linux-kernel - [Patch] kbuild: fix a build error during make htmldocs

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Message-Id: <20090619070909.6422.28484.sendpatchset@localhost.localdomain>
Date:	Fri, 19 Jun 2009 03:06:54 -0400
From:	Amerigo Wang <amwang@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	randy.dunlap@...cle.com, akpm@...ux-foundation.org,
	sam@...nborg.org, Amerigo Wang <amwang@...hat.com>,
	jirislaby@...il.com
Subject: [Patch] kbuild: fix a build error during make htmldocs


Fix the following build error when do 'make htmldocs':

 DOCPROC Documentation/DocBook/debugobjects.xml
exec /scripts/kernel-doc: No such file or directory
exec /scripts/kernel-doc: No such file or directory

Reported-by: Randy Dunlap <randy.dunlap@...cle.com>
Signed-off-by: WANG Cong <amwang@...hat.com>
Cc: Sam <sam@...nborg.org>
Acked-by: Randy Dunlap <randy.dunlap@...cle.com>

---
diff --git a/scripts/basic/docproc.c b/scripts/basic/docproc.c
index 4c9523e..99ca7a6 100644
--- a/scripts/basic/docproc.c
+++ b/scripts/basic/docproc.c
@@ -385,7 +385,7 @@ int main(int argc, char *argv[])
 	if (!srctree)
 		srctree = getcwd(NULL, 0);
 	kernsrctree = getenv("KBUILD_SRC");
-	if (!kernsrctree)
+	if (!kernsrctree || !*kernsrctree)
 		kernsrctree = srctree;
 	if (argc != 3) {
 		usage();
--
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