The perf build failed on Linux mainline kernel for arm, arm64, i386 and x86_64.

perf build failure log on x86_64: ------------------------------------------- | find: unknown predicate `-m64/arch' | Try 'find --help' for more information. | x86_64-linaro-linux-gcc: warning: '-x c' after last input file has no effect | x86_64-linaro-linux-gcc: error: unrecognized command line option '-m64/include/uapi/asm-generic/errno.h' | x86_64-linaro-linux-gcc: fatal error: no input files | compilation terminated. | MKDIR /srv/oe/build/tmp-lkft-glibc/work/intel_corei7_64-linaro-linux/perf/1.0-r9/perf-1.0/pmu-events/ | GEN perf-archive | GEN perf-with-kcore | MKDIR /srv/oe/build/tmp-lkft-glibc/work/intel_corei7_64-linaro-linux/perf/1.0-r9/perf-1.0/pmu-events/ | HOSTCC /srv/oe/build/tmp-lkft-glibc/work/intel_corei7_64-linaro-linux/perf/1.0-r9/perf-1.0/pmu-events/jevents.o | HOSTCC /srv/oe/build/tmp-lkft-glibc/work/intel_corei7_64-linaro-linux/perf/1.0-r9/perf-1.0/pmu-events/json.o | x86_64-linaro-linux-gcc: warning: '-x c' after last input file has no effect | LD /srv/oe/build/tmp-lkft-glibc/work/intel_corei7_64-linaro-linux/perf/1.0-r9/perf-1.0/libsubcmd-in.o | HOSTCC /srv/oe/build/tmp-lkft-glibc/work/intel_corei7_64-linaro-linux/perf/1.0-r9/perf-1.0/pmu-events/jsmn.o | x86_64-linaro-linux-gcc: error: unrecognized command line option '-m64/include/uapi/asm-generic/errno.h' | x86_64-linaro-linux-gcc: fatal error: no input files | compilation terminated.

| make[3]: Nothing to be done for '/srv/oe/build/tmp-lkft-glibc/work/intel_corei7_64-linaro-linux/perf/1.0-r9/perf-1.0/plugins/libtraceevent-dynamic-list'. | GEN /srv/oe/build/tmp-lkft-glibc/work/intel_corei7_64-linaro-linux/perf/1.0-r9/perf-1.0/python/perf.so | Traceback (most recent call last): | File "util/setup.py", line 6, in <module> | cc_is_clang = b"clang version" in Popen([cc, "-v"], stderr=PIPE).stderr.readline() | File "/srv/oe/build/tmp-lkft-glibc/work/intel_corei7_64-linaro-linux/perf/1.0-r9/recipe-sysroot-native/usr/lib/python2.7/subprocess.py", line 394, in __init__ | errread, errwrite) | File "/srv/oe/build/tmp-lkft-glibc/work/intel_corei7_64-linaro-linux/perf/1.0-r9/recipe-sysroot-native/usr/lib/python2.7/subprocess.py", line 1047, in _execute_child | raise child_exception | OSError: [Errno 2] No such file or directory | cp: cannot stat '/srv/oe/build/tmp-lkft-glibc/work/intel_corei7_64-linaro-linux/perf/1.0-r9/perf-1.0/python_ext_build/lib/perf*.so': No such file or directory | Makefile.perf:590: recipe for target '/srv/oe/build/tmp-lkft-glibc/work/intel_corei7_64-linaro-linux/perf/1.0-r9/perf-1.0/python/perf.so' failed

ref: https://ci.linaro.org/view/lkft/job/openembedded-lkft-linux-mainline/DISTRO=...