git.sesse.net Git - vlc/blob - extras/buildsystem/cmake/include/FindDlopen.cmake

   1 # From licq www.licq.org (GPL)
   2 # - Find library containing dlopen()
   3 # The following variables are set if dlopen is found. If dlopen is not
   4 # found, Dlopen_FOUND is set to false.
   5 #  Dlopen_FOUND     - System has dlopen.
   6 #  Dlopen_LIBRARIES - Link these to use dlopen.
   7 #
   8 # Copyright (c) 2007 Erik Johansson <erik@ejohansson.se>
   9 # Redistribution and use is allowed according to the terms of the BSD license.
  10
  11
  12 if (NOT Dlopen_SEARCHED)
  13     include(CheckLibraryExists)
  14
  15     set(Dlopen_SEARCHED TRUE CACHE INTERNAL "")
  16     set(Dlopen_FOUND FALSE CACHE INTERNAL "")
  17
  18     foreach (library c c_r dl)
  19       if (NOT Dlopen_FOUND)
  20         check_library_exists(${library} dlopen "" Dlopen_IN_${library})
  21
  22         if (Dlopen_IN_${library})
  23           set(Dlopen_LIBRARIES ${library} CACHE STRING "Library containing dlopen")
  24           set(Dlopen_FOUND TRUE CACHE INTERNAL "")
  25         endif (Dlopen_IN_${library})
  26
  27       endif (NOT Dlopen_FOUND)
  28     endforeach (library)
  29
  30     if (Dlopen_FOUND)
  31       if (NOT Dlopen_FIND_QUIETLY)
  32         message(STATUS "Found dlopen in: ${Dlopen_LIBRARIES}")
  33       endif (NOT Dlopen_FIND_QUIETLY)
  34     else (Dlopen_FOUND)
  35       if (Dlopen_FIND_REQUIRED)
  36         message(FATAL_ERROR "Could not find the library containing dlopen")
  37       endif (Dlopen_FIND_REQUIRED)
  38     endif (Dlopen_FOUND)
  39
  40     mark_as_advanced(Dlopen_LIBRARIES)
  41 endif(NOT Dlopen_SEARCHED)