From 6309459839e49129487a38d7c6aa16c2991f57ea Mon Sep 17 00:00:00 2001
From: Bernhard Miklautz <bernhard.miklautz@shacknet.at>
Date: Sat, 23 Sep 2017 13:31:34 +0200
Subject: [PATCH] macOS: add a workaround to build with newer SDKs

SDK 10.13 (and possibly olders as well) need HAVE_UNISTD_H to be set to
a value if available otherwise the following error is thrown:

/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk/usr/include/dispatch/dispatch.h:38:45:
 error: expected value in expression #if !defined(HAVE_UNISTD_H) || HAVE_UNISTD_H
---
 config.h.in | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/config.h.in b/config.h.in
index b634b53..f6850c8 100644
--- a/config.h.in
+++ b/config.h.in
@@ -3,7 +3,11 @@
 
 /* Include files */
 #cmakedefine HAVE_FCNTL_H
+#if defined(__APPLE__) && !defined(__IOS__)
+#cmakedefine01 HAVE_UNISTD_H
+#else
 #cmakedefine HAVE_UNISTD_H
+#endif
 #cmakedefine HAVE_INTTYPES_H
 #cmakedefine HAVE_SYS_MODEM_H
 #cmakedefine HAVE_SYS_FILIO_H
-- 
2.7.4