[PATCH] perf: fix 'make help' message error

[PATCH] perf: fix 'make help' message error

[Jianyu Zhan]

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@gmail.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

Re: [PATCH] perf: fix 'make help' message error

[Namhyung Kim]

Hi Jianyu,

On Sun, 25 May 2014 12:50:49 +0800, Jianyu Zhan wrote:
> 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.

I don't know what's the correct way to do this.  But it seems like the
prefix was overwritten when given from user, so below patch will work
also.

Thanks,
Namhyung


diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 729bbdf5cec7..80a8a0a1c7e7 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -599,7 +599,7 @@ endif
 
 # Make the path relative to DESTDIR, not to prefix
 ifndef DESTDIR
-prefix = $(HOME)
+prefix ?= $(HOME)
 endif
 bindir_relative = bin
 bindir = $(prefix)/$(bindir_relative)

Re: [PATCH] perf: fix 'make help' message error

[Jianyu Zhan]

Hi, Namhyung,

>I don't know what's the correct way to do this.  But it seems like the
>prefix was overwritten when given from user, so below patch will work
>also.

This does work too. So I update the patch as below:

---8<---
From: Jianyu Zhan <nasa4836@gmail.com>
Date: Sat, 24 May 2014 22:34:26 +0800
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.

This is because that, "DESTDIR" is condiered first. In this case, "DESTDIR"
has an empty value, so "prefix" is honored. However, "prefix" is unconditionally
assigned to $HOME, regardless of what it is set to from command line. So our
"prefix" setting got no respect and the actual destination falls back to $HOME.

This patch fixes this issue and corrects the help message.

Signed-off-by: Jianyu Zhan <nasa4836@gmail.com>
---
 tools/perf/Makefile.perf   | 4 ++--
 tools/perf/config/Makefile | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 895edd3..5918063 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 "prefix" or "DESTDIR" to install to a particular'
+	@echo '        path like "make prefix=/usr/local install install-doc"'
 	@echo '  install	- install compiled binaries'
 	@echo '  install-doc	- install *all* documentation'
 	@echo '  install-man	- install manpage documentation'
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 802cf54..53dc11e 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -601,7 +601,7 @@ endif
 
 # Make the path relative to DESTDIR, not to prefix
 ifndef DESTDIR
-prefix = $(HOME)
+prefix ?= $(HOME)
 endif
 bindir_relative = bin
 bindir = $(prefix)/$(bindir_relative)
-- 
2.0.0

Re: [PATCH] perf: fix 'make help' message error

[Jianyu Zhan]

On Tue, Jun 3, 2014 at 12:44 AM, Jianyu Zhan <nasa4836@gmail.com> wrote:
> Hi, Namhyung,
>
>>I don't know what's the correct way to do this.  But it seems like the
>>prefix was overwritten when given from user, so below patch will work
>>also.
>
> This does work too. So I update the patch as below:
>
> ---8<---
> From: Jianyu Zhan <nasa4836@gmail.com>
> Date: Sat, 24 May 2014 22:34:26 +0800
> 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.
>
> This is because that, "DESTDIR" is condiered first. In this case, "DESTDIR"
> has an empty value, so "prefix" is honored. However, "prefix" is unconditionally
> assigned to $HOME, regardless of what it is set to from command line. So our
> "prefix" setting got no respect and the actual destination falls back to $HOME.
>
> This patch fixes this issue and corrects the help message.
>
> Signed-off-by: Jianyu Zhan <nasa4836@gmail.com>
> ---
>  tools/perf/Makefile.perf   | 4 ++--
>  tools/perf/config/Makefile | 2 +-
>  2 files changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
> index 895edd3..5918063 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 "prefix" or "DESTDIR" to install to a particular'
> +       @echo '        path like "make prefix=/usr/local install install-doc"'
>         @echo '  install        - install compiled binaries'
>         @echo '  install-doc    - install *all* documentation'
>         @echo '  install-man    - install manpage documentation'
> diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
> index 802cf54..53dc11e 100644
> --- a/tools/perf/config/Makefile
> +++ b/tools/perf/config/Makefile
> @@ -601,7 +601,7 @@ endif
>
>
>  # Make the path relative to DESTDIR, not to prefix
>  ifndef DESTDIR
> -prefix = $(HOME)
> +prefix ?= $(HOME)
>  endif
>  bindir_relative = bin
>  bindir = $(prefix)/$(bindir_relative)

Cc Namyung with a correct email...


