linux-kernel - Re: [PATCH 02/14] perf tools: Add feature check for lzma library

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Date:	Tue, 3 Mar 2015 12:50:30 -0300
From:	Arnaldo Carvalho de Melo <acme@...hat.com>
To:	Jiri Olsa <jolsa@...nel.org>
Cc:	linux-kernel@...r.kernel.org,
	Adrian Hunter <adrian.hunter@...el.com>,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...nel.org>,
	Namhyung Kim <namhyung@...nel.org>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Stephane Eranian <eranian@...gle.com>, acme@...nel.org
Subject: Re: [PATCH 02/14] perf tools: Add feature check for lzma library

Em Tue, Mar 03, 2015 at 04:29:29PM +0100, Jiri Olsa escreveu:
> Will be used to decompress 'xz' objects. The check detects
> the liblzma.so devel library normally delivered by xz package.

Hey, don't we want to emit some warning like the one below for CTF/libunwind?

- Arnaldo

[perf/core 1b23d3ab8304] perf tools: Add feature check for lzma library
 Author: Jiri Olsa <jolsa@...nel.org>
 3 files changed, 19 insertions(+), 3 deletions(-)
 create mode 100644 tools/perf/config/feature-checks/test-lzma.c
[acme@...andy linux]$ fg
-bash: fg: current: no such job
[acme@...andy linux]$  time make O=/tmp/build/perf -C tools/perf install-bin
make: Entering directory `/home/acme/git/linux/tools/perf'
  BUILD:   Doing 'make -j8' parallel build
config/Makefile:427: No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR
config/Makefile:711: No libbabeltrace found, disables 'perf data' CTF format support, please install libbabeltrace-dev[el]/libbabeltrace-ctf-dev

Auto-detecting system features:
...                         dwarf: [ on  ]
...                         glibc: [ on  ]
...                          gtk2: [ on  ]
...                      libaudit: [ on  ]
...                        libbfd: [ on  ]
...                        libelf: [ on  ]
...                       libnuma: [ on  ]
...                       libperl: [ on  ]
...                     libpython: [ on  ]
...                      libslang: [ on  ]
...                     libunwind: [ OFF ]
...            libdw-dwarf-unwind: [ on  ]
...                 libbabeltrace: [ OFF ]
...                          zlib: [ on  ]
...                          lzma: [ OFF ]
...     DWARF post unwind library: libdw

  INSTALL  GTK UI
  INSTALL  binaries
  INSTALL  libexec
  INSTALL  perf-archive
  INSTALL  perf-with-kcore
  INSTALL  perl-scripts
  INSTALL  python-scripts
  INSTALL  perf_completion-script
  INSTALL  tests
make: Leaving directory `/home/acme/git/linux/tools/perf'

real	0m3.818s
user	0m3.087s
sys	0m0.970s
[acme@...andy linux]$ 
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