Keep it as a compiler, but also add it as a target

plugins/plugins.pri

@@ -10,7 +10,10 @@ LIBS += -L../../libnymea -lnymea
 HEADERS += plugininfo.h
 
 # Create plugininfo file
-plugininfo.target = plugininfo
+JSONFILE=$$PWD/$$TARGET/deviceplugin"$$TARGET".json
+plugininfo.input = JSONFILE
+plugininfo.output = plugininfo.h
+plugininfo.CONFIG = no_link target_predeps
 plugininfo.commands = $$top_srcdir/plugins/nymea-generateplugininfo \
                             --filetype i \
                             --jsonfile $$PWD/$$TARGET/deviceplugin"$$TARGET".json \
@@ -21,10 +24,11 @@ plugininfo.commands = $$top_srcdir/plugins/nymea-generateplugininfo \
                             --jsonfile $$PWD/$$TARGET/deviceplugin"$$TARGET".json \
                             --output extern-plugininfo.h \
                             --builddir $$OUT_PWD;
+# Add it as a compiler, so it will be called before building like moc
+QMAKE_EXTRA_COMPILERS += plugininfo
+# But also add it as a target so we can add it separately without building. E.g. for updating translations.
 QMAKE_EXTRA_TARGETS += plugininfo
 
-PRE_TARGETDEPS += plugininfo
-
 # Install plugin
 target.path = $$[QT_INSTALL_LIBS]/nymea/plugins/
 INSTALLS += target