Describe libjsoncpp linkage issue

patrick96 2018-02-02 08:36:04 +01:00
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This page lists some of the issues one can encounter when using polybar. Either quirks in polybar's behaviour or actual bugs we haven't been able to fix yet.
# Contents
- [Error While Loading Shared Libraries: libjsoncpp](#error-while-loading-shared-libraries-libjsoncpp)
- [Setting Module Backgrounds when using Gradients](#setting-module-backgrounds-when-using-gradients)
## Error While Loading Shared Libraries: libjsoncpp
**Problem:** When you update the `jsoncpp` package, you might get the following error, when trying to run polybar:
```
polybar: error while loading shared libraries: libjsoncpp.so.XX: cannot open shared object file: No such file or directory
```
This issue occurs because `jsoncpp` changes the name of their `.so` file every release and there really isn't anything we can do about that.
**Fix:** You have to recompile polybar, so that it links to the new `.so` file. If you use precompiled binaries from a repository, you either have to compile polybar yourself or contact the packager so that they can recompile polybar and publish a package with proper linkage. Alternatively you can symlink the `libjsoncpp.so.XX` file from the error message to `libjsoncpp.so` (most likely in the `/usr/lib` directory).
## Setting Module Backgrounds when using Gradients
**Problem:** When you use a gradient as your polybar background, explicitly setting any module's background color to whatever you have set as `background-0`, either through the `-background` setting or the `%{B}` formatting tag, will not change the background color at all.