Plugin dont show up after manual install (ubuntu)

[Eublem]

Hello, I have just complied and installed a plugin for OpenCPN (RTL SDR). Now, there is a .so file in /usr/local/lib/opencpn called librtlsdrpi.so.



I did the exact same thing on a different computer earlier, and it worked. But this time around it doesnt show up in the settings->plugins in openCPN.



I have been trying to locate some log files, without luck. The only log file documentation online is for windows and mac.




TLDR
Installed rtlsdr for opencpn manually, but dont show up in openCPN.

[Eublem]

Does someone know if downgrading openCPN to 5.0 might do the trick? And if so, is there a simple way to download an older version? I tried doing it from source, but got errors i couldnt solve.

[tom_BigSpeedy]

I can confirm a similar behaviour with 5.2.0 on Fedora 32 (whereas 5.0.0 works correctly as expected).
I did compile from source (as there is no package for Fedora 32/5.2.0 yet) and ran O in "portable mode" (commandline option -p), as it is my development environment.
O 5.2.0 starts, but no plugins were visible at all, although the plugin .so files were in the usual plugin subdirectory...

opencpn.log showed the reason :
It says it's using LD_LIBRARY_PATH to determine the plugin directory now (since 5.2.0), and ends up in searching in /home/tom/opencpn/plugins/lib.
(In 5.0.0 my plugins were placed in /home/tom/opencpn/plugins)

This is no way part of my LD_LIBRARY_PATH, so it's probably a bug.

But anyway, adding a subdirectory lib to the plugins directory and moving the .so files there did the trick ...

So maybe give it a quick try and add a lib-subdirectory to the plugins dir and place the .so there ...

BR,
Thomas

[Eublem]

Thats awesome Thomas! So glad for you reply! Cant wait to check if that does the trick. Will let you know

[Eublem]

Unfortunately, that didn't help. I tried placing the .so file inside the other plugin folder as well, without luck.



sudo mv /usr/local/lib/opencpn/lib/librtlsdr_pi.so /usr/lib/opencpn/lib/librtlsdr_pi.so




I am trying to downgrade to opencpn 5.0 but I keep getting this error:

-- Could NOT find wxWidgets (missing: wxWidgets_LIBRARIES wxWidgets_INCLUDE_DIRS)
-- Could not find wxWidgets webview add-on
CMake Error at /usr/share/cmake-3.10/Modules/FindPackageHandleStandardArgs.cmake:137 (message):
Could NOT find wxWidgets (missing: wxWidgets_LIBRARIES
wxWidgets_INCLUDE_DIRS)
Call Stack (most recent call first):
/usr/share/cmake-3.10/Modules/FindPackageHandleStandardArgs.cmake:378 (_FPHSA_FAILURE_MESSAGE)
/usr/share/cmake-3.10/Modules/FindwxWidgets.cmake:953 (find_package_handle_standard_args)
CMakeLists.txt:1063 (FIND_PACKAGE)

[bdbcat]

Eublem...
May we see the logfile from the OCPN 5.2 installation?


Thanks
Dave

[Eublem]

I cant find the log file anywhere...?

[CarCode]

Originally Posted by Eublem

I cant find the log file anywhere...?

What about RTFM?

[Eublem]

Originally Posted by CarCode

What about RTFM?

When I say anywhere, I mean literally anywhere.




The manual says the file is within the home directory, but thats not the case for me:

$gedit `echo $HOME/opencpn.log`

[Eublem]

Ok. So I figured there is a hidden opencpn folder inside the home directory. I tried moving the plugin both in a new lib and the original plugin folder... It didnt solve it

$HOME/.opencpn/plugins/lib/
$HOME/.opencpn/plugins/

[transmitterdan]

Originally Posted by Eublem

Ok. So I figured there is a hidden opencpn folder inside the home directory. I tried moving the plugin both in a new lib and the original plugin folder... It didnt solve it

Look in the log file. It tells you exactly the folders in which it searches for plugins. Log file is found easily by clicking the help icon and there you find a link to the log file.

