bin/check-warn.sh: use tee, capture stderr

Sphinx automatically redirects all warnings and fatal errors to stderr.
Use tee to write these outputs to the log files directly and still keep
terminal output for debug purposes.

This also has the benefit of preserving coloring when we echo the
offending warnings.

Signed-off-by: Randolph Sapp <[email protected]>

Author: StaticRocket

bin/check-warn.sh

@@ -49,7 +49,7 @@ summary()
 
 	rm -f build/_new-warn.log
 	diff --changed-group-format="%>" --unchanged-group-format="" \
-		build/_a-warn.log build/_b-warn.log > build/_new-warn.log
+		build/_a.log build/_b.log > build/_new-warn.log
 
 	_num=$(wc -l build/_new-warn.log)
 
@@ -64,23 +64,21 @@ summary()
 
 generate_log()
 {
-	local git_hash log_name log_path warning_log_path
+	local git_hash log_name log_path
 
 	git_hash=$1
 	log_name=$2
 
 	log_path="build/${log_name}.log"
-	warning_log_path="build/${log_name}-warn.log"
 
 	git checkout "${git_hash}" || exit 10
 
 	mkdir -p build
 
-	rm -f "${log_path}" "${warning_log_path}"
+	rm -f "${log_path}"
 	make DEVFAMILY="${_dev}" OS="${_os}" clean
-	make DEVFAMILY="${_dev}" OS="${_os}" config >> "${log_path}" 2>&1 || exit 12
-	make DEVFAMILY="${_dev}" OS="${_os}" >> "${log_path}" 2>&1 || exit 13
-	grep "WARNING:" "${log_path}" > "${warning_log_path}"
+	make DEVFAMILY="${_dev}" OS="${_os}" config 2> >(tee -a "${log_path}" >&2) || exit 12
+	make DEVFAMILY="${_dev}" OS="${_os}" 2> >(tee -a "${log_path}" >&2) || exit 13
 }
 
 rev-parse()