[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.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[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

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[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

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[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.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[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

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[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.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[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.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[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.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[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

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[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 ?

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[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.

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[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 !

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[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.

-- 
You are receiving this mail because:
You are on the CC list for the bug.