From 8934c3f68e0ba949edd38673f10b9943059e4938 Mon Sep 17 00:00:00 2001
From: Stefan Metzmacher <metze@samba.org>
Date: Tue, 17 Apr 2007 13:48:12 +0000
Subject: r22307: when no lex or yacc is found: - just touch $DEST if it's
 already there and newer than $SRC - touch $DEST if it's already there but
 older than $SRC and print warnings   to stderr - otherwise return an error

when lex or yacc is found:
- just touch $DEST if it's already there and newer than $SRC
- otherwise regenerate $DEST from $SRC using lex or yacc

I don't like that every 'make' tries to regenerate because the timestamp
of $DEST is never updated...

metze
(This used to be commit 10ed5c39692ff4a6b61ec9c6d046b2ee2202fc02)
---
 source4/script/lex_compile.sh  | 16 ++++++++++++++--
 source4/script/yacc_compile.sh | 18 +++++++++++++++---
 2 files changed, 29 insertions(+), 5 deletions(-)

(limited to 'source4/script')

diff --git a/source4/script/lex_compile.sh b/source4/script/lex_compile.sh
index 064bf89bea..2f9498e5ac 100755
--- a/source4/script/lex_compile.sh
+++ b/source4/script/lex_compile.sh
@@ -8,11 +8,23 @@ dir=`dirname $SRC`
 file=`basename $SRC`
 base=`basename $SRC .l`
 if [ -z "$LEX" ]; then
-	echo "lex not found - not regenerating $DEST"
-	exit;
+	# if $DEST is more recent than $SRC, we can just touch
+	# otherwise we touch but print out warnings
+	if [ -r $DEST ]; then
+		if [ x`find $SRC -newer $DEST -print` = x$SRC ]; then
+			echo "warning: lex not found - cannot generate $SRC => $DEST" >&2
+			echo "warning: lex not found - only updating the timestamp of $DEST" >&2
+		fi
+		touch $DEST;
+		exit;
+	fi
+	echo "error: lex not found - cannot generate $SRC => $DEST" >&2
+	exit 1;
 fi
+# if $DEST is more recent than $SRC, we can just touch
 if [ -r $DEST ]; then
 	if [ x`find $SRC -newer $DEST -print` != x$SRC ]; then
+		touch $DEST;
 		exit;
 	fi
 fi
diff --git a/source4/script/yacc_compile.sh b/source4/script/yacc_compile.sh
index 87d9807fc6..c82ef6d686 100755
--- a/source4/script/yacc_compile.sh
+++ b/source4/script/yacc_compile.sh
@@ -8,18 +8,30 @@ dir=`dirname $SRC`
 file=`basename $SRC`
 base=`basename $SRC .y`
 if [ -z "$YACC" ]; then
-	echo "yacc not found"
-	exit;
+	# if $DEST is more recent than $SRC, we can just touch
+	# otherwise we touch but print out warnings
+	if [ -r $DEST ]; then
+		if [ x`find $SRC -newer $DEST -print` = x$SRC ]; then
+			echo "warning: yacc not found - cannot generate $SRC => $DEST" >&2
+			echo "warning: yacc not found - only updating the timestamp of $DEST" >&2
+		fi
+		touch $DEST;
+		exit;
+	fi
+	echo "error: yacc not found - cannot generate $SRC => $DEST" >&2
+	exit 1;
 fi
+# if $DEST is more recent than $SRC, we can just touch
 if [ -r $DEST ]; then
 	if [ x`find $SRC -newer $DEST -print` != x$SRC ]; then
+		touch $DEST;
 		exit;
 	fi
 fi
 TOP=`pwd`
 if cd $dir && $YACC -d $file; then
 	if [ -r y.tab.h -a -r y.tab.c ];then
-		echo "move files"
+		#echo "info: move files"
 		sed -e "/^#/!b" -e "/^#/ s|y\.tab\.h|$SRC|" -e "/^#/ s|\"$base.y|\"$SRC|"  y.tab.h > $base.h
 		sed -e "/^#/ s|y\.tab\.c|$SRC|" -e "/^#/ s|\"$base.y|\"$SRC|" y.tab.c > $base.c
 		rm -f y.tab.c y.tab.h
-- 
cgit