[MacPorts] #19781: modify cmake Modules for MacPorts prefix

[MacPorts]

#19781: modify cmake Modules for MacPorts prefix
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 Reporter:  dweber@…                     |       Owner:  macports-tickets@…                   
     Type:  enhancement                  |      Status:  new                                  
 Priority:  Normal                       |   Milestone:                                       
Component:  ports                        |     Version:  1.7.1                                
 Keywords:  FindITK.cmake cmake modules  |        Port:  cmake                                
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Comment(by dweber@…):

 More information about this...


 I've got a new revision of InsightToolkit working nicely, but it works
 best with a modification to the cmake module for FindITK.cmake.  This file
 is installed at
 {{{
 /opt/local/share/cmake-2.6/Modules/FindITK.cmake
 }}}

 In the current testing revision of InsightToolkit is at:

 https://svn.macosforge.org/repository/macports/users/dweber/graphics/InsightToolkit/Portfile

 http://trac.macports.org/changeset/51573

 The post-destroot creates version specific library and include paths, with
 symlinks to them from a generic path, and also modifies a few
 configuration files, including FindITK.cmake, so the system can find these
 version specific installations:

 {{{
 post-destroot {
     # For some reason, cmake does not install into the
 CMAKE_INSTALL_NAME_DIR
     move ${destroot}${prefix}/lib/${name}       ${destroot}${itkLibPath}
     move ${destroot}${prefix}/include/${name}   ${destroot}${itkIncPath}
     # Create a symlink from the generic lib and include for InsightToolkit
 to this version
     ln -sf ${distname} ${destroot}${prefix}/lib/${name}
     ln -sf ${distname} ${destroot}${prefix}/include/${name}
     # copy FindITK.cmake to a version specific file, which might persist
 even
     # when cmake is updated, deactivated, etc.
     set findITK [glob ${prefix}/share/cmake-*/Modules/FindITK.cmake]
     set findITKbranch [strsed ${findITK} #FindITK#FindITK-${branch}#]
     copy ${findITK} ${destroot}${findITK}
     copy ${findITK} ${destroot}${findITKbranch}
     # Change the content of $findITK and $findITKbranch, to find MacPorts
 lib
     set stdlib /usr/local/lib/InsightToolkit
     set newlib ${prefix}/lib/InsightToolkit
     reinplace "s|${stdlib}|${newlib}\\\n    ${newlib}-${branch}\\\n
 ${stdlib}|g" ${destroot}${findITK}
     reinplace "s|${stdlib}|${newlib}\\\n    ${newlib}-${branch}\\\n
 ${stdlib}|g" ${destroot}${findITKbranch}
     # Change the content of ITKConfig.cmake
     reinplace "s|${name}|${distname}|g"
 ${destroot}${itkLibPath}/ITKConfig.cmake
     copy ${destroot}${itkLibPath}/ITKConfig.cmake
 ${destroot}${itkLibPath}/itk-${branch}-config.cmake
 }
 }}}


 Note the reinplace commands in the post-destroot, which result in the
 following diff on FindITK.cmake:

 {{{
 --- FindITK.cmake-orig    2009-05-28 09:57:35.000000000 -0700
 +++ FindITK.cmake    2009-05-28 10:00:09.000000000 -0700
 @@ -50,6 +50,8 @@
      ${ITK_DIR_SEARCH}

      # Look in standard UNIX install locations.
 +    /opt/local/lib/InsightToolkit
 +    /opt/local/lib/InsightToolkit-3.12
      /usr/local/lib/InsightToolkit
      /usr/lib/InsightToolkit
 }}}

 Note that similar additions could be made for FindVTK.cmake, at about:

 {{{
     # Look in standard UNIX install locations.
     /usr/local/lib/vtk
     /usr/lib/vtk
 }}}

 The problem with modification to FindITK.cmake in the InsightToolkit is
 that the activation stage will fail without the -f flag to force an
 overwrite of the FindITK.cmake file provided by cmake.  It makes more
 sense to modify the cmake port directly.

 Do you agree these are useful changes to the cmake port?  Can I assume
 responsibility for making these changes to the cmake port?

 Thanks, Darren

-- 
Ticket URL: <http://trac.macports.org/ticket/19781#comment:1>
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