[PATCH v1 0/3] Support perf -vv

[Jin Yao]

We keep having bug reports that when users build perf on their own,
but they don't install some needed libraries such as libelf,
libbfd/libibery.

The perf can build, but it is missing important functionality. And
users may complain that perf has issue or bug. 

This patch-set support 'perf -vv' which will print the compiled-in
status of libraries. Once users think perf missing some functionality,
it should be very easy for them to check the libraries status.

For example:

$ ./perf -vv
perf version 4.13.rc5.g9b7a81b
                 dwarf: [  on ]
    dwarf_getlocations: [  on ]
                 glibc: [  on ]
                  gtk2: [  on ]
              libaudit: [ off ]
                libbfd: [  on ]
                libelf: [  on ]
               libnuma: [  on ]
numa_num_possible_cpus: [  on ]
               libperl: [  on ]
             libpython: [  on ]
              libslang: [  on ]
             libcrypto: [  on ]
             libunwind: [  on ]
    libdw-dwarf-unwind: [  on ]
                  zlib: [  on ]
                  lzma: [  on ]
             get_cpuid: [  on ]
                   bpf: [  on ]

Jin Yao (3):
  perf config: Add -DNO_GLIBC to CFLAGS
  perf version: Print the status of compiled-in libraries
  perf: Support perf -vv

 tools/perf/Makefile.config   |   2 +
 tools/perf/builtin-version.c | 125 +++++++++++++++++++++++++++++++++++++++++++
 tools/perf/builtin.h         |   1 +
 tools/perf/perf.c            |   6 +++
 4 files changed, 134 insertions(+)

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2.7.4