patch 9.0.1110: build fails on Mac OS X 10.4/10.5

Problem:    Build fails on Mac OS X 10.4/10.5 .
Solution:   Check if the dispatch/dispatch.h header exists. (Evan Miller,
            closes #11746)

src/auto/configure

@@ -4816,6 +4816,19 @@ fi
 
 done
 
+# 10.5 and earlier lack dispatch
+for ac_header in dispatch/dispatch.h
+do :
+  ac_fn_c_check_header_mongrel "$LINENO" "dispatch/dispatch.h" "ac_cv_header_dispatch_dispatch_h" "$ac_includes_default"
+if test "x$ac_cv_header_dispatch_dispatch_h" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_DISPATCH_DISPATCH_H 1
+_ACEOF
+
+fi
+
+done
+
 
 
 

src/config.h.in

@@ -236,6 +236,7 @@
 
 /* Define if you have the header file: */
 #undef HAVE_DIRENT_H
+#undef HAVE_DISPATCH_DISPATCH_H
 #undef HAVE_ERRNO_H
 #undef HAVE_FCNTL_H
 #undef HAVE_FRAME_H

src/configure.ac

@@ -314,6 +314,8 @@ fi
 dnl Mac OS X 10.9+ no longer include AvailabilityMacros.h in Carbon
 dnl so we need to include it to have access to version macros.
 AC_CHECK_HEADERS(AvailabilityMacros.h)
+# 10.5 and earlier lack dispatch
+AC_CHECK_HEADERS(dispatch/dispatch.h)
 
 AC_SUBST(OS_EXTRA_SRC)
 AC_SUBST(OS_EXTRA_OBJ)

src/feature.h

@@ -272,7 +272,8 @@
  */
 #if defined(FEAT_NORMAL) \
 	&& defined(FEAT_EVAL) \
-	&& ((defined(HAVE_GETTIMEOFDAY) && defined(HAVE_SYS_TIME_H)) \
+	&& ((defined(HAVE_GETTIMEOFDAY) && defined(HAVE_SYS_TIME_H) \
+        && (!defined(MACOS_X) || defined(HAVE_DISPATCH_DISPATCH_H))) \
 		|| defined(MSWIN))
 # define FEAT_RELTIME
 #endif

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1110,
 /**/
     1109,
 /**/