Thanks,
Jianyu Zhan

Re: [PATCH] perf: fix 'make help' message error

[Namhyung Kim]

Hi Jianyu,

On Tue, 3 Jun 2014 00:53:16 +0800, Jianyu Zhan wrote:
> On Tue, Jun 3, 2014 at 12:44 AM, Jianyu Zhan <nasa4836@gmail.com> wrote:
>> Hi, Namhyung,
>>
>>>I don't know what's the correct way to do this.  But it seems like the
>>>prefix was overwritten when given from user, so below patch will work
>>>also.
>>
>> This does work too. So I update the patch as below:
>>
>> ---8<---
>> From: Jianyu Zhan <nasa4836@gmail.com>
>> Date: Sat, 24 May 2014 22:34:26 +0800
>> 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.
>>
>> This is because that, "DESTDIR" is condiered first. In this case, "DESTDIR"

s/condiered/considered/ ?


>> has an empty value, so "prefix" is honored. However, "prefix" is unconditionally
>> assigned to $HOME, regardless of what it is set to from command line. So our
>> "prefix" setting got no respect and the actual destination falls back to $HOME.
>>
>> This patch fixes this issue and corrects the help message.

With that changed,

Acked-by: Namhyung Kim <namhyung@kernel.org>

Thanks,
Namhyung


>> ---
>>  tools/perf/Makefile.perf   | 4 ++--
>>  tools/perf/config/Makefile | 2 +-
>>  2 files changed, 3 insertions(+), 3 deletions(-)
>>
>> diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
>> index 895edd3..5918063 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 "prefix" or "DESTDIR" to install to a particular'
>> +       @echo '        path like "make prefix=/usr/local install install-doc"'
>>         @echo '  install        - install compiled binaries'
>>         @echo '  install-doc    - install *all* documentation'
>>         @echo '  install-man    - install manpage documentation'
>> diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
>> index 802cf54..53dc11e 100644
>> --- a/tools/perf/config/Makefile
>> +++ b/tools/perf/config/Makefile
>> @@ -601,7 +601,7 @@ endif
>>
>>
>>  # Make the path relative to DESTDIR, not to prefix
>>  ifndef DESTDIR
>> -prefix = $(HOME)
>> +prefix ?= $(HOME)
>>  endif
>>  bindir_relative = bin
>>  bindir = $(prefix)/$(bindir_relative)
>
> Cc Namyung with a correct email...
>
>
> Thanks,
> Jianyu Zhan

Re: [PATCH] perf: fix 'make help' message error

[Jianyu Zhan]

Hi, Namhyung,

On Tue, Jun 3, 2014 at 10:51 AM, Namhyung Kim <namhyung@gmail.com> wrote:
>
> s/condiered/considered/ ?
>
>

Oops, sorry for the typo.

>>> has an empty value, so "prefix" is honored. However, "prefix" is unconditionally
>>> assigned to $HOME, regardless of what it is set to from command line. So our
>>> "prefix" setting got no respect and the actual destination falls back to $HOME.
>>>
>>> This patch fixes this issue and corrects the help message.
>
> With that changed,
>
> Acked-by: Namhyung Kim <namhyung@kernel.org>

Thanks. I renew the patch for maintainers to pick up.

-----8<-----
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.

This is because that, "DESTDIR" is considered first. In this case, "DESTDIR"
has an empty value, so "prefix" is honored. However, "prefix" is unconditionally
assigned to $HOME, regardless of what it is set to from command line. So our
"prefix" setting got no respect and the actual destination falls back to $HOME.

