--- xc/lib/X11/Imakefile.orig	2002-10-29 20:50:25.000000000 +0200
+++ xc/lib/X11/Imakefile	2002-10-29 20:50:52.000000000 +0200
@@ -1037,6 +1037,7 @@
 DependTarget3($(SRCS1),$(SRCS2),$(SRCS3))
 
 #if BuildLoadableXlibI18n
+BuildIncludes($(HEADERS),IncSubdir,..)
 MakeSubdirs($(SUBDIRS))
 DependSubdirs($(SUBDIRS))
 MakeLintLibSubdirs($(LINTSUBDIRS))