help2man is looking at the generated binary for help output. This does not work for cross compilations. So taking out the local PREPATH (../src) directory from path so that help2 man can find the native version of the bison in the native sysroot directory.

Date: 2010/06/28
Signed-Off-By: Nitin A Kamble <nitin.a.kamble@intel.com>

Index: bison-2.4.2/doc/Makefile.am
===================================================================
--- bison-2.4.2.orig/doc/Makefile.am
+++ bison-2.4.2/doc/Makefile.am
@@ -77,7 +77,7 @@ PREPATH = $(top_builddir)/src
 	  (cd $$dir && $(MAKE) $(AM_MAKEFLAGS) $$program) || exit;	\
 	done
 	@echo "Updating man page $@"
-	PATH="$(PREPATH)$(PATH_SEPARATOR)$$PATH";			     \
+#	PATH="$(PREPATH)$(PATH_SEPARATOR)$$PATH";			     
 	export PATH;							     \
 	$(HELP2MAN)							     \
 	    --include=$*.x						     \
