README.md: Document how to build the qt5 plugin

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Nirbheek Chauhan 2019-04-02 00:00:10 +05:30 committed by Nirbheek Chauhan
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@ -38,6 +38,17 @@ NOTE: on fedora (and maybe other distributions) replace `ninja` with `ninja-buil
# Development environment
## Building the Qt5 QML plugin
If `qmake` is not in `PATH` and pkgconfig files are not available, you can
point the `QMAKE` env var to the Qt5 installation of your choosing before
running `meson` as shown above.
The plugin will be automatically enabled if possible, but you can ensure that
it is built by passing `-Dgst-plugins-good:qt5=enabled` to `meson`. This will
cause Meson to error out if the plugin could not be enabled. This also works
for all plugins in all GStreamer repositories.
## Uninstalled environment
gst-build also contains a special `uninstalled` target that lets you enter an