[tip:perf/core] perf tools: Limit unwind support to x86 archs

[tip:perf/core] perf tools: Limit unwind support to x86 archs

[tip-bot for Jiri Olsa]

Commit-ID:  02320931ce000836aa231ac1311769e303122099
Gitweb:     http://git.kernel.org/tip/02320931ce000836aa231ac1311769e303122099
Author:     Jiri Olsa <jolsa@redhat.com>
AuthorDate: Thu, 14 Feb 2013 15:59:33 -0300
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 14 Feb 2013 15:59:33 -0300

perf tools: Limit unwind support to x86 archs

There's DWARF unwind support only for x86 archs, so limit the unwind.o
object to them only.

Without this building for other archs (e.g. cross compiling for ARM) is
broken.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Link: http://lkml.kernel.org/n/tip-viqtvd6hppqgt68zz4wlqm20@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/Makefile | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/perf/Makefile b/tools/perf/Makefile
index 1c8df6f..b90528d 100644
--- a/tools/perf/Makefile
+++ b/tools/perf/Makefile
@@ -581,6 +581,11 @@ else
 endif # SOURCE_LIBELF
 endif # NO_LIBELF
 
+# There's only x86 (both 32 and 64) support for CFI unwind so far
+ifneq ($(ARCH),x86)
+	NO_LIBUNWIND := 1
+endif
+
 ifndef NO_LIBUNWIND
 # for linking with debug library, run like:
 # make DEBUG=1 LIBUNWIND_DIR=/opt/libunwind/