Warning: Kernel ABI header differences:
  diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h
  diff -u tools/include/uapi/linux/rtnetlink.h include/uapi/linux/rtnetlink.h
  diff -u tools/arch/x86/include/asm/msr-index.h arch/x86/include/asm/msr-index.h
  diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h
  diff -u tools/arch/arm64/include/uapi/asm/unistd.h arch/arm64/include/uapi/asm/unistd.h
  diff -u tools/include/asm-generic/bitops/fls.h include/asm-generic/bitops/fls.h
  diff -u tools/arch/x86/include/asm/insn.h arch/x86/include/asm/insn.h
  diff -u tools/arch/x86/lib/insn.c arch/x86/lib/insn.c
  diff -u tools/arch/arm64/include/asm/cputype.h arch/arm64/include/asm/cputype.h
  diff -u tools/perf/trace/beauty/include/uapi/linux/mount.h include/uapi/linux/mount.h
  diff -u tools/perf/trace/beauty/include/uapi/sound/asound.h include/uapi/sound/asound.h
Makefile.config:580: *** Error: libzstd is required by libelf, please do not set NO_LIBZSTD.  Stop.
make[3]: *** [Makefile.perf:288: sub-make] Error 2
make[2]: *** [Makefile:98: /immortalwrt/master/build_dir/target-x86_64_musl/linux-x86_64/linux-6.18.26/tools/perf-target-x86_64_musl/.built] Error 2
time: package/devel/perf/compile#3.07#0.77#10.40