--- vigra-1.11.1/config/vigra-config.in	2017-12-16 14:34:37.544633998 -0600
+++ vigra-1.11.1/config/vigra-config.in	2017-12-16 14:38:16.297616754 -0600
@@ -93,4 +93,4 @@ if op.include_path: # was: --include_pat
     print('@CMAKE_INSTALL_PREFIX@/include')
 
 if op.docdir:
-    print('@DOCDIR@')
+    print('@CMAKE_INSTALL_PREFIX@/@DOCINSTALL@')