linux-kernel - Re: [PATCH] perf: adjust make rules

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Message-ID: <20120314191758.GD9528@infradead.org>
Date:	Wed, 14 Mar 2012 16:17:58 -0300
From:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
To:	Jan Beulich <JBeulich@...e.com>
Cc:	a.p.zijlstra@...llo.nl, mingo@...e.hu, paulus@...ba.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] perf: adjust make rules

Em Thu, Mar 08, 2012 at 09:29:28AM +0000, Jan Beulich escreveu:
> Add rules to generate pre-processed files (just like are available for
> the normal kernel build), and adjust the rule to create assembly files
> from C ones to produce its output in the output directory rather than
> in the source tree.
> 
> Signed-off-by: Jan Beulich <jbeulich@...e.com>

I'm trying to use it but hit this:

[acme@...dy linux]$ make -C tools/perf/ O=/home/git/build/perf /home/git/build/perf/perf.s
make: Entering directory `/home/git/linux/tools/perf'
    CC /home/git/build/perf/perf.s
perf.c: In function ‘handle_options’:
perf.c:111: error: ‘PERF_HTML_PATH’ undeclared (first use in this function)
perf.c:111: error: (Each undeclared identifier is reported only once
perf.c:111: error: for each function it appears in.)
perf.c: At top level:
perf.c:238: error: ‘PERF_VERSION’ undeclared here (not in a function)
make: *** [/home/git/build/perf/perf.s] Error 1
make: Leaving directory `/home/git/linux/tools/perf'
[acme@...dy linux]

Do I have to go to tools/perf and do it from there, trying...

[acme@...dy perf]$ make O=/home/git/build/perf /home/git/build/perf/perf.s
    CC /home/git/build/perf/perf.s
perf.c: In function ‘handle_options’:
perf.c:111: error: ‘PERF_HTML_PATH’ undeclared (first use in this function)
perf.c:111: error: (Each undeclared identifier is reported only once
perf.c:111: error: for each function it appears in.)
perf.c: At top level:
perf.c:238: error: ‘PERF_VERSION’ undeclared here (not in a function)
make: *** [/home/git/build/perf/perf.s] Error 1
[acme@...dy perf]$ make O=/home/git/build/perf perf.s
make: *** No rule to make target `perf.s'.  Stop.
[acme@...dy perf]$

Same result, what am I doing wrong?

- Arnaldo
 
> ---
>  tools/perf/Makefile |    6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> --- 3.3-rc6/tools/perf/Makefile
> +++ 3.3-rc6-perf-make-rules/tools/perf/Makefile
> @@ -706,10 +706,14 @@ $(OUTPUT)perf.o perf.spec \
>  
>  $(OUTPUT)%.o: %.c $(OUTPUT)PERF-CFLAGS
>  	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) $<
> +$(OUTPUT)%.i: %.c $(OUTPUT)PERF-CFLAGS
> +	$(QUIET_CC)$(CC) -o $@ -E $(ALL_CFLAGS) $<
>  $(OUTPUT)%.s: %.c $(OUTPUT)PERF-CFLAGS
> -	$(QUIET_CC)$(CC) -S $(ALL_CFLAGS) $<
> +	$(QUIET_CC)$(CC) -o $@ -S $(ALL_CFLAGS) $<
>  $(OUTPUT)%.o: %.S
>  	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) $<
> +$(OUTPUT)%.s: %.S
> +	$(QUIET_CC)$(CC) -o $@ -E $(ALL_CFLAGS) $<
>  
>  $(OUTPUT)util/exec_cmd.o: util/exec_cmd.c $(OUTPUT)PERF-CFLAGS
>  	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) \
> 
> 
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