From 17e54358cc0a870b31aec78f48c5f8374ee58424 Mon Sep 17 00:00:00 2001
From: Bart Jacobs <bart.jacobs@cs.kuleuven.be>
Date: Thu, 18 Feb 2016 22:18:42 +0100
Subject: [PATCH] Guard unwind test against old OS X versions

---
 testsuite/tests/unwind/Makefile | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/testsuite/tests/unwind/Makefile b/testsuite/tests/unwind/Makefile
index 66deadb5c..686b808f2 100644
--- a/testsuite/tests/unwind/Makefile
+++ b/testsuite/tests/unwind/Makefile
@@ -1,6 +1,8 @@
+# The -keep_dwarf_unwind option of ld was introduced in ld version 224.1.
+# (The last released version where it is not supported is version 136.)
 default:
 	@printf " ... testing 'unwind_test':"
-	@if [ $(SYSTEM) = macosx ] && ! $(BYTECODE_ONLY); then \
+	@if [ $(SYSTEM) = macosx ] && ! $(BYTECODE_ONLY) && [[ `ld -v 2>&1` =~ ld64-([0-9]*) ]] && [[ 224 -le $${BASH_REMATCH[1]} ]]; then \
 	  $(MAKE) native_macosx_tests; \
 	else \
 	  echo " => skipped"; \