Commit 259d4077 authored Sep 05, 2017 by Arnaldo Carvalho de Melo

tools include linux: Guard against redefinition of some macros

When cross building to android r15c (and older versions) on Fedora 26
we notice these:

/opt/android-ndk-r15c/platforms/android-24/arch-arm/usr/include/sys/cdefs.h:332:0: note: this is the location of the previous definition

For __aligned, __packed and __noreturn, so guard those with ifdefs to
avoid drowning useful warnings in these.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-d7w3fa9c22dtmrwbedos6ie1@git.kernel.org

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

parent 770e9612

tools/include/linux/compiler-gcc.h

+6 −3

Original line number	Diff line number	Diff line
		@@ -21,11 +21,14 @@
		#define __must_be_array(a) BUILD_BUG_ON_ZERO(__same_type((a), &(a)[0]))

		#define noinline __attribute__((noinline))

		#ifndef __packed
		#define __packed __attribute__((packed))

		#endif
		#ifndef __noreturn
		#define __noreturn __attribute__((noreturn))

		#endif
		#ifndef __aligned
		#define __aligned(x) __attribute__((aligned(x)))
		#endif
		#define __printf(a, b) __attribute__((format(printf, a, b)))
		#define __scanf(a, b) __attribute__((format(scanf, a, b)))