--- sunwait.cpp.orig	2015-06-01 08:25:41.000000000 -0500
+++ sunwait.cpp	2017-10-08 14:56:36.000000000 -0500
@@ -34,7 +34,7 @@
 #endif
 
 // Linux
-#if defined __linux__
+#if defined __linux__ || defined __APPLE__
   #include <unistd.h>
 #endif
 
@@ -395,7 +395,7 @@
     /* Windows code: End */
 
     /* Linux code: Start */
-      #if defined __linux__
+      #if defined __linux__ || defined __APPLE__
         gmtime_r (pTimet, pTm);
       #endif
     /* Linux code: End */
@@ -415,7 +415,7 @@
     /* Windows code: End */
 
     /* Linux code: Start */
-      #if defined __linux__
+      #if defined __linux__ || defined __APPLE__
         localtime_r (pTimet, pTm);
       #endif
     /* Linux code: End */
@@ -477,7 +477,7 @@
   /* Windows code: End */
 
   /* Linux code: Start */
-  #if defined __linux__
+  #if defined __linux__ || defined __APPLE__
     char buffer [80];
     signed long int tmpLong = 0;
 
@@ -1121,7 +1121,7 @@
   /* Windows code: End */
 
   /* Linux code: Start */
-  #if defined __linux__
+  #if defined __linux__ || defined __APPLE__
     sleep (waitSeconds);    // Linux-only (seconds OK)
   #endif
   /* Linux code: End */
