failed to cross compile opencv with qt5
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I want to cross compile opencv for aarch64 with qt5. And I add "-DWITH_QT=ON " to cmake.
`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:791 (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:791 (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:791 (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:791 (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:791 (include)CMake Error at /usr/share/cmake-3.5/Modules/FindQt4.cmake:1326 (message):
Found unsuitable Qt version "5.5.1" from /usr/bin/qmake, this code requires
Qt 4.x
Call Stack (most recent call first):
cmake/OpenCVFindLibsGUI.cmake:34 (find_package)
CMakeLists.txt:791 (include)-- Configuring incomplete, errors occurred!
`I know the reason is that my compute does not have the aarch64-linux-gnu/cmake/Qt5Core , Qt5Concurrent and so on.
My compute has install the qt5 for x86_64. So when I compile opencv for my own linux(x86_64)，it is OK. But when I cross compile for aarch64 in my compute(x86_64)，it doesn't work.
Of course when cmake without "-DWITH_QT=ON", it work.While the arm opencv can not use imshow() function.
what should I do？ -
Hi and welcome to devnet,
If you can't get one pre-built, then you first have to cross-compile Qt for your target architecture.
