m4 error at startup

Stefan Monnier <[email protected]> Thu, 17 Oct 2019 10:45:43 -0400

Newsgroups	gmane.comp.window-managers.ctwm
Message-ID	<[email protected]>

Does anyone know what the following might be about?

    % ./build/ctwm                  
    /usr/bin/m4: syscmd subprocess: No child processes
    /usr/bin/m4:/tmp/monnier/ctwmrc.XXgtqmy0:31: cannot run command `/bin/rm
    /tmp/monnier/ctwmrc.XXgtqmy0': No child processes
    %
    
This is on a Debian system with no "syscmd" or "rm" in my own ~/.ctwmrc.
AFAIK "No child processes" indicates some kind of failure of `fork`, but
I can't see any reason why this should happen here (and especially why
it only affects that `m4` process started by `ctwm` and none of the
other processes in the system).  It happens every time I start `ctwm`.

Any idea?  This is using the latest code from the `master` branch of the
fullermd/ctwm-mirror Git repository.


        Stefan