[U-Boot] [PATCH] MAKEALL: fix kill_children for BSD hosts

[Andreas Bießmann]

On 23.01.2013 00:51, Andreas Bießmann wrote:
> ps on BSD hosts (like OS X) do not provide the --no-headers switch nor
> understand the AIX format descriptions. Make the call for ps portable and filter
> the relevant line from output (including the header) with sed.
> Also switch from pgrep to ps to get the list of children and use the same
> mechanism as for pgid.
> 
> This patch makes the MAKEALL script cleanly stoppable on bare OS X when using
> the parallel builds of targets.
> 
> Signed-off-by: Andreas Bießmann <andreas.devel at googlemail.com>
> Cc: Joe Hershberger <joe.hershberger at ni.com>
> ---
>  MAKEALL | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/MAKEALL b/MAKEALL
> index 5b06c54..d926846 100755
> --- a/MAKEALL
> +++ b/MAKEALL
> @@ -784,8 +784,8 @@ build_targets() {
>  #-----------------------------------------------------------------------
>  
>  kill_children() {
> -	local pgid=`ps -p $$ --no-headers -o "%r" | tr -d ' '`
> -	local children=`pgrep -g $pgid | grep -v $$ | grep -v $pgid`
> +	local pgid=`ps -p $$ -o pgid | sed -e "/PGID/d"`
> +	local children=`ps -g $pgid -o pid | sed -e "/PID\|$$\|$pgid/d"`

Oumpf, just realized that the 'ps -g' is _not_ portable though. The
linux variant selects by session OR group name while the BSD variant
uses the process group.
I'm looking for a better solution which is portable.

Best regards

Andreas Bießmann