From 7b230cfe2802a06d9d5cf3c0e3b880233f6fd3fd Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 30 Jun 2018 11:56:54 +0000
Subject: use sigsetjmp on macOS

SIGCHLD is used internally since r63758, the signal masks need to
be restored.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63803 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 configure.ac | 1 +
 1 file changed, 1 insertion(+)

diff --git a/configure.ac b/configure.ac
index f48db0733c..6b6dd0b9ba 100644
--- a/configure.ac
+++ b/configure.ac
@@ -766,6 +766,7 @@ AS_CASE(["$target_os"],
 		AS_IF([test $gcc_major -lt 4 -o \( $gcc_major -eq 4 -a $gcc_minor -lt 3 \)], [
 		    ac_cv_func___builtin_setjmp=no
 		])
+		with_setjmp_type=sigsetjmp # to hijack SIGCHLD handler
 		AC_CACHE_CHECK(for broken crypt with 8bit chars, rb_cv_broken_crypt,
 		    [AC_TRY_RUN([
 #include <stdio.h>
-- 
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