Output from running autoreconf:
  configure.ac:40: warning: The macro `AC_TRY_COMPILE' is obsolete.
  configure.ac:40: You should run autoupdate.
  ./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
  configure.ac:40: the top level
  configure.ac:67: warning: The macro `AC_TRY_LINK' is obsolete.
  configure.ac:67: You should run autoupdate.
  ./lib/autoconf/general.m4:2920: AC_TRY_LINK is expanded from...
  lib/m4sugar/m4sh.m4:692: _AS_IF_ELSE is expanded from...
  lib/m4sugar/m4sh.m4:699: AS_IF is expanded from...
  ./lib/autoconf/general.m4:2249: AC_CACHE_VAL is expanded from...
  ./lib/autoconf/general.m4:2270: AC_CACHE_CHECK is expanded from...
  configure.ac:67: the top level
  configure.ac:106: warning: The macro `AC_TRY_COMPILE' is obsolete.
  configure.ac:106: You should run autoupdate.
  ./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
  configure.ac:106: the top level
  configure.ac:132: warning: The macro `AC_TRY_COMPILE' is obsolete.
  configure.ac:132: You should run autoupdate.
  ./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
  configure.ac:132: the top level
  configure.ac:40: warning: The macro `AC_TRY_COMPILE' is obsolete.
  configure.ac:40: You should run autoupdate.
  ./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
  configure.ac:40: the top level
  configure.ac:67: warning: The macro `AC_TRY_LINK' is obsolete.
  configure.ac:67: You should run autoupdate.
  ./lib/autoconf/general.m4:2920: AC_TRY_LINK is expanded from...
  lib/m4sugar/m4sh.m4:692: _AS_IF_ELSE is expanded from...
  lib/m4sugar/m4sh.m4:699: AS_IF is expanded from...
  ./lib/autoconf/general.m4:2249: AC_CACHE_VAL is expanded from...
  ./lib/autoconf/general.m4:2270: AC_CACHE_CHECK is expanded from...
  configure.ac:67: the top level
  configure.ac:106: warning: The macro `AC_TRY_COMPILE' is obsolete.
  configure.ac:106: You should run autoupdate.
  ./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
  configure.ac:106: the top level
  configure.ac:132: warning: The macro `AC_TRY_COMPILE' is obsolete.
  configure.ac:132: You should run autoupdate.
  ./lib/autoconf/general.m4:2847: AC_TRY_COMPILE is expanded from...
  configure.ac:132: the top level