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SubjectRe: [PATCH] perf: perl: force to use stdbool.
Add Jiri Olsa jolsa@kernel.org to CC list. I think jolsa@kernel.org should be the main
email address he uses.

On 2015/1/15 13:55, Wang Nan wrote:
> 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.
>




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