FindZeroMQ.cmake

# ZeroMQ.cmake from http://lists.gforge.inria.fr/pipermail/simgrid-devel/2012-July/001513.html

SET (ZEROMQ_FIND_QUIETLY TRUE)
SET (ZEROMQ_FIND_REQUIRED FALSE)

IF (NOT ZEROMQ_FOUND)
    # Search user environment for headers, then default paths
    FIND_PATH (ZEROMQ_INCLUDE_DIR zmq.hpp
            PATHS ${ZEROMQROOT}/include $ENV{ZEROMQROOT}/include /usr/local/include
            NO_DEFAULT_PATH)
    FIND_PATH (ZEROMQ_INCLUDE_DIR zmq.hpp)
    GET_FILENAME_COMPONENT (ZEROMQROOT ${ZEROMQ_INCLUDE_DIR} PATH)

    # Search user environment for libraries, then default paths
    FIND_LIBRARY (ZEROMQ_LIBRARIES zmq
            PATHS ${ZEROMQROOT}/lib $ENV{ZEROMQROOT}/lib /usr/local/lib
            NO_DEFAULT_PATH)
    FIND_LIBRARY (ZEROMQ_LIBRARIES zmq)

    # Set ZEROMQ_FOUND and error out if zmq is not found
    INCLUDE (FindPackageHandleStandardArgs)
    FIND_PACKAGE_HANDLE_STANDARD_ARGS (ZEROMQ
            DEFAULT_MSG ZEROMQ_LIBRARIES ZEROMQ_INCLUDE_DIR)

    IF (ZEROMQ_FOUND)
        MESSAGE (STATUS "ZeroMQ found: zmq library and zmq.hpp ")
        MESSAGE (STATUS "  * includes: ${ZEROMQ_INCLUDE_DIR}")
        MESSAGE (STATUS "  * libs:     ${ZEROMQ_LIBRARIES}")
    ELSE (ZEROMQ_FOUND)
        IF(${ZEROMQ_LIBRARIES} STREQUAL "ZEROMQ_LIBRARIES-NOTFOUND")
            MESSAGE (STATUS "ZeroMQ library does not exist")
        ELSEIF(${ZEROMQ_INCLUDE_DIR} STREQUAL "ZEROMQ_INCLUDE_DIR-NOTFOUND")
            MESSAGE (STATUS "ZeroMQ has a problem: zmq.hpp does not exist, try to download it from https://github.com/zeromq/cppzmq/blob/master/zmq.hpp")
        ENDIF()
    ENDIF (ZEROMQ_FOUND)
ENDIF (NOT ZEROMQ_FOUND)