$NetBSD: patch-libguile_Makefile.in,v 1.3 2025/03/30 07:48:46 wiz Exp $

Fix date stamp.
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=26121

--- libguile/Makefile.in.orig	2025-03-21 08:17:26.316525800 +0000
+++ libguile/Makefile.in
@@ -4256,7 +4256,7 @@ libpath.h: $(srcdir)/Makefile.in  $(top_
 	@echo '	{ "LIBS",	   "@GUILE_LIBS@" }, \' >> libpath.tmp
 	@echo '	{ "CFLAGS",	   "@GUILE_CFLAGS@" }, \' >> libpath.tmp
 	@BUILD_DATE="$${SOURCE_DATE_EPOCH:-`date '+%s'`}" ; \
-	 echo '	{ "buildstamp",    "'`date -u +'%Y-%m-%d %T' -d @$$BUILD_DATE`'" }, \' >> libpath.tmp
+	 echo '	{ "buildstamp",    "'`date -u -d @$$BUILD_DATE +'%Y-%m-%d %T'`'" }, \' >> libpath.tmp
 	@echo '}' >> libpath.tmp
 	$(AM_V_GEN)mv libpath.tmp libpath.h