From 0e89d6e7546d26a19a108d047b489d9ba6f7970c Mon Sep 17 00:00:00 2001
From: Michel Van den Bergh <michel.vandenbergh@uhasselt.be>
Date: Sun, 31 Oct 2021 19:35:30 +0100
Subject: [PATCH] Do not output to stderr during the build.

To help with debugging, the worker sends the output of
stderr (suitable truncated) to the action log on the
server, in case a build fails. For this to work it is
important that there is no spurious output to stderr.

closes https://github.com/official-stockfish/Stockfish/pull/3773

No functional change
---
 src/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Makefile b/src/Makefile
index fea597e7..5c52661b 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -751,7 +751,7 @@ profile-build: net config-sanity objclean profileclean
 	$(MAKE) ARCH=$(ARCH) COMP=$(COMP) $(profile_make)
 	@echo ""
 	@echo "Step 2/4. Running benchmark for pgo-build ..."
-	$(PGOBENCH) > /dev/null
+	$(PGOBENCH) 2>&1 | tail -n 4
 	@echo ""
 	@echo "Step 3/4. Building optimized executable ..."
 	$(MAKE) ARCH=$(ARCH) COMP=$(COMP) objclean
-- 
2.39.2