lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20131008084610.GB3295@gmail.com>
Date:	Tue, 8 Oct 2013 10:46:10 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	David Ahern <dsahern@...il.com>
Subject: Re: [PATCH 37/50] tools/perf/build: Improve printout-of
 auto-detected features


* Jiri Olsa <jolsa@...hat.com> wrote:

> On Mon, Oct 07, 2013 at 01:56:30PM +0200, Ingo Molnar wrote:
> 
> SNIP
> 
> > +#
> > +# Only print out our features if we rebuilt the testcases or if a test failed:
> > +#
> > +ifeq ($(test-all-failed), 1)
> > +  $(foreach feat,$(CORE_FEATURE_TESTS) DUMMY,$(call feature_print,$(feat)))
> > +  $(info )
> > +endif
> 
> found the DUMMY! what do I win? ;-)

:-)

So, this is a bit of a GNU Make mystery to me. If I have a failure for at 
least one of the features, and if I leave out that DUMMY then I get this 
printout:

...                       libperl: [ OFF ]
...                     libpython: [ on  ]
...             libpython-version: [ on  ]
...                      libslang: [ on  ]
...                     libunwind: [ on  ]
...                       on-exit: [ on  ]
...                stackprotector: [ on  ]
...            stackprotector-all: [ on  ]

    GEN python/perf.so

Note how the last entry is missing: volatile-register-var.

If I add the DUMMY I get the full printout:

...                       libperl: [ OFF ]
...                     libpython: [ on  ]
...             libpython-version: [ on  ]
...                      libslang: [ on  ]
...                     libunwind: [ on  ]
...                       on-exit: [ on  ]
...                stackprotector: [ on  ]
...            stackprotector-all: [ on  ]
...         volatile-register-var: [ on  ]

    GEN python/perf.so

Somehow GNU Make appears to be eating terminal ouput - or I might have 
misunderstood something.

I hope it's the latter - but if it's the former then the DUMMY entry is 
needed :-/

Thanks,

	Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