Use directory property instead of variable to determine target existance.

This is more resilient to calling find_package in a scope such
as a function.

Change-Id: I17e69a416f4aed3102fa6195d239bcf4ce0b306b
Reviewed-by: Alexander Neundorf <neundorf@kde.org>
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>

diff --git a/mkspecs/cmake/Qt5BasicConfig.cmake.in b/mkspecs/cmake/Qt5BasicConfig.cmake.in
index 60024e5..a6e39b6 100644 (file)
--- a/mkspecs/cmake/Qt5BasicConfig.cmake.in
+++ b/mkspecs/cmake/Qt5BasicConfig.cmake.in
@@ -109,8 +109,9 @@ list(APPEND _Qt5Gui_LIB_DEPENDENCIES ${JPEG_LIBRARIES})
 
 !!ENDIF # Static
 
-if (NOT _Qt5$${CMAKE_MODULE_NAME}_target)
-    set(_Qt5$${CMAKE_MODULE_NAME}_target 1)
+get_property(_qt5$${CMAKE_MODULE_NAME}TargetExists DIRECTORY PROPERTY _Qt5$${CMAKE_MODULE_NAME}_target)
+if (NOT _qt5$${CMAKE_MODULE_NAME}TargetExists)
+    set_property(DIRECTORY PROPERTY _Qt5$${CMAKE_MODULE_NAME}_target TRUE)
 !!IF !isEmpty(CMAKE_STATIC_TYPE)
     add_library(Qt5::$${CMAKE_MODULE_NAME} STATIC IMPORTED)
 !!ELSE