linux-kernel - Re: [PATCH v3 5/9] perf build: Add feature-dump target

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Date:	Fri, 15 Jan 2016 16:11:39 -0300
From:	Arnaldo Carvalho de Melo <acme@...nel.org>
To:	Wang Nan <wangnan0@...wei.com>
Cc:	jolsa@...hat.com, linux-kernel@...r.kernel.org, pi3orama@....com,
	lizefan@...wei.com, Jiri Olsa <jolsa@...nel.org>
Subject: Re: [PATCH v3 5/9] perf build: Add feature-dump target

Em Fri, Jan 15, 2016 at 04:00:17AM +0000, Wang Nan escreveu:
> From: Jiri Olsa <jolsa@...nel.org>
> 
> To provide FEATURE-DUMP into $(FEATURE_DUMP_COPY)
> if defined, with no further action.
> 
> Get feature dump of the current build:
>   $ make feature-dump
>     BUILD:   Doing 'make -j4' parallel build
> 
>   Auto-detecting system features:
>   ...                         dwarf: [ on  ]
> 
>   FEATURE-DUMP file available in FEATURE-DUMP

Trying to improve this, i.e. provide an absolute or relative path to where
the file is really generated.

[acme@zoo linux]$ make -C tools/perf feature-dump
make: Entering directory '/home/git/linux/tools/perf'
  BUILD:   Doing 'make -j4' parallel build

Auto-detecting system features:
...                         dwarf: [ on  ]
...                         glibc: [ on  ]
...                          gtk2: [ on  ]
...                      libaudit: [ on  ]
...                        libbfd: [ on  ]
...                        libelf: [ on  ]
...                       libnuma: [ on  ]
...        numa_num_possible_cpus: [ on  ]
...                       libperl: [ on  ]
...                     libpython: [ on  ]
...                      libslang: [ on  ]
...                     libunwind: [ on  ]
...            libdw-dwarf-unwind: [ on  ]
...                          zlib: [ on  ]
...                          lzma: [ on  ]
...                     get_cpuid: [ on  ]
...                           bpf: [ on  ]

FEATURE-DUMP file available in FEATURE-DUMP
make: Leaving directory '/home/git/linux/tools/perf'
[acme@zoo linux]$ cat FEATURE-DUMP
cat: FEATURE-DUMP: No such file or directory
[acme@zoo linux]$ find . -name FEATURE-DUMP
./tools/perf/FEATURE-DUMP
[acme@zoo linux]$