config/plugins.m4

   1 AC_DEFUN([AC_PLUGINS],
   2 [
   3   maybe_plugins=no
   4   AC_CHECK_HEADERS([dlfcn.h], [maybe_plugins=yes], [], [AC_INCLUDES_DEFAULT])
   5   AC_CHECK_HEADERS([windows.h], [maybe_plugins=yes], [], [AC_INCLUDES_DEFAULT])
   6
   7   AC_ARG_ENABLE([plugins],
   8     AS_HELP_STRING([--enable-plugins], [Enable support for plugins]),
   9     [case "${enableval}" in
  10       no) plugins=no ;;
  11       *) plugins=yes
  12          if test "$maybe_plugins" != "yes" ; then
  13            AC_MSG_ERROR([Building with plugin support requires a host that supports dlopen.])
  14          fi ;;
  15      esac],
  16     [plugins=$maybe_plugins]
  17   )
  18   if test "$plugins" = "yes"; then
  19     AC_SEARCH_LIBS([dlopen], [dl])
  20   fi
  21 ])