[cagney]

@Eublem

I have had some problems with the rtlsdr plugin as well (Ubuntu Focal).
A log message such as this

11:59:51.222 ERROR pluginmanager.cpp:2027 Plugin "/usr/lib/opencpn/librtlsdr_pi.so" is of another binary flavor than the main module.

Which of course stopped the plugin from running.
But...... a day or so ago, this was corrected and a new version of O was installed. Now this plugin works as expected.
I have rtlsdr version 1.4.

It's not clear exactly how you installed your plugin....
To be consistent and for ease of use, I always run "make package" and install the resulting .deb package.

Bottom line....update your system and try again!

Thomas

[Eublem]

Originally Posted by cagney

@Eublem

I have had some problems with the rtlsdr plugin as well (Ubuntu Focal).
A log message such as this


Which of course stopped the plugin from running.
But...... a day or so ago, this was corrected and a new version of O was installed. Now this plugin works as expected.
I have rtlsdr version 1.4.

It's not clear exactly how you installed your plugin....
To be consistent and for ease of use, I always run "make package" and install the resulting .deb package.

Bottom line....update your system and try again!

Thomas

Thanks. So I finally found the log file, moved the plugin to the correct location, and this is the error I get:

14:07:42.290 MESSAGE pluginmanager.cpp:1145 Checking plugin candidate: /home/ubuntu/.local/lib/opencpn/librtlsdr_pi.so
14:07:42.466 MESSAGE pluginmanager.cpp:2098 Plugin is compatible: false


16:31:31.201 MESSAGE pluginmanager.cpp:1145 Checking plugin candidate: /home/ubuntu/.local/lib/opencpn/librtlsdr_pi.so
16:31:31.201 MESSAGE pluginmanager.cpp:1193 Skipping not enabled candidate.

I have the latest PPA download of OpenCPN.. So I figured trying downloading the master from github. 'cmake ..' worked, but make gave this error:

[/home/ubuntu/Downloads/OpenCPN-master/src/glChartCanvas.cpp:318:36: error: ‘glXGetProcAddress’ was not declared in this scope
#define systemGetProcAddress(ADDR) glXGetProcAddress((const GLubyte*)ADDR)
^
/home/ubuntu/Downloads/OpenCPN-master/src/glChartCanvas.cpp:318:36: note: in definition of macro ‘systemGetProcAddress’
#define systemGetProcAddress(ADDR) glXGetProcAddress((const GLubyte*)ADDR)
^~~~~~~~~~~~~~~~~
/home/ubuntu/Downloads/OpenCPN-master/src/glChartCanvas.cpp:318:36: note: suggested alternative: ‘ocpnGetProcAddress’
#define systemGetProcAddress(ADDR) glXGetProcAddress((const GLubyte*)ADDR)
^
/home/ubuntu/Downloads/OpenCPN-master/src/glChartCanvas.cpp:318:36: note: in definition of macro ‘systemGetProcAddress’
#define systemGetProcAddress(ADDR) glXGetProcAddress((const GLubyte*)ADDR)
^~~~~~~~~~~~~~~~~
CMakeFiles/opencpn.dir/build.make:2873: recipe for target 'CMakeFiles/opencpn.dir/src/glChartCanvas.cpp.o' failed
make[2]: *** [CMakeFiles/opencpn.dir/src/glChartCanvas.cpp.o] Error 1
make[2]: Leaving directory '/home/ubuntu/Downloads/OpenCPN-master/build'
CMakeFiles/Makefile2:191: recipe for target 'CMakeFiles/opencpn.dir/all' failed
make[1]: *** [CMakeFiles/opencpn.dir/all] Error 2
make[1]: Leaving directory '/home/ubuntu/Downloads/OpenCPN-master/build'
Makefile:154: recipe for target 'all' failed
make: *** [all] Error 2

[CarCode]

Originally Posted by Eublem
I cant find the log file anywhere...?

Originally Posted by CarCode
What about RTFM?

Originally Posted by Eublem

When I say anywhere, I mean literally anywhere.
The manual says the file is within the home directory, but thats not the case for me:

Please try to read the manual.
This is from the manual:

[Eublem]

Originally Posted by CarCode

Please try to read the manual.
This is from the manual:

Thanks CarCode. I finally located the log file and posted parts of it above.