# Re: Fwd: AttributeError: 'module' object has no attri **URL:** \ **Category:** GNU Radio\ **Created:** [March 20, 2015, 5:44pm UTC](https://www.ruby-forum.com/t/re-fwd-attributeerror-module-object-has-no-attri/234675 "2015-03-20T17:44:27Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\ **Post date:** [March 20, 2015, 5:44pm UTC](https://www.ruby-forum.com/t/re-fwd-attributeerror-module-object-has-no-attri/234675/1 "2015-03-20T17:44:27Z")
Hi Tom, I have a similar problem. I added a pretty plain block, which uses #include \ and changed my set() according to your description to set(GR\_REQUIRED\_COMPONENTS RUNTIME BLOCKS PMT PDU) All compiles well, but the same error as in this thread. Do you have a clue, what I am missing? Regards Stephan > When you build an OOT module, it only knows to look for and link against the GNU > Radio runtime library. If you look in the top-level CMakeLists.txt file of your > project, you’ll > see a line (somewhere around line 113) that declares this: > set(GR\_REQUIRED\_COMPONENTS RUNTIME) > But now you are trying to use an FFT filter, which is in the GNU Radio filter > library (libgnuradio-filter). You need to tell the project to both find and link > against this library now, > so change that line to: > set(GR\_REQUIRED\_COMPONENTS RUNTIME FILTER) > For future reference, nearly this exact problem is mentioned in out OOT > configuration tutorial: > [http://gnuradio.org/redmine/projects/gnuradio/wiki/OutOfTreeModulesConfig](http://gnuradio.org/redmine/projects/gnuradio/wiki/OutOfTreeModulesConfig) > Tom Mit freundlichen Gren / Best regards Stephan Ludwig Robert Bosch GmbH Corporate Sector Research & Advance Engineering, Communication Technology (CR/AEH4) Renningen 70465 Stuttgart GERMANY [www.bosch.com](http://www.bosch.com)[http://www.bosch.com](http://www.bosch.com) Tel. +49(711)811-8809 Fax +49(711)811-1052 Mobile +49(172)5630639 removed\_email\_address@domain.invalid[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) Registered Office: Stuttgart, Registration Court: Amtsgericht Stuttgart, HRB 14000; Chairman of the Supervisory Board: Franz Fehrenbach; Managing Directors: Dr. Volkmar Denner, Dr. Stefan Asenkerschbaumer, Dr. Rolf Bulander, Dr. Stefan Hartung, Dr. Dirk Hoheisel, Christoph Kbel, Uwe Raschke, Wolf-Henning Scheider, Dr. Werner Struth, Peter Tyroller ---
**Author:** ![Ludwig\_Stephan\_SCR](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/e36b37/32.png) [@Ludwig\_Stephan\_SCR](https://www.ruby-forum.com/u/Ludwig_Stephan_SCR)\ **Post date:** [March 20, 2015, 6:00pm UTC](https://www.ruby-forum.com/t/re-fwd-attributeerror-module-object-has-no-attri/234675/2 "2015-03-20T18:00:20Z")
On Fri, Mar 20, 2015 at 12:42 PM, Ludwig Stephan (CR/AEH4) \< [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)\> wrote: > Regards > Stephan I haven’t a clue. I just tried it and it worked fine. To the impl.cc file, I added: #include \ … gr::blocks::pdu::vector\_type i = gr::blocks::pdu::float\_t; size\_t t = gr::blocks::pdu::itemsize(i); And then I added BLOCKS to the GR\_REQUIRED\_COMPONENTS and it worked fine. Without the cmake changes, I get the same error, but otherwise, it worked as expected here. Tom ---
