$OpenBSD: patch-doc_Makefile_in,v 1.18 2012/08/30 14:28:22 ajacoutot Exp $
--- doc/Makefile.in.orig	Wed Aug  8 16:35:43 2012
+++ doc/Makefile.in	Sat Aug 25 17:06:13 2012
@@ -606,7 +606,7 @@ $(BUILT_SOURCES): manual.xml
 	@if [ -z $(PROG_XMLTO) ]; then \
 		echo Please install xmlto to generate manual pages; \
 	else \
-		LC_ALL=en_US.UTF-8 $(PROG_XMLTO) man ${top_srcdir}/doc/manual.xml; \
+		LC_ALL=C $(PROG_XMLTO) man ${top_srcdir}/doc/manual.xml; \
 	fi
 
 # force allpages to wait on output from xmlto
