From a95bf042d036c09b70542c8db3cc7f86f5949008 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 14 Oct 2015 07:56:53 +0000
Subject: configure.in: libunwind.h check

* configure.in: check for libunwind.h, which is not available in
  very old OS X SDK.  [ruby-core:71080] [Bug #11591]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52124 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 vm_dump.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'vm_dump.c')

diff --git a/vm_dump.c b/vm_dump.c
index 553acf2800..6a85413892 100644
--- a/vm_dump.c
+++ b/vm_dump.c
@@ -438,7 +438,7 @@ rb_vmdebug_thread_dump_state(VALUE self)
 # ifdef HAVE_LIBUNWIND
 #  undef backtrace
 #  define backtrace unw_backtrace
-# elif defined(__APPLE__) && defined(__x86_64__)
+# elif defined(__APPLE__) && defined(__x86_64__) && defined(HAVE_LIBUNWIND_H)
 #  define UNW_LOCAL_ONLY
 #  include <libunwind.h>
 #  undef backtrace
-- 
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