[Cmake] FindPackage + UsePackage

[Bitter, Ingmar (NIH/CC/DRD)]

Hi Andy,

I like your macro solution.
However, the FindXYZ.cmake files then would still have to be changed to
allow differentiating between debug and optimized versions of the library,
i.e. 

SET( QT_LINK_LIBRARIES optimized qt-mt312 optimized qtmain debug qt-mtd
debug qtmaind )

Also, if the link directory is separated from the library name, the overall
specification becomes shorter and easier to read. But for that FindXYZ.cmake
would also have to set a variable for the link directory, i.e. 

FIND_PATH(QT_LINKLIBRARY_DIR qtmain.lib
    $ENV{QTDIR}/include
    /usr/local/qt/include
    /usr/local/include
    /usr/include/qt
    /usr/include 
    C:/Progra~1/qt/include
  )

Is it better to make such additions to the FindXYZ.cmake and use your macro,
or is it better to add a UsePackage() function.
I'd prefer updating the FindXYZ.cmake files and using the following macro:

MACRO(FIND_AND_USE_PACKAGE pname)
  FIND_PACKAGE(pname)
  IF(${pname}_FOUND)
    INCLUDE_DIRECTORIES( ${${pname}_INCLUDE_DIR} )
    LINK_DIRECTORIES   ( ${${pname}_LIBRARY_PATH} )
    LINK_LIBRARIES     ( ${${pname}_LIBRARIES} )
  ENDIF(${pname}_FOUND)
ENDMACRO(FIND_AND_USE_PACKAGE)

-Ingmar


-----Original Message-----
From: Andy Cedilnik [mailto:andy.cedilnik at kitware.com] 
Sent: Tuesday, April 08, 2003 11:52 AM
To: Bill Hoffman
Cc: Bitter, Ingmar " "(NIH/CC/DRD); CMake
Subject: Re: [Cmake] FindPackage + UsePackage

Hi,

You can always do:

MACRO(FIND_AND_USE_PACKAGE pname)
  FIND_PACKAGE(pname)
  IF(${pname}_FOUND)
    INCLUDE_DIRECTORIES( ${${pname}_INCLUDE_DIR} )
    LINK_LIBRARIES ( ${${pname}_LIBRARIES} )
  ENDIF(${pname}_FOUND)
ENDMACRO(FIND_AND_USE_PACKAGE)

Then you would do:

FIND_AND_USE_PACKAGE(Ctn)
FIND_AND_USE_PACKAGE(VGL)
FIND_AND_USE_PACKAGE(ITK)
FIND_AND_USE_PACKAGE(Qt)
FIND_AND_USE_PACKAGE(Coin)
FIND_AND_USE_PACKAGE(OpenGL)
FIND_AND_USE_PACKAGE(Explorer)
FIND_AND_USE_PACKAGE(GLsdk)


			Andy

On Tue, 2003-04-08 at 11:43, Bill Hoffman wrote:
> It should be something like this:
> 
> FIND_PACKAGE(Qt)
> IF(QT_FOUND)
>    INCLUDE_DIRECTORIES( ${QT_INCLUDE_DIR} )
>    LINK_LIBRARIES ( ${QT_LIBRARIES} )
> ENDIF(QT_FOUND)
> 
> 
> The problem is that with some packages, you do not want to link
> in all the libraries, so what would a USE_PACKAGE do in that case?