cmake and Qt private headers

SeeLook

Hi

I need to subclass QQuickFlickable which is placed in private headers,
so I'm trying to add proper statements to CMakeLists.txt
I found that qgammaray does it:
https://github.com/KDAB/GammaRay/blob/master/CMakeLists.txt

QQuickFlickable class is placed in:

/usr/include/qt/QtQuick/5.7.1/QtQuick/private/qquickflickable_p.h

So I'm adding:

if(NOT "${Qt5Qml_PRIVATE_INCLUDE_DIRS}" MATCHES "/QtQml/")
    string(REPLACE "/QtCore" "/QtQml" replaceme "${Qt5Core_PRIVATE_INCLUDE_DIRS}")
    list(APPEND Qt5Qml_PRIVATE_INCLUDE_DIRS ${replaceme})
    list(REMOVE_DUPLICATES Qt5Qml_PRIVATE_INCLUDE_DIRS)
endif()
if(NOT "${Qt5Quick_PRIVATE_INCLUDE_DIRS}" MATCHES "/QtQuick/")
    string(REPLACE "/QtCore" "/QtQuick" replaceme "${Qt5Core_PRIVATE_INCLUDE_DIRS}")
    list(APPEND Qt5Quick_PRIVATE_INCLUDE_DIRS ${Qt5Qml_PRIVATE_INCLUDE_DIRS})
    list(APPEND Qt5Quick_PRIVATE_INCLUDE_DIRS ${replaceme})
    list(REMOVE_DUPLICATES Qt5Quick_PRIVATE_INCLUDE_DIRS)
endif()

include_directories( ${Qt5Quick_INCLUDE_DIRS} )
include_directories( ${Qt5Quick_PRIVATE_INCLUDE_DIRS} )

and list of include directories of my CMakeLists.txt looks like:

get_property(dirs DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR} PROPERTY INCLUDE_DIRECTORIES)
foreach(dir ${dirs})
  message(STATUS "dir='${dir}'")
endforeach()

-- dir='/usr/include/qt'
-- dir='/usr/include/qt/QtQuick'
-- dir='/usr/include/qt/QtQml'
-- dir='/usr/include/qt/QtNetwork'
-- dir='/usr/include/qt/QtCore'
-- dir='/usr/lib/qt/mkspecs/linux-g++'
-- dir='/usr/include/qt/QtGui'
-- dir='/usr/include'
-- dir='/usr/include/qt/QtNetwork/5.7.1'
-- dir='/usr/include/qt/QtNetwork/5.7.1/QtNetwork'
-- dir='/usr/include/qt/QtCore/5.7.1'
-- dir='/usr/include/qt/QtCore/5.7.1/QtCore'
-- dir='/usr/include/qt/QtGui/5.7.1'
-- dir='/usr/include/qt/QtGui/5.7.1/QtGui'
-- dir='/usr/include/qt/QtQml/5.7.1'
-- dir='/usr/include/qt/QtQml/5.7.1/QtQml'
-- dir='/usr/include/qt/QtQuick/5.7.1'
-- dir='/usr/include/qt/QtQuick/5.7.1/QtQuick'

But if I include:

#include <private/qquickflickable_p.h>

It can not find private/qquickflickable_p.h
but when I include this way:

#define P_QQUICKFLICKABLE(major,minor,patch)  <QtQuick/major.minor.patch/QtQuick/private/qquickflickable_p.h>
#include P_QQUICKFLICKABLE(QT_VERSION_MAJOR, QT_VERSION_MINOR, QT_VERSION_PATCH)

It complains about missing private/qtquickglobal_p.h from qquickflickable_p.h
which is also in the same directory.

Please help how to manage it.

SeeLook

I give up... with using private headers.
I did above by wrapping my component with Flickable on QML side.

Anyway, it would find many practical purposes if QtQuick c++ classes will be not private.

mrjj

@SeeLook said in cmake and Qt private headers:

Anyway, it would find many practical purposes if QtQuick c++ classes will be not private.

Indeed but there is a good reason for it.
binary compatible.
https://community.kde.org/Policies/Binary_Compatibility_Examples

:)