linux-kernel - [PATCH] perf: fix 'make help' message error

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Message-Id: <1400993449-24094-1-git-send-email-nasa4836@gmail.com>
Date:	Sun, 25 May 2014 12:50:49 +0800
From:	Jianyu Zhan <nasa4836@...il.com>
To:	a.p.zijlstra@...llo.nl, paulus@...ba.org, mingo@...hat.com,
	acme@...nel.org
Cc:	linux-kernel@...r.kernel.org, nasa4836@...il.com
Subject: [PATCH] perf: fix 'make help' message error

Currently 'make help' message has such hint:

   use "make prefix=<path> <install target>" to install to a particular
       path like make prefix=/usr/local install install-doc

But this is misleading, when I specify "prefix=/usr/local", it has got no
respect at all. Instead, what takes effect is the "DESTDIR" variable.
In this case, "DESTDIR" has a empty value, so the actual install
directory falls back $HOME, not '/usr/local'.

Specifying "DESTDIR=/usr/local" will work as desired.

This patch fixes the help message.

Signed-off-by: Jianyu Zhan <nasa4836@...il.com>
---
 tools/perf/Makefile.perf | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 895edd3..37c5f90 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -784,8 +784,8 @@ help:
 	@echo ''
 	@echo 'Perf install targets:'
 	@echo '  NOTE: documentation build requires asciidoc, xmlto packages to be installed'
-	@echo '  HINT: use "make prefix=<path> <install target>" to install to a particular'
-	@echo '        path like make prefix=/usr/local install install-doc'
+	@echo '  HINT: use "make DESTDIR=<path> <install target>" to install to a particular'
+	@echo '        path like "make DESTDIR=/usr/local install install-doc"'
 	@echo '  install	- install compiled binaries'
 	@echo '  install-doc	- install *all* documentation'
 	@echo '  install-man	- install manpage documentation'
-- 
2.0.0-rc3

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