Qt creator opencv windows cmake error
I want to customize and then generate an opencv library for the qt creator to link them. I opened cmake 3.1.0 and typed in source and build path.
Source:
C:/Users/Philipp_Laptop/Downloads/opencv/sources
build: C:/opencv-mingw
Then I configured the mingw compiler with the path:
C:/Qt/Tools/mingw482_32/bin/gcc.exe
C:/Qt/Tools/mingw482_32/bin/g++.exe
After successful configuration, I set the with_Qt parameter. I configured it twice and it shows me the following error:
Detected version of GNU GCC: 48 (408)
CMake Warning (dev) at cmake/OpenCVUtils.cmake:261 (if):
Policy CMP0054 is not set: Only interpret if() arguments as variables or
keywords when unquoted. Run "cmake --help-policy CMP0054" for policy
details. Use the cmake_policy command to set the policy and suppress this
warning.
Quoted variables like "WIN32" will no longer be dereferenced when the
policy is set to NEW. Since the policy is not set the OLD behavior will be
used.
Call Stack (most recent call first):
CMakeLists.txt:127 (OCV_OPTION)
This warning is for project developers. Use -Wno-dev to suppress it.
CMake Warning at cmake/OpenCVFindLibsGUI.cmake:18 (find_package):
By not providing "FindQt5Core.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Qt5Core", but
CMake did not find one.
Could not find a package configuration file provided by "Qt5Core" with any
of the following names:
Qt5CoreConfig.cmake
qt5core-config.cmake
Add the installation prefix of "Qt5Core" to CMAKE_PREFIX_PATH or set
"Qt5Core_DIR" to a directory containing one of the above files. If
"Qt5Core" provides a separate development package or SDK, be sure it has
been installed.
Call Stack (most recent call first):
CMakeLists.txt:447 (include)
CMake Warning at cmake/OpenCVFindLibsGUI.cmake:19 (find_package):
By not providing "FindQt5Gui.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Qt5Gui", but
CMake did not find one.
Could not find a package configuration file provided by "Qt5Gui" with any
of the following names:
Qt5GuiConfig.cmake
qt5gui-config.cmake
Add the installation prefix of "Qt5Gui" to CMAKE_PREFIX_PATH or set
"Qt5Gui_DIR" to a directory containing one of the above files. If "Qt5Gui"
provides a separate development package or SDK, be sure it has been
installed.
Call Stack (most recent call first):
CMakeLists.txt:447 (include)
CMake Warning at cmake/OpenCVFindLibsGUI.cmake:20 (find_package):
By not providing "FindQt5Widgets.cmake" in CMAKE_MODULE_PATH this project
has asked CMake to find a package configuration file provided by
"Qt5Widgets", but CMake did not find one.
Could not find a package configuration file provided by "Qt5Widgets" with
any of the following names:
Qt5WidgetsConfig.cmake
qt5widgets-config.cmake
Add the installation prefix of "Qt5Widgets" to CMAKE_PREFIX_PATH or set
"Qt5Widgets_DIR" to a directory containing one of the above files. If
"Qt5Widgets" provides a separate development package or SDK, be sure it has
been installed.
Call Stack (most recent call first):
CMakeLists.txt:447 (include)
CMake Warning at cmake/OpenCVFindLibsGUI.cmake:21 (find_package):
By not providing "FindQt5Test.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Qt5Test", but
CMake did not find one.
Could not find a package configuration file provided by "Qt5Test" with any
of the following names:
Qt5TestConfig.cmake
qt5test-config.cmake
Add the installation prefix of "Qt5Test" to CMAKE_PREFIX_PATH or set
"Qt5Test_DIR" to a directory containing one of the above files. If
"Qt5Test" provides a separate development package or SDK, be sure it has
been installed.
Call Stack (most recent call first):
CMakeLists.txt:447 (include)
CMake Warning at cmake/OpenCVFindLibsGUI.cmake:22 (find_package):
By not providing "FindQt5Concurrent.cmake" in CMAKE_MODULE_PATH this
project has asked CMake to find a package configuration file provided by
"Qt5Concurrent", but CMake did not find one.
Could not find a package configuration file provided by "Qt5Concurrent"
with any of the following names:
Qt5ConcurrentConfig.cmake
qt5concurrent-config.cmake
Add the installation prefix of "Qt5Concurrent" to CMAKE_PREFIX_PATH or set
"Qt5Concurrent_DIR" to a directory containing one of the above files. If
"Qt5Concurrent" provides a separate development package or SDK, be sure it
has been installed.
Call Stack (most recent call first):
CMakeLists.txt:447 (include)
Looking for Q_WS_X11
Looking for Q_WS_X11 - not found
Looking for Q_WS_WIN
Looking for Q_WS_WIN - found
Looking for Q_WS_QWS
Looking for Q_WS_QWS - not found
Looking for Q_WS_MAC
Looking for Q_WS_MAC - not found
Found OpenGL: opengl32
CMake Error at C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindPackageHandleStandardArgs.cmake:138 (message):
Could NOT find Qt4 (missing: QT_MOC_EXECUTABLE QT_RCC_EXECUTABLE
QT_QTTEST_LIBRARY QT_UIC_EXECUTABLE) (found version "4.8.6")
Call Stack (most recent call first):
C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindPackageHandleStandardArgs.cmake:374 (_FPHSA_FAILURE_MESSAGE)
C:/Program Files (x86)/CMake/share/cmake-3.1/Modules/FindQt4.cmake:1331 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
cmake/OpenCVFindLibsGUI.cmake:34 (find_package)
CMakeLists.txt:447 (include)
Configuring incomplete, errors occurred!
See also "C:/opencv-mingw/CMakeFiles/CMakeOutput.log".
See also "C:/opencv-mingw/CMakeFiles/CMakeError.log".
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I used CMake GUI on Windows for this, so I will take this approach. Let's start with the problems associated with CMAKE_PREFIX_PATH not defined
. To solve this problem, you just need to click ADD on the CMAKE GUI and add a variable of type PATH with a name CMAKE_PREFIX_PATH
with a value C:/Bin/Qt/5.3/mingw482_32/lib/cmake/
, but using your own Qt5 installation. The directory you are pointing to now contains all the modules you need: Qt5 directory, Qt5AxBase ...
At this point, you press configure and you should be QT_QMAKE_EXECUTABLE
invalid. You have to install it correctly, in my case: C:/Bin/Qt/5.3/mingw482_32/bin/qmake.exe
.
Then click config again and see if any error is still present (you have other errors that I never saw, but maybe they are a consequence of previous ones), in my case this solved all problems and continued building.
The MINGW config seems fine: I tweaked it a bit, just placing the MINGW bean path in the PAT variable as the first entry and using the default compiler from CMAKE (but your solution is as correct as mine).
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