linux-kernel - [PATCH] perf tools: Suppress 'rm dlfilter' build message

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Message-Id: <20210930062849.110416-1-adrian.hunter@intel.com>
Date:   Thu, 30 Sep 2021 09:28:49 +0300
From:   Adrian Hunter <adrian.hunter@...el.com>
To:     Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:     Jiri Olsa <jolsa@...hat.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] perf tools: Suppress 'rm dlfilter' build message

The following build message:

	rm dlfilters/dlfilter-test-api-v0.o

is unwanted.

The object fle is being treated as an intermediate file and being
automatically removed. Mark the object file as .SECONDARY to prevent
removal and hence the message.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
---
 tools/perf/Makefile.perf | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index e04313c4d840..ab8cb17d9ec5 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -787,6 +787,8 @@ $(OUTPUT)dlfilters/%.o: dlfilters/%.c include/perf/perf_dlfilter.h
 	$(Q)$(MKDIR) -p $(OUTPUT)dlfilters
 	$(QUIET_CC)$(CC) -c -Iinclude $(EXTRA_CFLAGS) -o $@ -fpic $<
 
+.SECONDARY: $(DLFILTERS:.so=.o)
+
 $(OUTPUT)dlfilters/%.so: $(OUTPUT)dlfilters/%.o
 	$(QUIET_LINK)$(CC) $(EXTRA_CFLAGS) -shared -o $@ $<
 
-- 
2.25.1