[PATCH v1 00/13] Perf tool build improvements

[Ian Rogers]

Make the default build options a more preferred set, such as making
BPF skeletons default and failing the build if jevents or libtracevent
dependencies fail. The binutil dependencies are opt-in given license
restrictions. abi::__cxa_demangle demangling support is added so that
libiberty, from binutils, isn't necessary for C++ demangling.

Some build/test dependencies are fixed and the code cleaned up.

Ian Rogers (13):
  perf build: Support python/perf.so testing
  perf build: Make BUILD_BPF_SKEL default, rename to NO_BPF_SKEL
  perf build: Remove unused HAVE_GLIBC_SUPPORT
  perf build: Error if no libelf and NO_LIBELF isn't set
  perf util: Remove weak sched_getcpu
  perf build: Error if jevents won't work and NO_JEVENTS=1 isn't set
  perf build: Make binutil libraries opt in
  tools build: Add feature test for abi::__cxa_demangle
  perf symbol: Add abi::__cxa_demangle C++ demangling support
  perf build: Switch libpfm4 to opt-out rather than opt-in
  perf build: If libtraceevent isn't present error the build
  tools headers: Make the difference output easier to read
  perf build: Remove redundant NO_NEWT build option

 tools/build/Makefile.feature              |   1 +
 tools/build/feature/Makefile              |   4 +
 tools/build/feature/test-cxa-demangle.cpp |  17 ++
 tools/perf/Makefile.config                |  84 +++-----
 tools/perf/Makefile.perf                  |  21 +-
 tools/perf/builtin-lock.c                 |   2 +-
 tools/perf/builtin-record.c               |   2 +-
 tools/perf/builtin-version.c              |   2 +-
 tools/perf/check-headers.sh               | 229 ++++++++++++----------
 tools/perf/tests/make                     |  17 +-
 tools/perf/tests/shell/record_offcpu.sh   |   2 +-
 tools/perf/util/Build                     |   1 +
 tools/perf/util/cloexec.c                 |  13 --
 tools/perf/util/demangle-cxx.cpp          |  50 +++++
 tools/perf/util/demangle-cxx.h            |  16 ++
 tools/perf/util/symbol-elf.c              |  37 +---
 tools/perf/util/util.c                    |  16 ++
 17 files changed, 294 insertions(+), 220 deletions(-)
 create mode 100644 tools/build/feature/test-cxa-demangle.cpp
 create mode 100644 tools/perf/util/demangle-cxx.cpp
 create mode 100644 tools/perf/util/demangle-cxx.h

-- 
2.40.0.rc1.284.g88254d51c5-goog