the ECHO macro is set to "echo" by default, but it is set to "true" if make(1) is invoked with the -s option while ECHO_CMD is always set to the echo command.
PR: 30748 Submitted by: anarcat@anarcat.dyndns.org
A sendmail alternative for small routers (only for outgoing mail). PR: 24263 Submitted by: Tomasz Paszkowski <ns88@k.pl>