**Author:** ![Ludwig\_Stephan\_SCR](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/e36b37/32.png) [@Ludwig\_Stephan\_SCR](https://www.ruby-forum.com/u/Ludwig_Stephan_SCR)\ **Post date:** [March 20, 2015, 5:48pm UTC](https://www.ruby-forum.com/t/re-fwd-attributeerror-module-object-has-no-attri/234675/3 "2015-03-20T17:48:53Z")
I forgot to say, that this is a tagged\_stream block. I take accept pdu messages with pmt::blob payload and convert to a tagged stream of char (similar to pdu\_to\_tagged\_stream block) Mit freundlichen Gren / Best regards Stephan Ludwig Robert Bosch GmbH Corporate Sector Research & Advance Engineering, Communication Technology (CR/AEH4) Renningen 70465 Stuttgart GERMANY [www.bosch.com](http://www.bosch.com)[http://www.bosch.com](http://www.bosch.com) Tel. +49(711)811-8809 Fax +49(711)811-1052 Mobile +49(172)5630639 [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) Registered Office: Stuttgart, Registration Court: Amtsgericht Stuttgart, HRB 14000; Chairman of the Supervisory Board: Franz Fehrenbach; Managing Directors: Dr. Volkmar Denner, Dr. Stefan Asenkerschbaumer, Dr. Rolf Bulander, Dr. Stefan Hartung, Dr. Dirk Hoheisel, Christoph Kbel, Uwe Raschke, Wolf-Henning Scheider, Dr. Werner Struth, Peter Tyroller Von: [discuss-gnuradio-bounces+stephan.ludwig2=removed\_email\_address@domain.invalid](mailto:discuss-gnuradio-bounces+stephan.ludwig2=removed_email_address@domain.invalid) [[mailto:discuss-gnuradio-bounces+stephan.ludwig2=removed\_email\_address@domain.invalid](mailto:discuss-gnuradio-bounces+stephan.ludwig2=removed_email_address@domain.invalid)] Im Auftrag von Ludwig Stephan (CR/AEH4) Gesendet: Freitag, 20. Mrz 2015 17:43 An: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) Betreff: Re: [Discuss-gnuradio] Fwd: AttributeError: ‘module’ object has no attri Hi Tom, I have a similar problem. I added a pretty plain block, which uses #include \ and changed my set() according to your description to set(GR\_REQUIRED\_COMPONENTS RUNTIME BLOCKS PMT PDU) All compiles well, but the same error as in this thread. Do you have a clue, what I am missing? Regards Stephan > When you build an OOT module, it only knows to look for and link against the GNU > Radio runtime library. If you look in the top-level CMakeLists.txt file of your > project, you’ll > see a line (somewhere around line 113) that declares this: > set(GR\_REQUIRED\_COMPONENTS RUNTIME) > But now you are trying to use an FFT filter, which is in the GNU Radio filter > library (libgnuradio-filter). You need to tell the project to both find and link > against this library now, > so change that line to: > set(GR\_REQUIRED\_COMPONENTS RUNTIME FILTER) > For future reference, nearly this exact problem is mentioned in out OOT > configuration tutorial: > [http://gnuradio.org/redmine/projects/gnuradio/wiki/OutOfTreeModulesConfig](http://gnuradio.org/redmine/projects/gnuradio/wiki/OutOfTreeModulesConfig) > Tom Mit freundlichen Gren / Best regards Stephan Ludwig Robert Bosch GmbH Corporate Sector Research & Advance Engineering, Communication Technology (CR/AEH4) Renningen 70465 Stuttgart GERMANY [www.bosch.com](http://www.bosch.com)[http://www.bosch.com](http://www.bosch.com) Tel. +49(711)811-8809 Fax +49(711)811-1052 Mobile +49(172)5630639 [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) Registered Office: Stuttgart, Registration Court: Amtsgericht Stuttgart, HRB 14000; Chairman of the Supervisory Board: Franz Fehrenbach; Managing Directors: Dr. Volkmar Denner, Dr. Stefan Asenkerschbaumer, Dr. Rolf Bulander, Dr. Stefan Hartung, Dr. Dirk Hoheisel, Christoph Kbel, Uwe Raschke, Wolf-Henning Scheider, Dr. Werner Struth, Peter Tyroller ---
