# Out-of-tree module build fails for lack of Doxygen, despite -DENABLE\_DOXYGEN=OFF **URL:** \ **Category:** GNU Radio\ **Created:** [April 5, 2013, 10:41pm UTC](https://www.ruby-forum.com/t/out-of-tree-module-build-fails-for-lack-of-doxygen-despite-denable-doxygen-off/228005 "2013-04-05T22:41:14Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Monahan-MitchellS\_T](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/8edcca/32.png) [@Monahan-MitchellS\_T](https://www.ruby-forum.com/u/Monahan-MitchellS_T)\ **Post date:** [April 5, 2013, 10:41pm UTC](https://www.ruby-forum.com/t/out-of-tree-module-build-fails-for-lack-of-doxygen-despite-denable-doxygen-off/228005/1 "2013-04-05T22:41:14Z")
I first used gr\_modtool.py to successfully create my out-of-tree module on an Ubuntu 12.04 LTS x86 system (GNU Radio 3.6.4.1). I am now building my module on an Ubuntu system that does not have /usr/bin/doxygen (the new system is based on 12.04 LTS for Arm). Despite specifying -DENABLE\_DOXYGEN=OFF, the build fails thusly: # cmake -DENABLE\_DOXYGEN=OFF …/ – Build type not specified: defaulting to release. – Configuring done – Generating done – Build files have been written to: /src/gr-mymodule/build # make [5%] Built target gnuradio-mymodule [16%] Built target test-mymodule [22%] Built target \_mymodule\_swig\_doc\_tag [27%] Built target \_mymodule\_swig\_swig\_tag [33%] Generating doxygen xml for mymodule\_swig\_doc docs /bin/sh: 1: /usr/bin/doxygen: not found make[2]: \*\*\* [swig/mymodule\_swig\_doc\_swig\_docs/xml/index.xml] Error 127 make[1]: \*\*\* [swig/CMakeFiles/\_mymodule\_swig.dir/all] Error 2 make: \*\*\* [all] Error 2 I have duplicated the above failure on the Ubuntu 12.04 LTS x86 machine by first doing “sudo mv /usr/bin/doxygen /usr/bin/doxygen\_tmp” to simulate no doxygen installed. I am trying the same experiment on the gnuradio tree (3.6.4.1) on Ubuntu 12.04 LTS x86; if it builds, maybe I can compare various files to see the difference. But maybe one of you can beat me to the solution or a work-around 🙂 Thanks in advance, Tim Monahan-Mitchell ---
**Author:** ![Monahan-MitchellS\_T](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/8edcca/32.png) [@Monahan-MitchellS\_T](https://www.ruby-forum.com/u/Monahan-MitchellS_T)\ **Post date:** [April 5, 2013, 11:58pm UTC](https://www.ruby-forum.com/t/out-of-tree-module-build-fails-for-lack-of-doxygen-despite-denable-doxygen-off/228005/2 "2013-04-05T23:58:59Z")
> an Ubuntu 12.04 LTS x86 system (GNU Radio 3.6.4.1). > – Build files have been written to: /src/gr-mymodule/build > make: \*\*\* [all] Error 2 > > I have duplicated the above failure on the Ubuntu 12.04 LTS x86 machine by > first doing “sudo mv /usr/bin/doxygen /usr/bin/doxygen\_tmp” to simulate > no doxygen installed. > > I am trying the same experiment on the gnuradio tree (3.6.4.1) on Ubuntu > 12.04 LTS x86; if it builds, maybe I can compare various files to see the > difference. The gnuradio tree build was able to handle this test, so that is good. > But maybe one of you can beat me to the solution or a work-around 🙂 I found a work-around by a hostile takeover of the FindDoxygen module of Cmake: (with sudo as needed) # echo ‘set(DOXYGEN\_FOUND “NO”)’ > /usr/share/cmake-2.8/Modules/FindDoxygen.cmake # echo ‘set(DOXYGEN\_DOT\_FOUND “NO”)’ > > /usr/share/cmake-2.8/Modules/FindDoxygen.cmake I will leave it to the smarter people of this list to find a better solution. Cheers! ---
**Author:** ![Monahan-MitchellS\_T](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/m/8edcca/32.png) [@Monahan-MitchellS\_T](https://www.ruby-forum.com/u/Monahan-MitchellS_T)\ **Post date:** [April 6, 2013, 3:51pm UTC](https://www.ruby-forum.com/t/out-of-tree-module-build-fails-for-lack-of-doxygen-despite-denable-doxygen-off/228005/3 "2013-04-06T15:51:01Z")
On Fri, Apr 5, 2013 at 5:56 PM, Monahan-Mitchell, Tim [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > an Ubuntu 12.04 LTS x86 system (GNU Radio 3.6.4.1). > > – Build files have been written to: /src/gr-mymodule/build > > make: \*\*\* [all] Error 2 > > > But maybe one of you can beat me to the solution or a work-around 🙂 > > I found a work-around by a hostile takeover of the FindDoxygen module of Cmake: > > (with sudo as needed) > > # echo ‘set(DOXYGEN\_FOUND “NO”)’ \>/usr/share/cmake-2.8/Modules/FindDoxygen.cmake > > # echo ‘set(DOXYGEN\_DOT\_FOUND “NO”)’ > > > /usr/share/cmake-2.8/Modules/FindDoxygen.cmake > > I will leave it to the smarter people of this list to find a better solution. > Cheers! Hi Tim, Can you open up a ticket on the [gnuradio.org](http://gnuradio.org) wiki with this information? That will help us track it better. Tom