[solved]CMake cannot find QT5

GGILOYAN

Hi

I whant to build OSG with QT5.
With qt4 it works fine but with QT5 I get the following message from CMake

CMake Warning at C:/Program Files (x86)/CMake/share/cmake-3.0/Modules/FindQt4.cmake:616 (message):
c:/Qt/Qt5.3.0/5.3/msvc2013_opengl/bin/qmake.exe reported QT_INSTALL_LIBS as
"C:/Qt/Qt5.3.0/5.3/msvc2013_opengl/lib" but QtCore could not be found
there. Qt is NOT installed correctly for the target build environment.

Please advise

SGaist

Hi,

Can you show the Qt 5 part of your CMakeList.txt ? Also, do you have e.g. Qt5CoreConfig.cmake in your installation somewhere ?

GGILOYAN

Hi

There is not Qt5CoreConfig.cmake file in my installation somewhere.

This is the part where tryed to find qt

Include macro utilities here

@INCLUDE(OsgMacroUtils)

OPTION(OSG_USE_QT "Enable to use Qt (build Qt-dependent libraries, plugins and examples)" ON)

IF(OSG_USE_QT AND NOT ANDROID)

To select a specific version of QT define DESIRED_QT_VERSION

via cmake -DDESIRED_QT_VERSION=5

QUIET option disables messages if the package cannot be found.

IF  (DESIRED_QT_VERSION)
    IF  (DESIRED_QT_VERSION MATCHES 5)
          FIND_PACKAGE(Qt5Widgets)
    ELSEIF (DESIRED_QT_VERSION MATCHES 4)
          FIND_PACKAGE(Qt4)
    ELSE()
          FIND_PACKAGE(Qt3)
    ENDIF()

ELSE()

    FIND_PACKAGE(Qt5Widgets QUIET)

    IF ( Qt5Widgets_FOUND )
        # CMake 2.8.8 or greater required
        BUILDER_VERSION_GREATER(2 8 7)
        IF(NOT VALID_BUILDER_VERSION)
            MESSAGE(
            SEND_ERROR
            "Qt5 requires CMake version 2.8.8 or greater!\n"
            "Update CMake or set DESIRED_QT_VERSION to less than 5
            or disable OSG_USE_QT."
            )
        ENDIF( )
    ENDIF( )

    IF ( NOT Qt5Widgets_FOUND )
        FIND_PACKAGE(Qt4)

        IF (NOT QT4_FOUND)
            FIND_PACKAGE(Qt3)
        ENDIF()
    ENDIF()
ENDIF()

#If we have found Qt5, let's try to top off by getting the webkit as well
IF ( Qt5Widgets_FOUND )
    FIND_PACKAGE(Qt5WebKitWidgets QUIET)
ENDIF()

ENDIF()@

SGaist

Do you have any cmake related file in your Qt installation ?

GGILOYAN

What do you mean exactly ?
Before I built other project with Qt4. That's all

SGaist

I meant:

check if C:/Qt/Qt5.3.0/5.3/msvc2013_opengl/ contains anything cmake related

GGILOYAN

I have solved the problem writing this

@set(CMAKE_PREFIX_PATH "C:\Qt\Qt5.3.0\5.3\msvc2013_opengl" CACHE PATH "")
set(CMAKE_LIBRARY_PATH "C:\Program Files (x86)\Windows Kits\8.0\Lib\win8\um\x86")
set(Qt5Widgets_DIR "c:\Qt\Qt5.3.0\5.3\msvc2013_opengl\lib\cmake\Qt5Widgets\")@

Thanks

SGaist

You're welcome !

Since you have it finding Qt 5 now, please update the thread title prepending [solved] so other forum users may know a solution has been found :)