error: llc: xdp-dispatcher.ll:410:54: error: unterminated attribute group

[NobinPegasus]

When I'm trying to build this repo. I get the following errors.

pegasus@pegasus:~/Documents/eBPF/xdp-tutorial$ make
error: pathspec 'lib/libbpf' did not match any file(s) known to git

lib

  libbpf
    CC       install/lib/libbpf.a
    INSTALL  install/lib/libbpf.a

  libxdp
    CC       install/lib/libxdp.a
llc: error: llc: xdp-dispatcher.ll:410:54: error: unterminated attribute group
attributes #0 = { nofree noinline norecurse nounwind memory(inaccessiblemem: readwrite) "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }
                                                     ^
make[4]: *** [Makefile:138: xdp-dispatcher.o] Error 1
make[3]: *** [Makefile:20: libxdp] Error 2
make[2]: *** [Makefile:28: libxdp] Error 2
make[1]: *** [Makefile:68: install/lib/libxdp.a] Error 2
make: *** [Makefile:27: lib] Error 2