X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/e2c2f696504e69ad69beb700c5e37b0ff6d0b81b..2bde91138d696cd5b05eeea61ebf709695ca695e:/doc/local.mk

diff --git a/doc/local.mk b/doc/local.mk
index 15a232f8..d1397904 100644
--- a/doc/local.mk
+++ b/doc/local.mk
@@ -1,4 +1,3 @@
-## Process this file with automake to produce Makefile.in -*-Makefile-*-
 ## Copyright (C) 2001, 2002, 2003, 2005, 2006, 2007, 2008 Free Software
 ## Foundation, Inc.
 
@@ -30,9 +29,12 @@ clean-local:
 CROSS_OPTIONS_PL = $(top_srcdir)/build-aux/cross-options.pl
 CROSS_OPTIONS_TEXI = $(top_srcdir)/doc/cross-options.texi
 $(CROSS_OPTIONS_TEXI): $(top_srcdir)/src/getargs.c $(CROSS_OPTIONS_PL)
-	-rm -f $@ $@.tmp
-	$(MAKE) $(AM_MAKEFLAGS) src/bison
-	$(top_builddir)/src/bison --help | perl $(CROSS_OPTIONS_PL) >$@.tmp
+	mv -f $@ $@~ || : >$@~
+	-rm -f $@.tmp
+	$(MAKE) $(AM_MAKEFLAGS) src/bison$(EXEEXT)
+	$(top_builddir)/src/bison --help |				\
+	perl $(CROSS_OPTIONS_PL) $(top_srcdir)/src/scan-gram.l >$@.tmp
+	diff -u $@~ $@.tmp || true
 	mv $@.tmp $@
 MAINTAINERCLEANFILES = $(CROSS_OPTIONS_TEXI)