[KDE/Mac] Review Request 124824: [OS X] FindKDE4Internal.cmake : reintroduce a cmake_minimum_required statement

[Luigi Toscano]

> On Ago. 19, 2015, 8:06 p.m., Stephen Kelly wrote:
> > This patch is not correct. 
> > 
> > What repo were you trying to build? Add cmake_minimum_required(VERSION 2.8.9) there.
> 
> Stephen Kelly wrote:
>     Why did this review go quiet? Did you pull and realize that line was already there in whatever repo you're looking at?
> 
> René J.V. Bertin wrote:
>     What, my 2 replies below aren't sufficient? :) If you missed them, that'd probably support of my idea that most KDE devs are focussed away from flogging dead horses (i.e., KDE4 code, to quote one of those devs, a rather "visible" one I won't name).
>     
>     No, I didn't pull whatever repo after pulling the 4.14 branch head of one of the KDE PIM components and bumping into this error.

David Faure, durink Akademy, was rebuilding the last kdelibs4 branch for most applications, I think to ensure that the changes in the default cmake policy did not break them.
He did various fixes, so I think that fixing this in the proper way (which I can't help to, sorry) would be good.


- Luigi


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On Ago. 19, 2015, 7:41 p.m., René J.V. Bertin wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://git.reviewboard.kde.org/r/124824/
> -----------------------------------------------------------
> 
> (Updated Ago. 19, 2015, 7:41 p.m.)
> 
> 
> Review request for KDE Software on Mac OS X and kdelibs.
> 
> 
> Repository: kdelibs
> 
> 
> Description
> -------
> 
> The recent removal of the code block from FindKDE4Internal.cmake starting with the `cmake_minimum_required` statement breaks configuring on OS X:
> 
> ```
> -- The C compiler identification is AppleClang 6.0.0.6000057
> -- The CXX compiler identification is AppleClang 6.0.0.6000057
> -- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
> -- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -- works
> -- Detecting C compiler ABI info
> -- Detecting C compiler ABI info - done
> -- Detecting C compile features
> -- Detecting C compile features - done
> -- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++
> -- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -- works
> -- Detecting CXX compiler ABI info
> -- Detecting CXX compiler ABI info - done
> -- Detecting CXX compile features
> -- Detecting CXX compile features - done
> -- Looking for Q_WS_X11
> -- Looking for Q_WS_X11 - not found
> -- Looking for Q_WS_WIN
> -- Looking for Q_WS_WIN - not found
> -- Looking for Q_WS_QWS
> -- Looking for Q_WS_QWS - not found
> -- Looking for Q_WS_MAC
> -- Looking for Q_WS_MAC - found
> -- Looking for QT_MAC_USE_COCOA
> -- Looking for QT_MAC_USE_COCOA - found
> -- Found Qt-Version 4.8.7 (using /opt/local/libexec/qt4/bin/qmake)
> -- Looking for include file pthread.h
> -- Looking for include file pthread.h - found
> -- Looking for pthread_create
> -- Looking for pthread_create - found
> -- Found Threads: TRUE  
> CMake Error at /opt/local/share/cmake-3.2/Modules/FindPkgConfig.cmake:112 (elseif):
>   given arguments:
> 
>     "VERSION_LESS" "3.1"
> 
>   Unknown arguments specified
> Call Stack (most recent call first):
>   /opt/local/share/cmake-3.2/Modules/FindPkgConfig.cmake:501 (_pkgconfig_parse_options)
>   /opt/local/share/cmake-3.2/Modules/FindOpenSSL.cmake:43 (pkg_check_modules)
>   /opt/local/share/apps/cmake/modules/Qt4ConfigDependentSettings.cmake:224 (FIND_PACKAGE)
>   /opt/local/share/apps/cmake/modules/FindQt4.cmake:1207 (INCLUDE)
>   /opt/local/share/apps/cmake/modules/FindKDE4Internal.cmake:425 (find_package)
>   /opt/local/share/cmake-3.2/Modules/FindKDE4.cmake:108 (find_package)
>   CMakeLists.txt:4 (find_package)
> 
> 
> -- Configuring incomplete, errors occurred!
> ```
> 
> The attached patch is the minimum reintroduction of the removed code that allows the cmake procedure to conclude successfully.
> 
> CMake experts might be aware of other ways to address this issue more in line with the reason the block was removed.
> 
> 
> Diffs
> -----
> 
>   cmake/modules/FindKDE4Internal.cmake 7d54b9b 
> 
> Diff: https://git.reviewboard.kde.org/r/124824/diff/
> 
> 
> Testing
> -------
> 
> On OS X 10.9.5 with KDELibs 4.14.11 (v4.14.10-20-g150d983) and CMake 3.2.2 .
> 
> The unmodified code from v4.14.10-20-g150d983 is fine on Linux with cmake 3.0.1 .
> 
> 
> Thanks,
> 
> René J.V. Bertin
> 
>

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