On Wednesday 24 November 2010, David Cole wrote: > On Wed, Nov 24, 2010 at 11:34 AM, Rolf Eike Beer <e...@sf-mail.de> wrote: > >> On Wed, Nov 24, 2010 at 6:57 AM, Rolf Eike Beer <e...@sf-mail.de> wrote: > >>>> In KDE we have a macro MACRO_WRITE_BASIC_CMAKE_VERSION_FILE() which > >>>> helps > >>>> with > >>>> creating a basic version-info file which should be installed along > >>>> with the > >>>> Config-file. > >>>> It consists of MacroWriteBasicCMakeVersionFile.cmake and > >>>> BasicFindPackageVersion.cmake.in which you can find in > >>>> http://websvn.kde.org/trunk/KDE/kdelibs/cmake/modules/ . > >>> > >>> I wonder why you use > >>> > >>> get_filename_component(_currentListFileDir ${CMAKE_CURRENT_LIST_FILE} > >>> PATH) > >>> > >>> in there instead of CMAKE_CURRENT_LIST_DIR. > >> > >> Probably because CMAKE_CURRENT_LIST_DIR was just invented and is only > >> in CMake 2.8.3... get_filename_component works with several versions > >> of CMake, and does not require 2.8.3 or later. > > > > So I think it is _really_ necessary to go through all the CMake > > documentation items and add a line about when which feature was added. > > > > Everyone looks into his local CMake documentation and uses what he finds > > in there. And then it breaks on older versions. You currently have no > > chance to know what works but to install all older versions and do a > > binary search in the documentation. That simply does not scale. > > > > Eike > > _______________________________________________ > > Powered by www.kitware.com > > > > Visit other Kitware open-source projects at > > http://www.kitware.com/opensource/opensource.html > > > > Please keep messages on-topic and check the CMake FAQ at: > > http://www.cmake.org/Wiki/CMake_FAQ > > > > Follow this link to subscribe/unsubscribe: > > http://www.cmake.org/mailman/listinfo/cmake > > Adding that information in the documentation would be good, I agree. > (Although quite time consuming and costly for somebody...) > > But the best practice should be this: > > If you are using CMake 2.8.3 exclusively to develop features in your > source tree's CMakeLists files (or included .cmake scripts) then you > need to say "cmake_minimum_required(VERSION 2.8.3)" just to be on the > safe side. > > If you want to support CMake 2.6.4 (or whatever previous version you > require, for whatever reason), then you should be using *that* version > for your local development, and have that be the > cmake_minimum_required version. And use that version to look up > documentation...
E.g. here: http://www.cmake.org/Wiki/CMake_Released_Versions Alex _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake