diff -ru GIMP-Lensfun-0.2.4/src/gimplensfun.cpp GIMP-Lensfun-0.2.4.patched/src/gimplensfun.cpp
--- GIMP-Lensfun-0.2.4/src/gimplensfun.cpp	2015-11-15 20:46:17.000000000 +0000
+++ GIMP-Lensfun-0.2.4.patched/src/gimplensfun.cpp	2019-08-01 21:03:04.583007953 +0100
@@ -31,6 +31,7 @@
 #include <libgimp/gimp.h>
 #include <libgimp/gimpui.h>
 
+#include <exiv2/error.hpp>
 #include <exiv2/image.hpp>
 #include <exiv2/exif.hpp>