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 <wangn...@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
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