On Wed, Mar 28, 2018 at 10:57:08PM +0800, Jin Yao wrote: > 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. > > This patch provides a new option '-vv' which will print the > compiled-in status of libraries. > > The 'perf -vv' is equal to 'perf -version --build-options'. > > For example: > > $ ./perf -vv or ./perf -version --build-options > perf version 4.13.rc5.gcb1183 > 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 > > v2: > --- > Use a global variable version_verbose to count the number of 'v'. > > Signed-off-by: Jin Yao <yao....@linux.intel.com> > --- > tools/perf/perf.c | 22 ++++++++++++++++++---- > tools/perf/perf.h | 1 + > 2 files changed, 19 insertions(+), 4 deletions(-) > > diff --git a/tools/perf/perf.c b/tools/perf/perf.c > index 1b3fc8e..355219e 100644 > --- a/tools/perf/perf.c > +++ b/tools/perf/perf.c > @@ -32,7 +32,7 @@ > #include <linux/kernel.h> > > const char perf_usage_string[] = > - "perf [--version] [--help] [OPTIONS] COMMAND [ARGS]"; > + "perf [--version [--build-options]] [--help] [OPTIONS] COMMAND [ARGS]";
--build-options is 'perf version' option no? jirka
