linux-kernel - Re: [PATCH] Re: 'make headers_check' failed to install headers to arbitrary location

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Date:	Fri, 5 Jun 2009 16:11:09 +0400
From:	Sergei Poselenov <sposelenov@...raft.com>
To:	Wolfgang Denk <wd@...x.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Re: 'make headers_check' failed to install headers to
 arbitrary location

On Thu, 04 Jun 2009 19:07:15 +0200
Dear Wolfgang,

Wolfgang Denk <wd@...x.de> wrote:

> Why not simply:
> 
> 	for f in $(all-files); do
> 		echo "$(install)/$${f}"
> 	done | xargs $(PERL) ...
> 
> ?
> 

Ah,right, I missed this.

Here is the modified version of the patch, tested on 2.6.30-rc8,
ARCH=arm

Subject: [PATCH] Fixed the "Argument list too long" error for "make headers_check",
 used xargs to minimize the perl calls.

Signed-off-by: Sergei Poselenov <sposelenov@...raft.com>
---
 scripts/Makefile.headersinst |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/scripts/Makefile.headersinst b/scripts/Makefile.headersinst
index 095cfc8..0fcd838 100644
--- a/scripts/Makefile.headersinst
+++ b/scripts/Makefile.headersinst
@@ -54,8 +54,12 @@ quiet_cmd_remove = REMOVE  $(unwanted)
       cmd_remove = rm -f $(unwanted-file)
 
 quiet_cmd_check = CHECK   $(printdir) ($(words $(all-files)) files)
-      cmd_check = $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH) \
-                  $(addprefix $(install)/, $(all-files));           \
+# Headers list can be pretty long, xargs helps to avoid
+# the "Argument list too long" error.
+      cmd_check = for f in $(all-files); do                          \
+                  echo "$(install)/$${f}"; done                      \
+                  | xargs                                            \
+                  $(PERL) $< $(INSTALL_HDR_PATH)/include $(SRCARCH); \
 	          touch $@
 
 PHONY += __headersinst __headerscheck
-- 
1.6.0.6

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