CMake: Resource object for reading: Unknown error in using qt5_add_big_resources()

[sukmb]

I have been studying Qt build with CMake and would like to adopt it for my project requiring "CONFIG += resources_big" in the .pro.

To replace the resource_big, I found qt5_add_big_resources(), then tried using it in a minimal project.

However, I faced the following error. Are there any ideas to solve this problem or any workarounds?

D:\project\product\exercises\qt_cmake\hello\build>cmake --build .
Microsoft (R) Build Engine version 15.9.21+g9802d43bc3 for .NET Framework
Copyright (C) Microsoft Corporation. All rights reserved.

  Automatic MOC for target rcc_object_qml
  rcc_object_qml.vcxproj -> D:\project\product\exercises\qt_cmake\hello\build\r
  cc_object_qml.dir\Debug\rcc_object_qml.lib
  Automatic MOC for target hello
  Generating qrc_qml.o
  Unable to open temporary file D:/project/product/exercises/qt_cmake/hello/bui
  ld/qrc_qml.o for reading: Unknown error

C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\Common7\IDE\VC\VC
Targets\Microsoft.CppCommon.targets(209,5): error MSB6006: "cmd.exe" exited wit
h code 1. [D:\project\product\exercises\qt_cmake\hello\build\hello.vcxproj]

// FYI - project working directory - D:\project\product\exercises\qt_cmake

<Note>

• qt5_add_resources was working fine on the same environment.
• Here is my CMakeLists.txt of the minimal project - "hello". This was derived from Qt new Cmake project template "Qt Quick Application - Empty" and minor changes were incorporated there.

cmake_minimum_required(VERSION 3.13.0)
project(hello LANGUAGES CXX VERSION 0.0.1)

# Declare
if("$ENV{QTDIR}" STRGREATER "" OR DEFINED QTDIR)
  message(STATUS "Qt ENV found")
  set(QTDIR $ENV{QTDIR})
else()
  set(QTDIR "C:\\Qt\\5.12.3\\msvc2017")
  message(STATUS "ENV{QTDIR} not found instead set \"${QTDIR}\"")
endif()

set(CMAKE_PREFIX_PATH ${QTDIR})
set(CMAKE_INCLUDE_CURRENT_DIR ON)
set(CMAKE_AUTOMOC ON)
set(CMAKE_AUTORCC ON)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

# Qt
find_package(Qt5 COMPONENTS Core Quick REQUIRED)

# Executables
set(SOURCES main.cpp)
# qt5_add_resources(SOURCES qml.qrc) # No problems.
qt5_add_big_resources(SOURCES qml.qrc)
add_executable(${PROJECT_NAME} WIN32 ${SOURCES})

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

<Environment>

• Windows 7 Professional
• Qt - 5.12.3 (msvc2017)
• CMake - 3.14.5

[sukmb]

Hi, the latest 5.13.0 seems to fix up this issue. So closed.