From a38ad53acef6fad6857d011790fd7f38ce4e8bf6 Mon Sep 17 00:00:00 2001
From: "Bernhard M. Wiedemann" <bwiedemann@suse.de>
Date: Mon, 29 Oct 2018 15:11:28 +0100
Subject: [PATCH 1/2] zstd-pgo: do not make clean and zstd in parallel

otherwise, there might not be a ./zstd to run
---
 programs/Makefile | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/programs/Makefile b/programs/Makefile
index d0184c6c7..7b89e9204 100644
--- a/programs/Makefile
+++ b/programs/Makefile
@@ -203,8 +203,9 @@ zstd-noxz : LZMA_MSG := - xz/lzma support is disabled
 zstd-noxz : zstd
 
 
-zstd-pgo : MOREFLAGS = -fprofile-generate
-zstd-pgo : clean zstd
+zstd-pgo :
+	$(MAKE) clean
+	$(MAKE) zstd MOREFLAGS=-fprofile-generate
 	./zstd -b19i1 $(PROFILE_WITH)
 	./zstd -b16i1 $(PROFILE_WITH)
 	./zstd -b9i2 $(PROFILE_WITH)

From 572279e73e35e158886cca3a732a00fd1f24888c Mon Sep 17 00:00:00 2001
From: "Bernhard M. Wiedemann" <bwiedemann@suse.de>
Date: Mon, 29 Oct 2018 17:20:03 +0100
Subject: [PATCH 2/2] pgo: also optimize compression

and clean *.o so that linking does not fail from code
that is partially augmented with coverage generation instructions
---
 programs/Makefile | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/programs/Makefile b/programs/Makefile
index 7b89e9204..0bfb8b9a6 100644
--- a/programs/Makefile
+++ b/programs/Makefile
@@ -212,8 +212,7 @@ zstd-pgo :
 	./zstd -b $(PROFILE_WITH)
 	./zstd -b7i2 $(PROFILE_WITH)
 	./zstd -b5 $(PROFILE_WITH)
-	$(RM) zstd
-	$(RM) $(ZSTDDECOMP_O)
+	$(RM) zstd *.o $(ZSTDDECOMP_O) $(ZSTDDIR)/compress/*.o
 	$(MAKE) zstd MOREFLAGS=-fprofile-use
 
 # minimal target, with only zstd compression and decompression. no bench. no legacy.