gallery-app trunk FTBFS on trusty

[Olivier Tilloy]

Since a recent change somewhere in the trusty stack, gallery-app fails to build from source with the following error when running cmake:

    CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
    Missing variable is:
    QT_MOC_EXECUTABLE

CI jobs for gallery-app ran successfully until last Wednesday (2013-12-11), so the problem appeared sometime since then.

There hasn’t been any relevant change in gallery-app trunk since November, so the issue was introduced by a change somewhere else in the stack.

[Olivier Tilloy (osomon)]

Full cmake output (ran in an up-to-date amd64 trusty chroot):

-- The C compiler identification is GNU 4.8.2
-- The CXX compiler identification is GNU 4.8.2
-- Check for working C compiler: /usr/bin/x86_64-linux-gnu-gcc
-- Check for working C compiler: /usr/bin/x86_64-linux-gnu-gcc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/x86_64-linux-gnu-g++
-- Check for working CXX compiler: /usr/bin/x86_64-linux-gnu-g++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Could NOT find Lcov (missing: LCOV_EXECUTABLE GENHTML_EXECUTABLE)
-- Could NOT find gcovr (missing: GCOVR_EXECUTABLE)
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so
-- Looking for XOpenDisplay in /usr/lib/x86_64-linux-gnu/libX11.so;/usr/lib/x86_64-linux-gnu/libXext.so - found
-- Looking for gethostbyname
-- Looking for gethostbyname - found
-- Looking for connect
-- Looking for connect - found
-- Looking for remove
-- Looking for remove - found
-- Looking for shmat
-- Looking for shmat - found
-- Found X11: /usr/lib/x86_64-linux-gnu/libX11.so
-- Found OpenGL: /usr/lib/x86_64-linux-gnu/libGL.so
-- Found PkgConfig: /usr/bin/pkg-config (found version "0.26")
-- checking for module 'libcontent-hub'
-- found libcontent-hub, version 0.0.1
-- checking for module 'exiv2'
-- found exiv2, version 0.23
-- checking for module 'gstreamer-0.10'
-- found gstreamer-0.10, version 0.10.36
-- checking for module 'libmediainfo'
-- found libmediainfo, version 0.7.65
-- Found Gettext: /usr/bin/msgmerge (found version "0.18.3")
-- Autopilot tests disabled: autopilot binary not found
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
QT_MOC_EXECUTABLE
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
QT_MOC_EXECUTABLE
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
QT_MOC_EXECUTABLE
CMake Error: Error required internal CMake variable not set, cmake may be not be built correctly.
Missing variable is:
QT_MOC_EXECUTABLE
-- Configuring incomplete, errors occurred!

[Olivier Tilloy (osomon)]

The latest upload of cmake to the trusty archive is dated 2013-12-13, so it sounds likely that the issue was introduced with this new version of cmake.

[Olivier Tilloy (osomon)]

According to cmake’s documentation, it seems QT_MOC_EXECUTABLE is a Qt3/Qt4 specific variable, not set when compiling against Qt5.

[Olivier Tilloy (osomon)]

Link to the latest version of the cmake source package in trusty: https://launchpad.net/ubuntu/+source/cmake/2.8.12.1-1ubuntu2

[Olivier Tilloy (osomon)]

Looks like the problem comes from the use of the QT_WRAP_CPP macro in some unittests’ CMakeLists.

[Launchpad Janitor (janitor)]

This bug was fixed in the package gallery-app - 0.0.67+14.04.20131217-0ubuntu1

---------------
gallery-app (0.0.67+14.04.20131217-0ubuntu1) trusty; urgency=low

  [ Omer Akram ]
  * Changes the color of the delete dialog's cancel button. (LP:
    #1207399)

  [ Dmitrijs Ledkovs ]
  * Remove gstreamer0.10-ffmpeg dependency. (LP: #1254033). (LP:
    #1254033)

  [ Olivier Tilloy ]
  * Use QT5_WRAP_CPP instead of QT_WRAP_CPP. Fixes building from source
    on an up-to-date trusty setup. (LP: #1261417)
  * Fix a flaky test by always waiting for the confirmation dialogue to
    be fully visible before interacting with it.

  [ Ubuntu daily release ]
  * Automatic snapshot from revision 892
 -- Ubuntu daily release <email address hidden> Tue, 17 Dec 2013 18:52:44 +0000