Qt5: fix plugin installation

cockatrice/CMakeLists.txt

@@ -201,10 +201,13 @@ if(Qt5Widgets_FOUND)
         list(APPEND COCKATRICE_LIBS LinguistTools)
     endif()
 
-    # Let cmake chew Qt4's translations and resource files
+    # Let cmake chew Qt5's translations and resource files
     # Note: header files are MOC-ed automatically by cmake
     QT5_ADD_TRANSLATION(cockatrice_QM ${cockatrice_TS})
     QT5_ADD_RESOURCES(cockatrice_RESOURCES_RCC ${cockatrice_RESOURCES})
+
+    # guess plugins directory
+    set(QT_PLUGINS_DIR "${Qt5Widgets_DIR}/../../../plugins")
 endif()
 
 # Declare path variables

oracle/CMakeLists.txt

@@ -63,6 +63,9 @@ if(Qt5Widgets_FOUND)
         include_directories(${Qt5Svg_INCLUDE_DIRS})
         list(APPEND ORACLE_LIBS Svg)
     endif()
+
+    # guess plugins directory
+    set(QT_PLUGINS_DIR "${Qt5Widgets_DIR}/../../../plugins")
 endif()
 
 INCLUDE_DIRECTORIES(../cockatrice/src)

servatrice/CMakeLists.txt

@@ -51,6 +51,9 @@ if(Qt5Widgets_FOUND)
         include_directories(${Qt5Sql_INCLUDE_DIRS})
         list(APPEND SERVATRICE_LIBS Sql)
     endif()
+
+    # guess plugins directory
+    set(QT_PLUGINS_DIR "${Qt5Widgets_DIR}/../../../plugins")
 endif()
 
 SET(QT_DONT_USE_QTGUI TRUE)