# - Try to find Popt
# Once done this will define
#
#  POPT_FOUND - system has Popt
#  POPT_INCLUDE_DIRS - the Popt include directory
#  POPT_LIBRARIES - Link these to use Popt
#  POPT_DEFINITIONS - Compiler switches required for using Popt
#
#  Copyright (c) 2008 Joshua L. Blocher <verbalshadow@gmail.com>
#
#  Redistribution and use is allowed according to the terms of the New
#  BSD license.
#  For details see the accompanying COPYING-CMAKE-SCRIPTS file.
#


if (POPT_LIBRARIES AND POPT_INCLUDE_DIRS)
  # in cache already
  set(POPT_FOUND TRUE)
else (POPT_LIBRARIES AND POPT_INCLUDE_DIRS)
  # use pkg-config to get the directories and then use these values
  # in the FIND_PATH() and FIND_LIBRARY() calls
  if (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
    include(UsePkgConfig)
    pkgconfig(popt _POPT_INCLUDEDIR _POPT_LIBDIR _POPT_LDFLAGS _POPT_CFLAGS)
  else (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
    find_package(PkgConfig)
    if (PKG_CONFIG_FOUND)
      pkg_check_modules(_POPT popt)
    endif (PKG_CONFIG_FOUND)
  endif (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4)
  find_path(POPT_INCLUDE_DIR
    NAMES
      popt.h
    PATHS
      ${_POPT_INCLUDEDIR}
      /usr/include
      /usr/local/include
      /opt/local/include
      /sw/include
      $ENV{DEVLIBS_PATH}//include//
    PATH_SUFFIXES
      popt
  )

  find_library(POPT_LIBRARY
    NAMES
      popt
    PATHS
      ${_POPT_LIBDIR}
      /usr/lib
      /usr/local/lib
      /opt/local/lib
      /sw/lib
  )

  if (POPT_LIBRARY)
    set(POPT_FOUND TRUE)
  endif (POPT_LIBRARY)

  set(POPT_INCLUDE_DIRS
    ${POPT_INCLUDE_DIR}
  )

  if (POPT_FOUND)
    set(POPT_LIBRARIES
      ${POPT_LIBRARIES}
      ${POPT_LIBRARY}
    )
  endif (POPT_FOUND)

  if (POPT_INCLUDE_DIRS AND POPT_LIBRARIES)
     set(POPT_FOUND TRUE)
  endif (POPT_INCLUDE_DIRS AND POPT_LIBRARIES)

  if (POPT_FOUND)
    if (NOT Popt_FIND_QUIETLY)
      message(STATUS "Found Popt: ${POPT_LIBRARIES}")
    endif (NOT Popt_FIND_QUIETLY)
  else (POPT_FOUND)
    if (Popt_FIND_REQUIRED)
      message(FATAL_ERROR "Could not find Popt")
    endif (Popt_FIND_REQUIRED)
  endif (POPT_FOUND)

  # show the POPT_INCLUDE_DIRS and POPT_LIBRARIES variables only in the advanced view
  mark_as_advanced(POPT_INCLUDE_DIRS POPT_LIBRARIES)

endif (POPT_LIBRARIES AND POPT_INCLUDE_DIRS)