[Buildroot] [Bug 11401] New: Impossible do build a qt program using kf5-networkmanager-qt

[Buildroot] [Bug 11401] New: Impossible do build a qt program using kf5-networkmanager-qt

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

            Bug ID: 11401
           Summary: Impossible do build a qt program using
                    kf5-networkmanager-qt
           Product: buildroot
           Version: unspecified
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: Other
          Assignee: unassigned at buildroot.uclibc.org
          Reporter: carrier.nicolas0 at gmail.com
                CC: buildroot at uclibc.org
  Target Milestone: ---

When trying to build a minimal c++ code, making use of the
kf5-networkmanager-qt library, I obtain the following error:

    Project ERROR: Unknown module(s) in QT: NetworkManagerQt

There is a .pri file installed here:

    output/target/usr/mkspecs/modules/qt_NetworkManagerQt.pri

Which doesn't seem to be taken into account. When cp-ed alongsidef the qt .pri
files:

    cp ../output/target/usr/mkspecs/modules/qt_NetworkManagerQt.pri
../output/host/mkspecs/modules/

The build fails this time with the following error:

    i686-buildroot-linux-gnu-g++: ERROR: unsafe header/library path used in
cross-compilation: '-I/usr/include/KF5/NetworkManagerQt'

Which seems to indicate that either the pri file isn't used properly or that
its content is buggy.

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

--- Comment #1 from Nicolas Carrier <carrier.nicolas0@gmail.com> ---
Created attachment 7816
  --> https://bugs.busybox.net/attachment.cgi?id=7816&action=edit
The example qt network manager application

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

--- Comment #2 from Nicolas Carrier <carrier.nicolas0@gmail.com> ---
Note: I'm originally using a custom buildroot version on top of the 2018.02.5,
but I could reproduce the issue with the current master
0769f7fc4b3e47e05c9a7951aefa81a2dbaeab0d

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

--- Comment #3 from Nicolas Carrier <carrier.nicolas0@gmail.com> ---
Created attachment 7821
  --> https://bugs.busybox.net/attachment.cgi?id=7821&action=edit
The default config used to reproduce the bug with the minimal example.

The issue originally occurred with another buildroot workspace, for a real
arm-based product.
The provided defconfig is the simplest I could make, to reproduce the issue in
a minimal buildroot environment.

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

--- Comment #4 from Pierre Ducroquet <pinaraf@pinaraf.info> ---
I will try to investigate tomorrow. I did not test with a QMake project, only
with a CMake one. Could you try converting from qmake to cmake ?
The CMakeLists.txt would look like this:

cmake_minimum_required(VERSION 3.0)

find_package(Qt5 REQUIRED COMPONENTS Gui DBus)
find_package(KF5NetworkManagerQt REQUIRED)
add_executable(qt-network-manager main.cpp)
target_link_libraries(qt-network-manager Qt5::Gui Qt5::DBus
KF5::NetworkManagerQt)

This would help confirm the issue lies in the QMake files.

Thank you very much for your report

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

--- Comment #5 from Nicolas Carrier <carrier.nicolas0@gmail.com> ---
I'm going to try to convert the project to cmake.

For now, the following .pro file

QT -= gui                                                                       
QT += dbus network                                                              
CONFIG += c++11 console link_pkgconfig                                          
PKGCONFIG += libnm                                                              
SOURCES += main.cpp                                                             
INCLUDEPATH = $$[QT_SYSROOT]/usr/include/KF5/NetworkManagerQt                   
LIBS += -lKF5NetworkManagerQt                                                   
target.path = /                                                                 
!isEmpty(target.path): INSTALLS += target                                       

allowed me to build (and run) both for desktop and in buildroot. So this proves
at least that the result of the kf5-networkmanager-qt build works fine.

