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Type: Bug
Resolution: Done
Priority: P1: Critical
Fix Version/s: 5.15.3, 5.15.6
Affects Version/s: 5.15.1, 5.15.2
Component/s: Build System: CMake
Labels:
None

Platform/s:

Android
Commits:
265d48f688b4169e60055b15702a90eb54262298 (qt/tqtc-qtbase/5.15)

I'm trying to build my project, which consists of an app and a few libraries, for Android. I'm building with CMake, there's no qmake nor QtCreator.

I get the following error at configure time:

CMake Error at C:/dev/qt/5.15.1/android/lib/cmake/Qt5Core/Qt5AndroidSupport.cmake:126 (add_custom_target):
  add_custom_target cannot create target "apk" because another target with
  the same name already exists.  The existing target is a custom target
  created in source directory "my-project".  See
  documentation for policy CMP0002 for more details.
Call Stack (most recent call first):
  C:/dev/qt/5.15.1/android/lib/cmake/Qt5Core/Qt5CoreConfigExtras.cmake:94 (include)
  C:/dev/qt/5.15.1/android/lib/cmake/Qt5Core/Qt5CoreConfig.cmake:232 (include)
  my-project/CMakeLists.txt:28 (find_package)

It seems that Qt5AndroidSupport.cmake creates two custom CMake targets ("apk" and "aab") whenever it is included by a call to find_package(Qt). Therefore, multiple calls to find_package(Qt) produce this error, as it tries to create the "apk" and "aab" targets multiple times.

All this was previously working with Qt 5.13.1.