New changes: Sender: cannot be blank, Sender: always overrides From:

[mmh] / m4 / netlibs.m4

dnl
dnl Updated for more modern systems.  Check to see if we need to link against
dnl optional libraries for networking functions.
dnl

AC_DEFUN([NMH_CHECK_NETLIBS],
[AC_SEARCH_LIBS([gethostbyname], [nsl], ,
                [AC_MSG_ERROR([gethostbyname not found])])
 AC_SEARCH_LIBS([connect], [socket], , [AC_MSG_ERROR([connect not found])])
])dnl