MAKEALL: fix kill_children for BSD hosts

ps on BSD hosts (like OS X) do not provide the --no-headers switch nor
understand the AIX format descriptions. Unfortunately there seems no solution to
get the PIDs of children in a platfrom independent manner.
Therefore detect the OS and decide upon that which way to go.

This patch makes the MAKEALL script cleanly stoppable on bare OS X when using
the parallel builds of targets.

Additionally this patch removes double call to grep by a single call to sed for
GNU style child PID detection.

Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/MAKEALL b/MAKEALL
index 397adef920a4f9e281ad7f44fe941b42c399f314..c1d895725643f41ae7a0cbaffbe693033bc9f472 100755 (executable)
--- a/MAKEALL
+++ b/MAKEALL
@@ -802,8 +802,20 @@ build_targets() {
 #-----------------------------------------------------------------------
 
 kill_children() {
-       local pgid=`ps -p $$ --no-headers -o "%r" | tr -d ' '`
-       local children=`pgrep -g $pgid | grep -v $$ | grep -v $pgid`
+       local OS=$(uname -s)
+       local children=""
+       case "${OS}" in
+               "Darwin")
+                       # Mac OS X is known to have BSD style ps
+                       local pgid=$(ps -p $$ -o pgid | sed -e "/PGID/d")
+                       children=$(ps -g $pgid -o pid | sed -e "/PID\|$$\|$pgid/d")
+                       ;;
+               *)
+                       # everything else tries the GNU style
+                       local pgid=$(ps -p $$ --no-headers -o "%r" | tr -d ' ')
+                       children=$(pgrep -g $pgid | sed -e "/$$\|$pgid/d")
+                       ;;
+       esac
 
        kill $children 2> /dev/null
        wait $children 2> /dev/null