From: Peter van Dijk <peter.van.dijk@powerdns.com>
Date: Tue, 14 Nov 2017 09:17:58 +0000 (+0100)
Subject: recent Apple Xcode headers need this
X-Git-Tag: rec-4.1.0-rc3~2^2~1
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e201675a3aa63712f8d08c27f2cedc10873b8f4c;p=pdns

recent Apple Xcode headers need this

reference: https://github.com/arvidn/libtorrent/issues/2364#issuecomment-336175406
---

diff --git a/m4/pdns_check_os.m4 b/m4/pdns_check_os.m4
index ba6546dfa..860f9aa0e 100644
--- a/m4/pdns_check_os.m4
+++ b/m4/pdns_check_os.m4
@@ -19,7 +19,7 @@ AC_DEFUN([PDNS_CHECK_OS],[
     have_linux="yes"
     ;;
   darwin*)
-    CXXFLAGS="-D__APPLE_USE_RFC_3542 -D_XOPEN_SOURCE $CXXFLAGS"
+    CXXFLAGS="-D__APPLE_USE_RFC_3542 -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE $CXXFLAGS"
     ;;
   freebsd*)
     THREADFLAGS="-pthread"