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

--- Comment #6 from Nicolas Carrier <carrier.nicolas0@gmail.com> ---
With the following CMakeLists.txt:

cmake_minimum_required(VERSION 3.0)
include(GNUInstallDirs)
find_package(Qt5 REQUIRED COMPONENTS Gui DBus Network)
find_package(KF5NetworkManagerQt REQUIRED)
add_executable(qt-network-manager main.cpp)
target_link_libraries(qt-network-manager Qt5::Gui Qt5::DBus
KF5::NetworkManagerQt)
install(TARGETS qt-network-manager DESTINATION ${CMAKE_INSTALL_BINDIR})

and test-qt-networkmanager.mk:

TEST_QT_NETWORKMANAGER_VERSION = 0.0.1
TEST_QT_NETWORKMANAGER_SITE_METHOD = local
TEST_QT_NETWORKMANAGER_SITE =
$(BR2_EXTERNAL_SPECTRACOM_PATH)/../test-qt-networkmanager-src
TEST_QT_NETWORKMANAGER_DEPENDENCIES = kf5-networkmanager-qt
$(eval $(cmake-package))

It builds fine.

I can't use the cmake solution though, because I need to use NetworkManagerQt
is an already existing and quite complex, qmake-based project, which I'd like
to avoid converting to cmake if possible.

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

Pierre Ducroquet <pinaraf@pinaraf.info> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

--- Comment #7 from Pierre Ducroquet <pinaraf@pinaraf.info> ---
Thank you for testing.
My message was not to imply you had to convert your project to CMake, I'm well
too aware of the difficulty of such a task. It was just to make sure we
identified the proper error.

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt with qmake

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

Pierre Ducroquet <pinaraf@pinaraf.info> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Impossible do build a qt    |Impossible do build a qt
                   |program using               |program using
                   |kf5-networkmanager-qt       |kf5-networkmanager-qt with
                   |                            |qmake

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt with qmake

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

--- Comment #8 from Nicolas Carrier <carrier.nicolas0@gmail.com> ---
Sure, no problem, and in the meantime, I have to consider all the solutions.

I'd really like to propose a patch directly, but I don't have a sufficient
knowledge in qmake.

I noticed that qt_lib_network.pri has its QT.network.includes variable
parametered with $$QT_MODULE_INCLUDE_BASE, when for NetworkManagerQt, it's
just:

QT.NetworkManagerQt.includes = /usr/include/KF5/NetworkManagerQt

Maybe something analogous should be done. But how ? As a buildroot patch ?

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt with qmake

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

--- Comment #9 from Pierre Ducroquet <pinaraf@pinaraf.info> ---
I'm looking into it. I can not promise any timeline, but I sure hope to have a
patch for you during the day.

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt with qmake

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

--- Comment #10 from Nicolas Carrier <carrier.nicolas0@gmail.com> ---
Excellent, there's no hurry, thank you very much !

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt with qmake

[bugzilla at busybox.net]

https://bugs.busybox.net/show_bug.cgi?id=11401

--- Comment #11 from Pierre Ducroquet <pinaraf@pinaraf.info> ---
After analysis and some checks (thanks Nicolas for your availability on IRC) it
looks like there are two issues:
- a bug in extra-cmake-modules that generates invalid pri when cross-building
- wrong cmake settings on my side, thus putting files in wrong places

I am still working on it and confident a solution will be found by tomorrow.

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[Buildroot] [Bug 11401] Impossible do build a qt program using kf5-networkmanager-qt with qmake

[bugzilla]

https://bugs.busybox.net/show_bug.cgi?id=11401

Yann E. MORIN <yann.morin.1998@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |yann.morin.1998@free.fr
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |MOVED

--- Comment #12 from Yann E. MORIN <yann.morin.1998@free.fr> ---
Thank you for your report.

The issue tracker for the Buildroot project has been moved to
the Gitlab.com issue tracker:
    https://gitlab.com/buildroot.org/buildroot/-/issues

We are taking this opportunity to close old issues in this old
tracker. If you believe your issue is still relevant, please
open one in the new issue tracker.

Thank you!

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