# libsocket.m4 serial 1 - based on gnulib socketlib.m4

dnl Copyright (C) 2008-2012 Free Software Foundation, Inc.

dnl This file is free software; the Free Software Foundation

dnl gives unlimited permission to copy and/or distribute it,

dnl with or without modifications, as long as this notice is preserved.

dnl npth_SOCKETLIB

dnl Determines the library to use for socket functions.

dnl Sets and AC_SUBSTs LIBSOCKET.

AC_DEFUN([npth_LIBSOCKET],

[

  LIBSOCKET=

  dnl Unix API.

  dnl Solaris has most socket functions in libsocket.

  dnl Haiku has most socket functions in libnetwork.

  dnl BeOS has most socket functions in libnet.

  AC_CACHE_CHECK([for library containing setsockopt], [npth_cv_lib_socket], [

      npth_cv_lib_socket=

      AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern

#ifdef __cplusplus

"C"

#endif

char setsockopt();]], [[setsockopt();]])],

        [],

        [npth_save_LIBS="$LIBS"

         LIBS="$npth_save_LIBS -lsocket"

         AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern

#ifdef __cplusplus

"C"

#endif

char setsockopt();]], [[setsockopt();]])],

           [npth_cv_lib_socket="-lsocket"])

         if test -z "$npth_cv_lib_socket"; then

           LIBS="$npth_save_LIBS -lnetwork"

           AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern

#ifdef __cplusplus

"C"

#endif

char setsockopt();]], [[setsockopt();]])],

             [npth_cv_lib_socket="-lnetwork"])

           if test -z "$npth_cv_lib_socket"; then

             LIBS="$npth_save_LIBS -lnet"

             AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern

#ifdef __cplusplus

"C"

#endif

char setsockopt();]], [[setsockopt();]])],

               [npth_cv_lib_socket="-lnet"])

           fi

         fi

         LIBS="$npth_save_LIBS"

        ])

      if test -z "$npth_cv_lib_socket"; then

        npth_cv_lib_socket="none needed"

      fi

  ])

  if test "$npth_cv_lib_socket" != "none needed"; then

    LIBSOCKET="$npth_cv_lib_socket"

  fi

  AC_SUBST([LIBSOCKET])

])