[Cmake] gtk-config / pkg-config

[Andy Cedilnik]

Hi Mathieu,

I am looking for a generic solution for pkg-config since I will need it
for openssl. I think there should be something like FindPKGConfig.cmake,
which sets some paths and couple of macros. Then you can use these
macros in other Find packages. For example:

IF(HAVE_PKGCONFIG)
  PKGCONFIG_GET_LIBRARIES(OPENSSL_LIBRARIES openssl)
  PKGCONFIG_GET_FLAGS(OPENSSL_FLAGS openssl)
ENDIF(HAVE_PKGCONFIG)

How does that sound?

			Andy

On Mon, 2003-05-05 at 08:46, Mathieu Malaterre wrote:
> Hi all,
> 	I needed to test my class wxVTKRenderWindowInteractor:
> http://www.creatis.insa-lyon.fr/~malaterre/wxVTK/
> 
> with GTK2 so I rewrote FindGTK.cmake (based on FindwxWindow) like this:
> 
> #######
> IF(WIN32)
> ...
> 
> ELSE(WIN32)
> 
>    FIND_PROGRAM(CMAKE_PKG_CONFIG pkg-config ../gtk/bin ../../gtk/bin)
>    IF(CMAKE_PKG_CONFIG)
>       SET(CMAKE_GTK_CXX_FLAGS "`${CMAKE_PKG_CONFIG} --cflags gtk+-2.0`")
>       SET(GTK_LIBRARIES "`${CMAKE_PKG_CONFIG} --libs gtk+-2.0`")
>    ELSE(CMAKE_PKG_CONFIG)
>       FIND_PROGRAM(CMAKE_GTK_CONFIG gtk-config ../gtk/bin ../../gtk/bin)
>       SET(CMAKE_GTK_CXX_FLAGS "`${CMAKE_GTK_CONFIG} --cxxflags`")
>       SET(GTK_LIBRARIES "`${CMAKE_GTK_CONFIG} --libs`")
>    ENDIF(CMAKE_PKG_CONFIG)
> ENDIF(WIN32)
> 
> MARK_AS_ADVANCED(
>    CMAKE_GTK_CXX_FLAGS
>    GTK_INCLUDE_DIR
> )
> 
> IF(GTK_LIBRARIES)
>    IF(CMAKE_GTK_CXX_FLAGS)
>      SET(GTK_FOUND 1)
>    ENDIF(CMAKE_GTK_CXX_FLAGS)
> ENDIF(GTK_LIBRARIES)
> #######
> 
> This take advantage of pkg-config which should replace *-config tool. See:
> http://www.freedesktop.org/software/pkgconfig/
> 
> But I am stuck:
> - I would like the user to choose either if he wants GTK 1.x or GTK 2.x 
> but I don't know how to handle this.
> 
> - Furthermore, the user should not be able to use GTK 2.x if pkg-config 
> can't be found (only gtk-config was found). There will be also some 
> problems if pkg-config is not in the path and is specified later...
> 
> Thanks for your suggestions,