diff -u im.orig/src/libtiff/tiffiop.h im.new/src/libtiff/tiffiop.h
--- im.orig/src/libtiff/tiffiop.h	2016-06-21 16:52:25.000000000 +0200
+++ im.new/src/libtiff/tiffiop.h	2016-07-09 19:58:51.024081400 +0200
@@ -59,7 +59,7 @@
 */
 #endif
 
-#ifdef WIN32
+#if defined(WIN32) && !defined(__CYGWIN__)
 #define snprintf _snprintf
 #if _MSC_VER >= 1900 /* IMLIB vc14 */
 #undef snprintf
diff -u im.orig/src/libexif/config.h im.new/src/libexif/config.h
--- im.orig/src/libexif/config.h	2015-02-05 16:54:16.956068700 +0100
+++ im.new/src/libexif/config.h	2015-02-06 18:52:07.037795100 +0100
@@ -6,7 +6,7 @@
 /* The gettext domain we're using */
 #define GETTEXT_PACKAGE "libexif-9"
 
-#ifdef WIN32
+#if defined(WIN32) && !defined(__CYGWIN__)
 #define exif_snprintf _snprintf
 #else
 #define exif_snprintf snprintf