This is the default for the version of rpcgen shipped with Linux distributions, but the one in macOS and possibly others default to K&R C, which modern compilers don't appreciate. Luckily, all versions of rpcgen shipped with our target platforms seem to support the -C option. Signed-off-by: Andrea Bolognani <abologna(a)redhat.com&gt; --- src/rpc/genprotocol.pl | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/rpc/genprotocol.pl b/src/rpc/genprotocol.pl index adf3991d7a..37216303dc 100755 --- a/src/rpc/genprotocol.pl +++ b/src/rpc/genprotocol.pl @@ -41,6 +41,8 @@ unlink $target; if ($rpcgen =~ /portable-rpcgen/) { $rpcgen = "$rpcgen -o -"; +} else { + $rpcgen = "$rpcgen -C"; } open RPCGEN, "-|", "$rpcgen $mode $xdrdef" or die "cannot run $rpcgen $mode $xdrdef: $!"; -- 2.41.0