linux-kernel - Re: [PATCH v2 3/4] perf version: Print the compiled-in status of libraries

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Date:   Wed, 28 Mar 2018 21:57:43 +0800
From:   "Jin, Yao" <yao.jin@...ux.intel.com>
To:     Jiri Olsa <jolsa@...hat.com>
Cc:     acme@...nel.org, jolsa@...nel.org, peterz@...radead.org,
        mingo@...hat.com, alexander.shishkin@...ux.intel.com,
        Linux-kernel@...r.kernel.org, ak@...ux.intel.com,
        kan.liang@...el.com, yao.jin@...el.com
Subject: Re: [PATCH v2 3/4] perf version: Print the compiled-in status of
 libraries



On 3/28/2018 9:10 PM, Jiri Olsa wrote:
> On Wed, Mar 28, 2018 at 10:57:07PM +0800, Jin Yao wrote:
> 
> SNIP
> 
>> +
>> +static void library_status(void)
>> +{
>> +	STATUS(HAVE_DWARF_SUPPORT, dwarf);
>> +	STATUS(HAVE_DWARF_GETLOCATIONS, dwarf_getlocations);
>> +	STATUS(HAVE_GLIBC_SUPPORT, glibc);
>> +	STATUS(HAVE_GTK2_SUPPORT, gtk2);
>> +	STATUS(HAVE_LIBAUDIT_SUPPORT, libaudit);
>> +	STATUS(HAVE_LIBBFD_SUPPORT, libbfd);
>> +	STATUS(HAVE_LIBELF_SUPPORT, libelf);
>> +	STATUS(HAVE_LIBNUMA_SUPPORT, libnuma);
>> +	STATUS(HAVE_LIBNUMA_SUPPORT, numa_num_possible_cpus);
>> +	STATUS(HAVE_LIBPERL_SUPPORT, libperl);
>> +	STATUS(HAVE_LIBPYTHON_SUPPORT, libpython);
>> +	STATUS(HAVE_SLANG_SUPPORT, libslang);
>> +	STATUS(HAVE_LIBCRYPTO_SUPPORT, libcrypto);
>> +	STATUS(HAVE_LIBUNWIND_SUPPORT, libunwind);
>> +	STATUS(HAVE_DWARF_SUPPORT, libdw-dwarf-unwind);
>> +	STATUS(HAVE_ZLIB_SUPPORT, zlib);
>> +	STATUS(HAVE_LZMA_SUPPORT, lzma);
>> +	STATUS(HAVE_AUXTRACE_SUPPORT, get_cpuid);
>> +	STATUS(HAVE_LIBBPF_SUPPORT, bpf);
>> +
>> +	on_off_print("on");
>> +	printf(": library is compiled-in\n");
>> +
>> +	on_off_print("OFF");
>> +	printf(": library is disabled in make configuration\n");
>> +	printf("         OR library is not installed in build environment\n");
> 
> [jolsa@...va perf]$ ./perf -vv
> perf version 4.16.rc6.gcc183d
>                   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  ]
> [ on  ]: library is compiled-in
> [ OFF ]: library is disabled in make configuration
>           OR library is not installed in build environment
> 
> did anyone asked for this ^^^ help messages? I don't think they are necessary
> 
> jirka
> 

No one ask for this. Since it's not very necessary, I will remove this 
message.

Thanks
Jin Yao