2 files changed, 5 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index a63fbc96bff..6a3b1701726 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2011-04-20  Ken Brown  <kbrown@cornell.edu>
+
+        * configure.in (use_mmap_for_buffers): Set to yes on Cygwin.
+
 2011-04-12  Glenn Morris  <rgm@gnu.org>
 
         * configure.in: Require ImageMagick >= 6.2.8.  (Bug#7955)
diff --git a/configure.in b/configure.in
index 3d99873eabb..d20dee81e5b 100644
--- a/configure.in
+++ b/configure.in
@@ -1631,7 +1631,7 @@ fi
 
 use_mmap_for_buffers=no
 case "$opsys" in
-  freebsd|irix6-5) use_mmap_for_buffers=yes ;;
+  cygwin|freebsd|irix6-5) use_mmap_for_buffers=yes ;;
 esac
 
 AC_FUNC_MMAP