From 5c7f36a1b81216d1a31652c54b628bc364f08245 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
---
 configure.in | 1 +
 1 file changed, 1 insertion(+)

(limited to 'configure.in')

diff --git a/configure.in b/configure.in
index 5781c5ceef..15f8182bd7 100644
--- a/configure.in
+++ b/configure.in
@@ -3210,6 +3210,7 @@ AS_CASE(["$target_cpu-$target_os"],
     AC_CHECK_HEADERS([execinfo.h])
     if test "x$ac_cv_header_execinfo_h" = xyes; then
 	AC_CHECK_LIB([execinfo], [backtrace])
+	AC_CHECK_HEADERS([libunwind.h])
     fi],
 [*-freebsd*|x86_64-netbsd*], [
     AC_CHECK_HEADERS([execinfo.h])
-- 
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