[cmake-developers] Remaining issues around umbrella Config files?

[Stephen Kelly]

Hi,

I have this pending patch:

 https://codereview.qt-project.org/#change,44532

Given 

 find_package(Qt5 COMPONENTS          Widgets
                              # I don't have QtQuick installed.
                  OPTIONAL_COMPONENTS Svg Quick 
 )

 message("Qt5_FOUND: ${Qt5_FOUND}")
 message("Qt5Gui_FOUND: ${Qt5Gui_FOUND}")
 message("Qt5Widgets_FOUND: ${Qt5Widgets_FOUND}")
 message("Qt5Svg_FOUND: ${Qt5Svg_FOUND}")
 message("Qt5Quick_FOUND: ${Qt5Quick_FOUND}")

the output is 

 $ cmake ..
 CMake Warning at 
/home/stephen/dev/prefix/qtbase/lib/cmake/Qt5/Qt5Config.cmake:24 
(find_package):
   Could not find a package configuration file provided by "Qt5Quick" with 
any
   of the following names:

     Qt5QuickConfig.cmake
     qt5quick-config.cmake

   Add the installation prefix of "Qt5Quick" to CMAKE_PREFIX_PATH or set
   "Qt5Quick_DIR" to a directory containing one of the above files.  If
   "Qt5Quick" provides a separate development package or SDK, be sure it has
   been installed.
 Call Stack (most recent call first):
   CMakeLists.txt:62 (find_package)


 Qt5_FOUND: 1
 Qt5Gui_FOUND: 1
 Qt5Widgets_FOUND: 1
 Qt5Svg_FOUND: 1
 Qt5Quick_FOUND: 0
 -- Configuring done
 -- Generating done
 -- Build files have been written to: 
/home/stephen/dev/src/playground/cmake/build


Given:

 find_package(Qt5 COMPONENTS Widgets Quick)

 message("Qt5_FOUND: ${Qt5_FOUND}")
 message("Qt5Gui_FOUND: ${Qt5Gui_FOUND}")
 message("Qt5Widgets_FOUND: ${Qt5Widgets_FOUND}")
 message("Qt5Quick_FOUND: ${Qt5Quick_FOUND}")

The output is:

 CMake Warning at 
/home/stephen/dev/prefix/qtbase/lib/cmake/Qt5/Qt5Config.cmake:24 
(find_package):
   Could not find a package configuration file provided by "Qt5Quick" with 
any
   of the following names:

     Qt5QuickConfig.cmake
     qt5quick-config.cmake

   Add the installation prefix of "Qt5Quick" to CMAKE_PREFIX_PATH or set
   "Qt5Quick_DIR" to a directory containing one of the above files.  If
   "Qt5Quick" provides a separate development package or SDK, be sure it has
   been installed.
 Call Stack (most recent call first):
   CMakeLists.txt:62 (find_package)


 CMake Warning at CMakeLists.txt:62 (find_package):
   Found package configuration file:

     /home/stephen/dev/prefix/qtbase/lib/cmake/Qt5/Qt5Config.cmake

   but it set Qt5_FOUND to FALSE so package "Qt5" is considered to be NOT
   FOUND.  Reason given by package:

   Failed to find module "Qt5Quick" in prefix
   "/home/stephen/dev/prefix/qtbase"



 Qt5_FOUND: 0
 Qt5Gui_FOUND: 1
 Qt5Widgets_FOUND: 1
 Qt5Svg_FOUND:
 Qt5Quick_FOUND: 0
 -- Configuring done
 -- Generating done
 -- Build files have been written to: 
/home/stephen/dev/src/playground/cmake/build


I didn't closely follow the threads around this. Is there any other behavior 
that I should account for here?

Thanks,

Steve.