* [PATCH] tools build: replace $(CC) -E with $(CPP) for pre-processing
@ 2016-12-23 4:46 Masahiro Yamada
2016-12-23 10:59 ` Jiri Olsa
0 siblings, 1 reply; 3+ messages in thread
From: Masahiro Yamada @ 2016-12-23 4:46 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo
Cc: Jiri Olsa, Masahiro Yamada, Wang Nan, linux-kernel, Michal Marek,
Jiri Olsa
The top-level Makefile defines:
CPP = $(CC) -E
So, $(CC) -E can be replaced with $(CPP) and this makes more sense
for pre-processing.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
tools/build/Makefile.build | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
index 99c0ccd..4a0ec5c 100644
--- a/tools/build/Makefile.build
+++ b/tools/build/Makefile.build
@@ -65,7 +65,7 @@ quiet_cmd_cxx_o_c = CXX $@
cmd_cxx_o_c = $(CXX) $(cxx_flags) -c -o $@ $<
quiet_cmd_cpp_i_c = CPP $@
- cmd_cpp_i_c = $(CC) $(c_flags) -E -o $@ $<
+ cmd_cpp_i_c = $(CPP) $(c_flags) -o $@ $<
quiet_cmd_cc_s_c = AS $@
cmd_cc_s_c = $(CC) $(c_flags) -S -o $@ $<
--
2.7.4
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] tools build: replace $(CC) -E with $(CPP) for pre-processing
2016-12-23 4:46 [PATCH] tools build: replace $(CC) -E with $(CPP) for pre-processing Masahiro Yamada
@ 2016-12-23 10:59 ` Jiri Olsa
2016-12-24 6:24 ` Masahiro Yamada
0 siblings, 1 reply; 3+ messages in thread
From: Jiri Olsa @ 2016-12-23 10:59 UTC (permalink / raw)
To: Masahiro Yamada
Cc: Arnaldo Carvalho de Melo, Jiri Olsa, Wang Nan, linux-kernel,
Michal Marek
On Fri, Dec 23, 2016 at 01:46:42PM +0900, Masahiro Yamada wrote:
> The top-level Makefile defines:
>
> CPP = $(CC) -E
hum, so that'd work for running from top level, but I guess
it fails for compiling from other places..? like tools/perf
jirka
>
> So, $(CC) -E can be replaced with $(CPP) and this makes more sense
> for pre-processing.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
> ---
>
> tools/build/Makefile.build | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
> index 99c0ccd..4a0ec5c 100644
> --- a/tools/build/Makefile.build
> +++ b/tools/build/Makefile.build
> @@ -65,7 +65,7 @@ quiet_cmd_cxx_o_c = CXX $@
> cmd_cxx_o_c = $(CXX) $(cxx_flags) -c -o $@ $<
>
> quiet_cmd_cpp_i_c = CPP $@
> - cmd_cpp_i_c = $(CC) $(c_flags) -E -o $@ $<
> + cmd_cpp_i_c = $(CPP) $(c_flags) -o $@ $<
>
> quiet_cmd_cc_s_c = AS $@
> cmd_cc_s_c = $(CC) $(c_flags) -S -o $@ $<
> --
> 2.7.4
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] tools build: replace $(CC) -E with $(CPP) for pre-processing
2016-12-23 10:59 ` Jiri Olsa
@ 2016-12-24 6:24 ` Masahiro Yamada
0 siblings, 0 replies; 3+ messages in thread
From: Masahiro Yamada @ 2016-12-24 6:24 UTC (permalink / raw)
To: Jiri Olsa
Cc: Arnaldo Carvalho de Melo, Jiri Olsa, Wang Nan,
Linux Kernel Mailing List, Michal Marek
Hi Jiri,
2016-12-23 19:59 GMT+09:00 Jiri Olsa <jolsa@redhat.com>:
> On Fri, Dec 23, 2016 at 01:46:42PM +0900, Masahiro Yamada wrote:
>> The top-level Makefile defines:
>>
>> CPP = $(CC) -E
>
> hum, so that'd work for running from top level, but I guess
> it fails for compiling from other places..? like tools/perf
I thought users are supposed to build tools from the top-level, but
seems it is not necessarily true
according to your statement.
I am not quite sure how CC, AS, etc. are set-up, then.
Perhaps, relying on Make-builtin variables?
$ make --print-data-base | grep CPP
showed me the default of CPP is
CPP = $(CC) -E
I guess you are more familiar to the tools-build area,
so I follow your decision.
--
Best Regards
Masahiro Yamada
^ permalink raw reply [flat|nested] 3+ messages in thread
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2016-12-23 4:46 [PATCH] tools build: replace $(CC) -E with $(CPP) for pre-processing Masahiro Yamada
2016-12-23 10:59 ` Jiri Olsa
2016-12-24 6:24 ` Masahiro Yamada
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