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Subject: Re: [PATCH] perf tools: Suppress 'rm dlfilter' build message
To:     Adrian Hunter <adrian.hunter@intel.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>
Cc:     Jiri Olsa <jolsa@redhat.com>, linux-kernel@vger.kernel.org
References: <20210930062849.110416-1-adrian.hunter@intel.com>
From:   kajoljain <kjain@linux.ibm.com>
Message-ID: <9bb7e02d-1394-4b1e-f955-97f2f9f9f6f0@linux.ibm.com>
Date:   Thu, 30 Sep 2021 16:10:42 +0530
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On 9/30/21 11:58 AM, Adrian Hunter wrote:
> The following build message:
> 
> 	rm dlfilters/dlfilter-test-api-v0.o
> 
> is unwanted.
> 

Hi Adrian,

> The object fle is being treated as an intermediate file and being

Just minor nit, it should be `object file` not `object fle`

Thanks,
Kajol Jain

> automatically removed. Mark the object file as .SECONDARY to prevent
> removal and hence the message.
> 
> Signed-off-by: Adrian Hunter <adrian.hunter@intel.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 $@ $<
>  
>