linux-kernel - Re: [PATCH 34/34] perf tools unwinding: Use the per-feature check flags

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Message-ID: <20131127224323.GB1350@krava.redhat.com>
Date:	Wed, 27 Nov 2013 23:43:24 +0100
From:	Jiri Olsa <jolsa@...hat.com>
To:	Arnaldo Carvalho de Melo <acme@...radead.org>
Cc:	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
	Jean Pihet <jean.pihet@...aro.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Will Deacon <will.deacon@....com>,
	linaro-kernel@...ts.linaro.org, patches@...aro.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>
Subject: Re: [PATCH 34/34] perf tools unwinding: Use the per-feature check
 flags

On Wed, Nov 27, 2013 at 05:16:34PM -0300, Arnaldo Carvalho de Melo wrote:
> From: Jean Pihet <jean.pihet@...aro.org>
> 
> Use the per-feature check flags for the unwinding feature in order to
> correctly compile the libunwind and libunwind-debug-frame feature
> checks.
> 
> Tested on ARMv7 and ARMv8 with 'make DEBUG=1 LIBUNWIND_DIR=/usr/local -C
> tools/perf'

this one makes my build fail:

[jolsa@...va perf]$ make
  BUILD:   Doing 'make -j4' parallel build

Auto-detecting system features:
...                     backtrace: [ on  ]
...                         dwarf: [ on  ]
...                fortify-source: [ on  ]
...                         glibc: [ on  ]
...                          gtk2: [ on  ]
...                  gtk2-infobar: [ on  ]
...                      libaudit: [ on  ]
...                        libbfd: [ on  ]
...                        libelf: [ on  ]
...             libelf-getphdrnum: [ on  ]
...                   libelf-mmap: [ on  ]
...                       libnuma: [ on  ]
...                       libperl: [ on  ]
...                     libpython: [ on  ]
...             libpython-version: [ on  ]
...                      libslang: [ on  ]
...                     libunwind: [ OFF ]
...                       on-exit: [ on  ]
...                stackprotector: [ on  ]
...            stackprotector-all: [ on  ]
...                       timerfd: [ on  ]

config/Makefile:335: No libunwind found, disabling post unwind support. Please install libunwind-dev[el] >= 1.1

...

  LINK     perf
/bin/ld: cannot find -lunwind
/bin/ld: cannot find -lunwind-x86_64
collect2: error: ld returned 1 exit status
make[1]: *** [perf] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [all] Error 2


I haven't checked this one.. will do tomorrow

jirka
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