From b655a2154e96e3d62210e4f5e1b51a668da63091 Mon Sep 17 00:00:00 2001
From: Jim Meyering <jim@meyering.net>
Date: Fri, 2 Mar 2007 11:13:54 +0100
Subject: [PATCH] * Makefile.maint (my-distcheck): Skip the c99/c89 check if
 there's no such .diff file.

---
 ChangeLog      |  1 +
 Makefile.maint | 12 +++++++-----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 322de83728..17c5c07391 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,6 +3,7 @@
 	Remove another coreutils-ism.  Formatting cleanup.
 	* Makefile.maint (my-distcheck): Update an outdated comment.
 	(emit_upload_commands): Use $(PACKAGE) rather than "coreutils".
+	(my-distcheck): Skip the c99/c89 check if there's no such .diff file.
 
 2007-03-01  Jim Meyering  <jim@meyering.net>
 
diff --git a/Makefile.maint b/Makefile.maint
index 34e2d840b4..0d86c6c23b 100644
--- a/Makefile.maint
+++ b/Makefile.maint
@@ -536,11 +536,13 @@ my-distcheck: $(local-check) $(release_archive_dir)/$(prev-tgz)
 	(cd $(t) && mv $(distdir) $(distdir).old	\
 	  && $(AMTAR) -zxf - ) < $(distdir).tar.gz
 	diff -ur $(t)/$(distdir).old $(t)/$(distdir)
-	cd $(t)/$(distdir)				\
-	  && (cd src && patch -V never --fuzz=0 <c99-to-c89.diff) \
-	  && ./configure --disable-largefile		\
-	       CFLAGS='-Werror -ansi -pedantic -Wno-long-long' \
-	  && $(MAKE)
+	if test -f $(srcdir)/src/c99-to-c89.diff; then			\
+	  cd $(t)/$(distdir)						\
+	    && (cd src && patch -V never --fuzz=0 <c99-to-c89.diff)	\
+	    && ./configure --disable-largefile				\
+	         CFLAGS='-Werror -ansi -pedantic -Wno-long-long'	\
+	    && $(MAKE);							\
+	fi
 	-rm -rf $(t)
 	@echo "========================"; \
 	echo "$(distdir).tar.gz is ready for distribution"; \
-- 
2.39.5