Hi!
I'm building a project that require a 3rd party library libqxmpp. Both project 
uses cmake 
I want to build libqxmpp with ExternalProject_add, this the code I use:

ExternalProject_add(
        libqxmpp
        #no download, i'm using git submodule
        DOWNLOAD_COMMAND ""
        CMAKE_ARGS 
-DQT_QMAKE_EXECUTABLE=/devel/BIN/v4.6.1-git-phonon-dbg-release/bin/qmake 
-DCMAKE_INSTALL_PREFIX=${CMAKE_BINARY_DIR}
        SOURCE_DIR ${CMAKE_SOURCE_DIR}/src/3rdparty/qxmpp-read-only-git/source
)

The problem arise when I try to import a target from libqxmpp adding this to my 
project CMakeLists.txt:
#Import libQXmppClient 
include(${CMAKE_BINARY_DIR}/include/QXmppClient/QXmppClient.cmake)

Cmake cannot find QXmppClient.cmake because it will be created when I'll build 
the project.
How can I solve this problem? Are there better solution to build and link an 
external project?

This is the libqxmpp snippet that export the target:

INSTALL(TARGETS QXmppClient EXPORT QXmppClient DESTINATION lib)
INSTALL(EXPORT QXmppClient DESTINATION include/QXmppClient )

Nicola Brisotto
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