# razor-de: Configure libudev environment

#

# UDEV_FOUND - system has a libudev

# UDEV_INCLUDE_DIR - where to find header files

# UDEV_LIBRARIES - the libraries to link against udev

# UDEV_STABLE - it's true when is the version greater or equals to 143 - version when the libudev was stabilized in its API

#

# copyright (c) 2011 Petr Vanek <petr@scribus.info>

# Redistribution and use is allowed according to the terms of the BSD license.

#

FIND_PATH(

    UDEV_INCLUDE_DIR

    libudev.h

    /usr/include

    /usr/local/include

    ${UDEV_PATH_INCLUDES}

)

FIND_LIBRARY(

    UDEV_LIBRARIES

    NAMES udev libudev

    PATHS

        /usr/lib${LIB_SUFFIX}

        /usr/local/lib${LIB_SUFFIX}

        ${UDEV_PATH_LIB}

)

IF (UDEV_LIBRARIES AND UDEV_INCLUDE_DIR)

    SET(UDEV_FOUND "YES")

    execute_process(COMMAND pkg-config --atleast-version=143 libudev RESULT_VARIABLE UDEV_STABLE)

    # retvale is 0 of the condition is "true" so we need to negate the value...

    if (UDEV_STABLE)

set(UDEV_STABLE 0)

    else (UDEV_STABLE)

set(UDEV_STABLE 1)

    endif (UDEV_STABLE)

    message(STATUS "libudev stable: ${UDEV_STABLE}")

ENDIF (UDEV_LIBRARIES AND UDEV_INCLUDE_DIR)

IF (UDEV_FOUND)

    MESSAGE(STATUS "Found UDev: ${UDEV_LIBRARIES}")

    MESSAGE(STATUS " include: ${UDEV_INCLUDE_DIR}")

ELSE (UDEV_FOUND)

    MESSAGE(STATUS "UDev not found.")

    MESSAGE(STATUS "UDev: You can specify includes: -DUDEV_PATH_INCLUDES=/opt/udev/include")

    MESSAGE(STATUS " currently found includes: ${UDEV_INCLUDE_DIR}")

    MESSAGE(STATUS "UDev: You can specify libs: -DUDEV_PATH_LIB=/opt/udev/lib")

    MESSAGE(STATUS " currently found libs: ${UDEV_LIBRARIES}")

    IF (UDev_FIND_REQUIRED)

        MESSAGE(FATAL_ERROR "Could not find UDev library")

    ENDIF (UDev_FIND_REQUIRED)

ENDIF (UDEV_FOUND)