Assuming you have already installed rakudo-star, then you should have panda which is a perl6 package manager. I'd suggest using that to install:

$ panda install Inline::Perl5
==> Fetching Inline::Perl5
==> Building Inline::Perl5
gcc -Wall p5helper.c `perl -MExtUtils::Embed -e ccopts -e ldopts` -sha
+red -o /home/duelafn/.panda-work/1458055637_1/resources/libraries/lib
+p5helper.so -fPIC -g
==> Testing Inline::Perl5
t/autoload.t .................. ok
t/call.t ...................... ok
t/call_back.t ................. ok
t/call_hash.t ................. ok
t/call_p6_function_from_p5.t .. ok
t/callables.t ................. ok
t/can.t ....................... ok
t/eval.t ...................... ok
t/eval_p6_in_p5.t ............. ok
t/eval_return_values.t ........ ok
t/exceptions.t ................ ok
t/file_handles.t .............. ok
t/from.t ...................... ok
t/import.t .................... ok
t/inherit.t ................... ok
t/invoke.t .................... ok
t/invoke_p6_method_from_p5.t .. ok
t/overload.t .................. ok
t/p5_to_p6.t .................. ok
t/p6_object_destructor.t ...... ok
t/p6_to_p5.t .................. ok
t/perl5package.t .............. ok
t/perl5parent.t ............... ok
t/stringify.t ................. ok
t/use.t ....................... ok
t/v6.t ........................ ok
All tests successful.
Files=26, Tests=353, 24 wallclock secs ( 0.08 usr  0.02 sys + 22.48 cu
+sr  0.88 csys = 23.46 CPU)
Result: PASS
==> Installing Inline::Perl5
==> Successfully installed Inline::Perl5
[download]