I tried ‘sudo ldconfig’ and then regenerated the flowgraph after re-building
the application. I see the same issue as before. Here is the output of ‘ldd’.
How do I know what is missing?
linux-vdso.so.1 => (0x00007ffc10dfd000)
libboost_system.so.1.58.0 =>
/usr/lib/x86_64-linux-gnu/libboost_system.so.1.58.0 (0x00007fc09f77b000)
libgnuradio-runtime-3.7.11.1.so.0.0.0 =>
/usr/local/lib/libgnuradio-runtime-3.7.11.1.so.0.0.0 (0x00007fc09f48f000)
libgnuradio-pmt-3.7.11.1.so.0.0.0 =>
/usr/local/lib/libgnuradio-pmt-3.7.11.1.so.0.0.0 (0x00007fc09f23f000)
libstdc++.so.6 => /usr/lib/x86_64-linux-gnu/libstdc++.so.6
(0x00007fc09eebd000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fc09ebb4000)
libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1
(0x00007fc09e99d000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fc09e5d3000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0
(0x00007fc09e3b6000)
libvolk.so.1.3 => /usr/local/lib/libvolk.so.1.3 (0x00007fc09dfea000)
libboost_program_options.so.1.58.0 =>
/usr/lib/x86_64-linux-gnu/libboost_program_options.so.1.58.0
(0x00007fc09dd6c000)
libboost_filesystem.so.1.58.0 =>
/usr/lib/x86_64-linux-gnu/libboost_filesystem.so.1.58.0 (0x00007fc09db54000)
libboost_thread.so.1.58.0 =>
/usr/lib/x86_64-linux-gnu/libboost_thread.so.1.58.0 (0x00007fc09d92d000)
librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007fc09d725000)
/lib64/ld-linux-x86-64.so.2 (0x000055ff2d4b7000)
liborc-0.4.so.0 => /usr/lib/x86_64-linux-gnu/liborc-0.4.so.0
(0x00007fc09d4a4000)
Sent from Mail for Windows 10
From: Nicolas Cuervo
Sent: Sunday, July 9, 2017 10:49 PM
To: Vipin Sharma
Cc: GNURadio Discussion List
Subject: Re: [Discuss-gnuradio] Runtime AttributeError for custom block
Hi,
it is nice that you look for the error before posting, but does your module
actually need the ITPP libraries? because that might have been something
specific for the case that you quoted.
To check if your problem is linking, first run the following command:
$ sudo ldconfig
and then try to start again your application in GRC.
If the problem persists, then you have to look for some required library which
linking is not made properly. To check the linking you can run the "ldd"
command on the generated shared object of your module (which, based on your
email, is supposed to be called something like 'libgnuradio-a1System.so')
Regards,
- Nicolas
On Mon, Jul 10, 2017 at 6:31 AM, Vipin Sharma <vipinsha...@photonpace.com>
wrote:
I have a Python flowgraph which instantiates a few custom blocks (written in
C++). The flow graph generate is fine but when I try to run the program through
GUI, I get attribute errors as shown below.
After researching a bit, I found out that one potential cause could be missing
ITPP libraries as discussed in an old post here:
https://lists.gnu.org/archive/html/discuss-gnuradio/2015-02/msg00158.html.
I followed through suggested changes (adding following lines in my
lib/CMakeList.txt). This doesn't seem to help at all; I don't see any extra
libraries being included in the final a1System.so library under build/lib/
after the 'make build'. This likely implies I am still missing a critical step
for the custom blocks in C++. Any ideas how I can proceed?
Excerpt from lib/CMakeList.txt file:
list(APPEND a1System_libs
${GNURADIO_ALL_LIBRARIES}
${ITPP_LIBRARIES}
)
target_link_libraries(gnuradio-a1System ${Boost_LIBRARIES} ${a1System_libs})
Runtime Log from GRC:
File "/home/vipin/a1/grc/a1-rfe+mimo/gr-a1System/build/top_block.py", line 234,
in <module>
main()
File "/home/vipin/a1/grc/a1-rfe+mimo/gr-a1System/build/top_block.py", line 222,
in main
tb = top_block_cls()
File "/home/vipin/a1/grc/a1-rfe+mimo/gr-a1System/build/top_block.py", line 164,
in __init__
self.a1System_TargetDetector_cf_0 = a1System.TargetDetector_cf(512, 10, 1024,
2, 5, 1, 1, 1, 1)
AttributeError: 'module' object has no attribute 'TargetDetector_cf'
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