This patch fixes this issue and corrects the help message.

Acked-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Jianyu Zhan <nasa4836@gmail.com>
---
 tools/perf/Makefile.perf   | 4 ++--
 tools/perf/config/Makefile | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 895edd3..5918063 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 "prefix" or "DESTDIR" to install to a particular'
+	@echo '        path like "make prefix=/usr/local install install-doc"'
 	@echo '  install	- install compiled binaries'
 	@echo '  install-doc	- install *all* documentation'
 	@echo '  install-man	- install manpage documentation'
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 802cf54..53dc11e 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -601,7 +601,7 @@ endif
 
 # Make the path relative to DESTDIR, not to prefix
 ifndef DESTDIR
-prefix = $(HOME)
+prefix ?= $(HOME)
 endif
 bindir_relative = bin
 bindir = $(prefix)/$(bindir_relative)
-- 
2.0.0

Re: [PATCH] perf: fix 'make help' message error

[Jiri Olsa]

On Tue, Jun 03, 2014 at 11:10:31AM +0800, Jianyu Zhan wrote:
> Hi, Namhyung,
> 
> On Tue, Jun 3, 2014 at 10:51 AM, Namhyung Kim <namhyung@gmail.com> wrote:
> >
> > s/condiered/considered/ ?
> >
> >
> 
> Oops, sorry for the typo.
> 
> >>> has an empty value, so "prefix" is honored. However, "prefix" is unconditionally
> >>> assigned to $HOME, regardless of what it is set to from command line. So our
> >>> "prefix" setting got no respect and the actual destination falls back to $HOME.
> >>>
> >>> This patch fixes this issue and corrects the help message.
> >
> > With that changed,
> >
> > Acked-by: Namhyung Kim <namhyung@kernel.org>
> 
> Thanks. I renew the patch for maintainers to pick up.

queued.. thanks,

jirka

[tip:perf/core] perf tools: Fix 'make help' message error

[tip-bot for Jianyu Zhan]

Commit-ID:  fc9cabeabf42d76854059e7bce81a02645e7e5ca
Gitweb:     http://git.kernel.org/tip/fc9cabeabf42d76854059e7bce81a02645e7e5ca
Author:     Jianyu Zhan <nasa4836@gmail.com>
AuthorDate: Tue, 3 Jun 2014 00:44:34 +0800
Committer:  Jiri Olsa <jolsa@kernel.org>
CommitDate: Tue, 3 Jun 2014 21:35:12 +0200

perf tools: 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.

This is because that, "DESTDIR" is considered first. In this case, "DESTDIR"
has an empty value, so "prefix" is honored. However, "prefix" is unconditionally
assigned to $HOME, regardless of what it is set to from command line. So our
"prefix" setting got no respect and the actual destination falls back to $HOME.

This patch fixes this issue and corrects the help message.

Signed-off-by: Jianyu Zhan <nasa4836@gmail.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1401727474-19370-1-git-send-email-nasa4836@gmail.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 tools/perf/Makefile.perf   | 4 ++--
 tools/perf/config/Makefile | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 6286e13..ae20edf 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -789,8 +789,8 @@ 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 "prefix" or "DESTDIR" to install to a particular'
+	@echo '        path like "make prefix=/usr/local install install-doc"'
 	@echo '  install	- install compiled binaries'
 	@echo '  install-doc	- install *all* documentation'
 	@echo '  install-man	- install manpage documentation'
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 319426f..4f100b5 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -600,7 +600,7 @@ endif
 
 # Make the path relative to DESTDIR, not to prefix
 ifndef DESTDIR
-prefix = $(HOME)
+prefix ?= $(HOME)
 endif
 bindir_relative = bin
 bindir = $(prefix)/$(bindir_relative)

[PATCH] perf: fix 'make help' message error

[Jianyu Zhan]

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@gmail.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