add_custom_target cannot create target "aab" because another target with the same name already exists.

[Devoo]

Hi,

QtCreator cannot parse a complex solution using CMakeLists for Android.
This solution should create one executable file and one library, so file hierarchy looks like:

<ROOT_DIR>
<exec_DIR>
<lib_DIR>

Root CMakeLists:

cmake_minimum_required(VERSION 3.5)

project(nienazwany3 LANGUAGES CXX)

set(CMAKE_INCLUDE_CURRENT_DIR ON)

set(CMAKE_AUTOUIC ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

add_subdirectory(./src1)
add_subdirectory(./src2)

CMakeLists of executable file:

cmake_minimum_required(VERSION 3.5)
project(src1 LANGUAGES CXX)

find_package(Qt5 COMPONENTS Core Quick REQUIRED)

if(ANDROID)
    add_library(${PROJECT_NAME} SHARED
      src.cpp
    )
else()
    add_executable(${PROJECT_NAME}
      src.cpp
    )
endif()

target_compile_definitions(${PROJECT_NAME}
  PRIVATE $<$<OR:$<CONFIG:Debug>,$<CONFIG:RelWithDebInfo>>:QT_QML_DEBUG>)
target_link_libraries(${PROJECT_NAME}
  PRIVATE Qt5::Core Qt5::Quick)

CMakeLists of library file:

cmake_minimum_required(VERSION 3.5)
project(src2 LANGUAGES CXX)

find_package(Qt5 COMPONENTS Core Quick REQUIRED)

add_library(${PROJECT_NAME}
  src.cpp
)

target_compile_definitions(${PROJECT_NAME}
  PRIVATE $<$<OR:$<CONFIG:Debug>,$<CONFIG:RelWithDebInfo>>:QT_QML_DEBUG>)
target_link_libraries(${PROJECT_NAME}
  PRIVATE Qt5::Core Qt5::Quick)

QtCreator: 4.12.4
Qt: 5.15.0

Example project: https://gofile.io/d/GQG1tL

This example contains wrong source files - I just want QtCreator to parse this project, not compile it.
Any idea?