From 11ee3b872bc4a5c856737cc4ba981505288740fb Mon Sep 17 00:00:00 2001
From: Marc Herbert <marc.herbert@intel.com>
Date: Wed, 20 May 2020 11:36:04 -0700
Subject: [PATCH] tplg-build.sh: invoke m4 with --fatal-warnings

Also use || exit 255 to stop xargs from burying the error message(s).

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
---
 tools/test/topology/tplg-build.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/test/topology/tplg-build.sh b/tools/test/topology/tplg-build.sh
index bac1c0bea..cc8a29e28 100755
--- a/tools/test/topology/tplg-build.sh
+++ b/tools/test/topology/tplg-build.sh
@@ -267,7 +267,9 @@ then
 	shell_name=m4 # $0, only used in error messages
 	echo $M4_STRINGS | tr " " "," | tr '\n' '\0' |
 	  xargs  ${VERBOSE:+-t} -P${NO_PROCESSORS} -d ',' -n14 \
-	    bash ${VERBOSE:+-x} -c 'm4 "${@:1:${#}-1}" > ${14}.conf' $shell_name
+	    bash ${VERBOSE:+-x} -c \
+		'm4 --fatal-warnings "${@:1:${#}-1}" > ${14}.conf || exit 255' \
+		$shell_name
 
 	#execute alsatplg to create topology binary
 	printf '%s generating %s/*.tplg files with alsatplg...\n' \