add patch from Gentoo packager to fix cmake issue (reported on Arch, too). ref #49

src/gui/CMakeLists.txt

@@ -22,7 +22,7 @@ add_executable (barrier WIN32
 
 include_directories (./src)
 
-qt5_use_modules (barrier Core Widgets Network)
+target_link_libraries (barrier Qt5::Core Qt5::Widgets Qt5::Network)
 target_compile_definitions (barrier PRIVATE -DBARRIER_VERSION_STAGE="${BARRIER_VERSION_STAGE}")
 target_compile_definitions (barrier PRIVATE -DBARRIER_REVISION="${BARRIER_REVISION}")
 

src/gui/src/ActionDialog.cpp

@@ -25,6 +25,7 @@
 
 #include <QtCore>
 #include <QtGui>
+#include <QButtonGroup>
 
 ActionDialog::ActionDialog(QWidget* parent, ServerConfig& config, Hotkey& hotkey, Action& action) :
     QDialog(parent, Qt::WindowTitleHint | Qt::WindowSystemMenuHint),

src/gui/src/ScreenSetupView.cpp

@@ -22,6 +22,7 @@
 
 #include <QtCore>
 #include <QtGui>
+#include <QHeaderView>
 
 ScreenSetupView::ScreenSetupView(QWidget* parent) :
     QTableView(parent)