From 8070bfbdecbb27eb2f1a67119e53cc6c54a479eb Mon Sep 17 00:00:00 2001
From: David Carlier <devnexen@gmail.com>
Date: Sun, 9 Jan 2022 17:10:21 +0000
Subject: [PATCH] pcntl_rfork build fix for DragonFlyBSD.

RFTSIGZMB flag unsupported, guarding with the said flag instead of system
in case the implementaion catches up with FreeBSD's.
---
 ext/pcntl/pcntl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/ext/pcntl/pcntl.c b/ext/pcntl/pcntl.c
index 54ed5c4b90e91..c1c99ab9a8d85 100644
--- a/ext/pcntl/pcntl.c
+++ b/ext/pcntl/pcntl.c
@@ -1528,9 +1528,11 @@ PHP_FUNCTION(pcntl_rfork)
 		flags |= RFPROC;
 	}
 
+#ifdef RFTSIGZMB
 	if ((flags & RFTSIGZMB) != 0) {
 		flags |= RFTSIGFLAGS(csignal);
 	}
+#endif
 
 	pid = rfork(flags);