diff -Nrup a/minitube.pro b/minitube.pro --- a/minitube.pro 2019-06-14 17:51:20.000000000 +0200 +++ b/minitube.pro 2019-06-15 08:12:01.932623278 +0200 @@ -33,7 +33,11 @@ include(lib/idle/idle.pri) DEFINES += MEDIA_MPV include(lib/media/media.pri) +isEmpty(USE_SYSTEM_QTSINGLEAPPLICATION){ include(src/qtsingleapplication/qtsingleapplication.pri) +} else { + CONFIG += qtsingleapplication +} HEADERS += src/video.h \ src/spacer.h \