\_qtgui (Failed) # 151 130/179 Testing: qa\_pfb\_clock\_sync 3152 130/179 Test: qa\_pfb\_clock\_sync 3153 Command: “/usr/bin/sh” “/home/scap/AUR/gnuradio-git/src/gnuradio/build/gr-digital/python/digital/qa\_pfb\_clock\_sync\_test.sh” 3154 Directory: /home/scap/AUR/gnuradio-git/src/gnuradio/build/gr-digital/python/digital 3155 “qa\_pfb\_clock\_sync” start time: Nov 09 03:08 EST 3156 Output: 3157 ---------------------------------------------------------- 3158 .F 3159 ## 3160 FAIL: test02 ( **main**.test\_pfb\_clock\_sync) 3161 ## 3162 Traceback (most recent call last): 3163 File “/home/scap/AUR/gnuradio-git/src/gnuradio/gr-digital/python/digital/qa\_pfb\_clock\_sync.py”, line 139, in test02 3164 self.assertComplexTuplesAlmostEqual(expected\_result, dst\_data, 1) 3165 File “/home/scap/AUR/gnuradio-git/src/gnuradio/gnuradio-runtime/python/gnuradio/gr\_unittest.py”, line 74, in assertComplexTuplesAl mostEqual 3166 self.assertComplexAlmostEqual (a[i], b[i], places, msg) 3167 File “/home/scap/AUR/gnuradio-git/src/gnuradio/gnuradio-runtime/python/gnuradio/gr\_unittest.py”, line 47, in assertComplexAlmostEq ual 3168 (msg or ‘%s != %s within %s places’ % (`first`, `second`, `places` )) 3169 AssertionError: 1 != -1.0000078678131104 within 1 places 3170 3171 3172 Ran 2 tests in 0.029s 3173 3174 FAILED (failures=1) 3175 Using Volk machine: sse4\_2\_64\_orc 3176 3177 Test time = 0.64 sec 3178 ---------------------------------------------------------- 3179 Test Failed. 3180 “qa\_pfb\_clock\_sync” end time: Nov 09 03:08 EST 3181 “qa\_pfb\_clock\_sync” time elapsed: 00:00:00 and 3895 3896 166/179 Testing: qa\_qtgui 3897 166/179 Test: qa\_qtgui 3898 Command: “/usr/bin/sh” “/home/scap/AUR/gnuradio-git/src/gnuradio/build/gr-qtgui/python/qtgui/qa\_qtgui\_test.sh” 3899 Directory: /home/scap/AUR/gnuradio-git/src/gnuradio/build/gr-qtgui/python/qtgui 3900 “qa\_qtgui” start time: Nov 09 03:08 EST 3901 Output: 3902 ---------------------------------------------------------- 3903 /home/scap/AUR/gnuradio-git/src/gnuradio/build/gr-qtgui/python/qtgui/qa\_qtgui\_test.sh: line 7: 25505 Segmentation fault (core d umped) /usr/bin/python2 -B /home/scap/AUR/gnuradio-git/src/gnuradio/gr-qtgui/python/qtgui/qa\_qtgui.py 3904 3905 Test time = 0.42 sec 3906 ---------------------------------------------------------- 3907 Test Failed. 3908 “qa\_qtgui” end time: Nov 09 03:08 EST 3909 “qa\_qtgui” time elapsed: 00:00:00 ---
**Author:** ![sprsquish](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/d9b06d/32.png) [@sprsquish](https://www.ruby-forum.com/u/sprsquish)\ **Post date:** [November 9, 2013, 2:30pm UTC](https://www.ruby-forum.com/t/problems-building/237377/2 "2013-11-09T14:30:30Z")
On Sat, Nov 9, 2013 at 3:13 AM, Jeff S. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > 3152 130/179 Test: qa\_pfb\_clock\_sync > 3161 ---------------------------------------------------------------------- > 3169 AssertionError: 1 != -1.0000078678131104 within 1 places > 3180 “qa\_pfb\_clock\_sync” end time: Nov 09 03:08 EST > /home/scap/AUR/gnuradio-git/src/gnuradio/build/gr-qtgui/python/qtgui > 3907 Test Failed. > 3908 “qa\_qtgui” end time: Nov 09 03:08 EST > 3909 “qa\_qtgui” time elapsed: 00:00:00 There were quite a few recent changes to both. But when posting problems like this, please provide: - The version and architecture of the OS (32- or 64-bit) - The version or git commit of GNU Radio you are working off of - With qtgui issues, the version of Qt and Qwt you are using I’m trying this myself on various Linux VMs I have, both 64 and 32 bit, and not coming up with similar issues. Tom ---
**Author:** ![sprsquish](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/d9b06d/32.png) [@sprsquish](https://www.ruby-forum.com/u/sprsquish)\ **Post date:** [November 9, 2013, 2:52pm UTC](https://www.ruby-forum.com/t/problems-building/237377/3 "2013-11-09T14:52:07Z")
On Sat, Nov 9, 2013 at 8:28 AM, Tom R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > 151 130/179 Testing: qa\_pfb\_clock\_sync > > 3160 FAIL: test02 ( **main**.test\_pfb\_clock\_sync) > > 3168 (msg or ‘%s != %s within %s places’ % (`first`, `second`, `places` )) > > 3179 Test Failed. > > 3899 Directory: > > 3906 ---------------------------------------------------------- > > - With qtgui issues, the version of Qt and Qwt you are using > > I’m trying this myself on various Linux VMs I have, both 64 and 32 > bit, and not coming up with similar issues. > > Tom Found a system that has the problems you described. The pfb\_clock\_sync seems to be intermittent. It’s locking at two different points and so is off by 1. That’s not a huge problem, though it shouldn’t be happening. The qtgui issue looks like it’s with the qtgui.sink\_c and qtgui.sink\_f blocks. Everything else works fine. Working on a fix now. Tom ---
**Author:** ![sprsquish](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/d9b06d/32.png) [@sprsquish](https://www.ruby-forum.com/u/sprsquish)\ **Post date:** [November 9, 2013, 3:48pm UTC](https://www.ruby-forum.com/t/problems-building/237377/4 "2013-11-09T15:48:11Z")
On Sat, Nov 9, 2013 at 8:50 AM, Tom R. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > 3159 ====================================================================== > > > line 47, in assertComplexAlmostEq ual > > > 3178 ---------------------------------------------------------- “/home/scap/AUR/gnuradio-git/src/gnuradio/build/gr-qtgui/python/qtgui/qa\_qtgui\_test.sh” > > > 3905 Test time = 0.42 sec > > > > - The version or git commit of GNU Radio you are working off of > > is off by 1. That’s not a huge problem, though it shouldn’t be > > happening. > > The qtgui issue looks like it’s with the qtgui.sink\_c and qtgui.sink\_f > blocks. Everything else works fine. Working on a fix now. > > Tom Ok, fixed it. The qtgui problem was really only a problem if we didn’t define the qApplication outside of a block, which is almost never the case, so most applications would have been fine. But they changed a few rules on me on how we have to treat that object. It’s explained more in the git commit and in comments in the constructors of the qtgui sinks. The pfb\_clock\_sync issue was mostly due to being too loose in one of the parameters. I fixed the damping factor so we are now critically damped (previously, it was seriously over-damped) and so convergence is faster. I think there might have also been a small flaw in the set\_history value for the \_fff version of the block (which is where the failures were occurring). Things should be behaving properly for you now. Thanks for the bug report. Tom