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From: Wang Nan <wangnan0@huawei.com>
To: <paulus@samba.org>, <mingo@redhat.com>, <acme@kernel.org>,
	<jolsa@redhat.com>, <namhyung@kernel.org>
Cc: <lizefan@huawei.com>, <linux-kernel@vger.kernel.org>
Subject: [PATCH] perf: perl: force to use stdbool.
Date: Thu, 15 Jan 2015 13:55:54 +0800	[thread overview]
Message-ID: <1421301354-58012-1-git-send-email-wangnan0@huawei.com> (raw)

When building perf for arm64 I hit a warning (and be treated as an
error) like below:

 aarch64-oe-linux-gcc -o .../util/scripting-engines/trace-event-python.o -c -Wbad-function-cast \
	 ... util/scripting-engines/trace-event-python.c

 In file included from .../usr/lib64/perl/5.14.3/CORE/perl.h:2464:0,
                  from Context.xs:23:
 /.../usr/lib64/perl/5.14.3/CORE/handy.h:108:0: error: "bool" redefined [-Werror]
  #  define bool char
  ^
 In file included from /.../usr/src/kernel/tools/include/linux/types.h:4:0,
                  from /.../usr/src/kernel/arch/arm64/include/uapi/asm/sigcontext.h:19,
		  from /.../usr/include/bits/sigcontext.h:27,
		  from /.../usr/include/signal.h:340,
		  from /.../usr/include/sys/param.h:28,
		  from /.../usr/lib64/perl/5.14.3/CORE/perl.h:678,
		  from Context.xs:23:
  /.../usr/lib/aarch64-oe-linux/gcc/aarch64-oe-linux/4.9.2/include/stdbool.h:33:0: note: this is the location of the previous definition
    #define bool _Bool

Looks like the failure is caused by arm64 uapi/asm/sigcontext.h, which
includes linux/types.h while other archs not.

This patch includes stdbool.h before Context.xs and define HAS_BOOL to
prevent perl'e headers define its own 'bool'.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
---
 tools/perf/scripts/perl/Perf-Trace-Util/Context.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/perf/scripts/perl/Perf-Trace-Util/Context.c b/tools/perf/scripts/perl/Perf-Trace-Util/Context.c
index 790ceba..69c3572 100644
--- a/tools/perf/scripts/perl/Perf-Trace-Util/Context.c
+++ b/tools/perf/scripts/perl/Perf-Trace-Util/Context.c
@@ -5,7 +5,8 @@
  *	ANY CHANGES MADE HERE WILL BE LOST! 
  *
  */
-
+#include <stdbool.h>
+#define HAS_BOOL 1
 #line 1 "Context.xs"
 /*
  * Context.xs.  XS interfaces for perf script.
-- 
1.8.4


             reply	other threads:[~2015-01-15  6:01 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-15  5:55 Wang Nan [this message]
2015-01-19 10:42 ` Wang Nan
2015-01-19 11:23   ` Jiri Olsa
2015-01-19 11:51     ` Wang Nan
2015-01-19 12:38       ` Jiri Olsa
2015-01-19 12:43         ` [PATCH v2] " Wang Nan
2015-01-19 14:26           ` Namhyung Kim
2015-01-20  1:59             ` [PATCH v3] " Wang Nan
2015-01-20  2:07             ` [PATCH v2] " Wang Nan
2015-01-28 15:00           ` [tip:perf/core] perf scripting perl: Force " tip-bot for Wang Nan

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