**Author:** ![Ludwig\_Stephan\_SCR](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/e36b37/32.png) [@Ludwig\_Stephan\_SCR](https://www.ruby-forum.com/u/Ludwig_Stephan_SCR)\ **Post date:** [March 23, 2015, 10:31am UTC](https://www.ruby-forum.com/t/re-fwd-attributeerror-module-object-has-no-attri/234675/4 "2015-03-23T10:31:54Z")
Thanks Tom for your immediate response. I re-created the blocks in my module and copied sources over from tagged\_stream\_to\_pdu, which works not. I cannot reproduce the described error anymore, which means the issue is solved for me. The diff between old and new code does not show any differences but the old block name was tagged\_stream2pdu. Nevertheless, thanks for your help.. Mit freundlichen Grüßen / Best regards Stephan Ludwig Robert Bosch GmbH Corporate Sector Research & Advance Engineering, Communication Technology (CR/AEH4) Renningen 70465 Stuttgart GERMANY [www.bosch.com](http://www.bosch.com)[http://www.bosch.com](http://www.bosch.com) Tel. +49(711)811-8809 Fax +49(711)811-1052 Mobile +49(172)5630639 [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) Registered Office: Stuttgart, Registration Court: Amtsgericht Stuttgart, HRB 14000; Chairman of the Supervisory Board: Franz Fehrenbach; Managing Directors: Dr. Volkmar Denner, Dr. Stefan Asenkerschbaumer, Dr. Rolf Bulander, Dr. Stefan Hartung, Dr. Dirk Hoheisel, Christoph Kübel, Uwe Raschke, Wolf-Henning Scheider, Dr. Werner Struth, Peter Tyroller Von: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) [[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] Im Auftrag von Tom R. Gesendet: Freitag, 20. März 2015 17:58 An: Ludwig Stephan (CR/AEH4) Cc: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) Betreff: Re: [Discuss-gnuradio] Fwd: AttributeError: ‘module’ object has no attri On Fri, Mar 20, 2015 at 12:42 PM, Ludwig Stephan (CR/AEH4) \<[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)\> wrote: Hi Tom, I have a similar problem. I added a pretty plain block, which uses #include \ and changed my set() according to your description to set(GR\_REQUIRED\_COMPONENTS RUNTIME BLOCKS PMT PDU) All compiles well, but the same error as in this thread. Do you have a clue, what I am missing? Regards Stephan I haven’t a clue. I just tried it and it worked fine. To the impl.cc file, I added: #include \ … gr::blocks::pdu::vector\_type i = gr::blocks::pdu::float\_t; size\_t t = gr::blocks::pdu::itemsize(i); And then I added BLOCKS to the GR\_REQUIRED\_COMPONENTS and it worked fine. Without the cmake changes, I get the same error, but otherwise, it worked as expected here. Tom > When you build an OOT module, it only knows to look for and link against the GNU > Radio runtime library. If you look in the top-level CMakeLists.txt file of your > project, you’ll > see a line (somewhere around line 113) that declares this: > set(GR\_REQUIRED\_COMPONENTS RUNTIME) > But now you are trying to use an FFT filter, which is in the GNU Radio filter > library (libgnuradio-filter). You need to tell the project to both find and link > against this library now, > so change that line to: > set(GR\_REQUIRED\_COMPONENTS RUNTIME FILTER) > For future reference, nearly this exact problem is mentioned in out OOT > configuration tutorial: > [http://gnuradio.org/redmine/projects/gnuradio/wiki/OutOfTreeModulesConfig](http://gnuradio.org/redmine/projects/gnuradio/wiki/OutOfTreeModulesConfig) > Tom Mit freundlichen Grüßen / Best regards Stephan Ludwig Robert Bosch GmbH Corporate Sector Research & Advance Engineering, Communication Technology (CR/AEH4) Renningen 70465 Stuttgart GERMANY [www.bosch.com](http://www.bosch.com)[http://www.bosch.com](http://www.bosch.com) Tel. +49(711)811-8809tel:%2B49(711)811-8809 Fax +49(711)811-1052tel:%2B49(711)811-1052 Mobile +49(172)5630639tel:%2B49(172)5630639 [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) Registered Office: Stuttgart, Registration Court: Amtsgericht Stuttgart, HRB 14000; Chairman of the Supervisory Board: Franz Fehrenbach; Managing Directors: Dr. Volkmar Denner, Dr. Stefan Asenkerschbaumer, Dr. Rolf Bulander, Dr. Stefan Hartung, Dr. Dirk Hoheisel, Christoph Kübel, Uwe Raschke, Wolf-Henning Scheider, Dr. Werner Struth, Peter Tyroller