On Tuesday 09 February 2010, Mike Jackson wrote:
> Here is one I wrote for Expat:
>
>
> ------8<------------------------------------------------
> # - Find expat
> # Find the native EXPAT headers and libraries.
> #
> # EXPAT_INCLUDE_DIRS - where to find expat.h, etc.
> # EXPAT_LIBRARIES - List of libraries when using expat.
> # EXPAT_LIBRARY_DEBUG - Debug version of Library
> # EXPAT_LIBRARY_RELEASE - Release Version of Library
> # EXPAT_FOUND - True if expat found.
>
>
> ############################################
> #
> # Check the existence of the libraries.
> #
> ############################################
> # This macro was taken directly from the FindQt4.cmake file that is
> included # with the CMake distribution. This is NOT my work. All work was
> done by the # original authors of the FindQt4.cmake file. Only minor
> modifications were # made to remove references to Qt and make this file
> more generally applicable
> #########################################################################
>
> MACRO (ADJUST_LIB_VARS basename)
> IF (${basename}_INCLUDE_DIR)
>
> # if only the release version was found, set the debug variable also
> to the release version
> IF (${basename}_LIBRARY_RELEASE AND NOT ${basename}_LIBRARY_DEBUG)
> SET(${basename}_LIBRARY_DEBUG ${${basename}_LIBRARY_RELEASE})
> SET(${basename}_LIBRARY ${${basename}_LIBRARY_RELEASE})
> SET(${basename}_LIBRARIES ${${basename}_LIBRARY_RELEASE})
> ENDIF (${basename}_LIBRARY_RELEASE AND NOT ${basename}_LIBRARY_DEBUG)
Yes, that's what FindQt4.cmake was doing basically, but we switched that now
to use imported targets instead:
IF (QT_${basename}_LIBRARY_RELEASE OR QT_${basename}_LIBRARY_DEBUG)
IF(NOT TARGET Qt4::${_camelCaseBasename})
ADD_LIBRARY(Qt4::${_camelCaseBasename} UNKNOWN IMPORTED )
IF (QT_${basename}_LIBRARY_RELEASE)
SET_PROPERTY(TARGET Qt4::${_camelCaseBasename} APPEND PROPERTY
IMPORTED_CONFIGURATIONS RELEASE)
SET_PROPERTY(TARGET Qt4::${_camelCaseBasename} PROPERTY
IMPORTED_LOCATION_RELEASE "${QT_${basename}_LIBRARY_RELEASE}" )
ENDIF (QT_${basename}_LIBRARY_RELEASE)
IF (QT_${basename}_LIBRARY_DEBUG)
SET_PROPERTY(TARGET Qt4::${_camelCaseBasename} APPEND PROPERTY
IMPORTED_CONFIGURATIONS DEBUG)
SET_PROPERTY(TARGET Qt4::${_camelCaseBasename} PROPERTY
IMPORTED_LOCATION_DEBUG "${QT_${basename}_LIBRARY_DEBUG}" )
ENDIF (QT_${basename}_LIBRARY_DEBUG)
ENDIF(NOT TARGET Qt4::${_camelCaseBasename})
SET(QT_${basename}_LIBRARY Qt4::${_camelCaseBasename} )
SET(QT_${basename}_LIBRARIES Qt4::${_camelCaseBasename} )
Now you can either use the imported targets Qt4::QtCore etc. directly in your
target_link_libraries() calls, or you can still use QT4_QTCORE_LIBRARIES, but
they now point to the imported targets.
The advantage of these imported targets is that the different build
configurations can be handled cleanly. I.e. you can specifiy a location for
each build type, and you can map buildtypes from your project to those of the
imported target.
So I would recommend to try to use imported targets for this.
Alex
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