Compile on Apple silicon

[galderz]

An attempt to make wrk2 work on Apple silicon. Tried and tested things based on what wrk had done (iow, I'm no expert on this). Feel free to improve it as necessary.

Here's some output to demonstrate that it appears to work:

$ ./wrk --version
wrk 4.0.0 [kqueue] Copyright (C) 2012 Will Glozer
...
$ ./wrk -H 'Host: localhost' -H 'Accept: text/plain,text/html;q=0.9,application/xhtml+xml;q=0.9,application/xml;q=0.8,*/*;q=0.7' -H 'Connection: keep-alive' --latency -d 15 -c 256 --timeout 8 -t 32 -R 480000 http://192.168.1.163:8080/plaintext -s pipeline.lua -- 16
...
  Latency Distribution (HdrHistogram - Recorded Latency)
 50.000%    1.57ms
 75.000%    6.44ms
 90.000%   24.43ms
 99.000%   53.76ms
 99.900%   69.82ms
 99.990%  163.97ms
 99.999%  213.25ms
100.000%  221.18ms
...
  7192122 requests in 15.00s, 0.99GB read
Requests/sec: 479576.53
Transfer/sec:     67.69MB
...
$ uname -a
Darwin m22 21.5.0 Darwin Kernel Version 21.5.0: Tue Apr 26 21:08:37 PDT 2022; root:xnu-8020.121.3~4/RELEASE_ARM64_T6000 arm64

[galderz]

LOL, seems others have already sent a PR. #110. I'll add both PRs to the issue (which should have really been linked there for ref)

[orefalo]

It worked! compiled on M1! thank you

[kklis]

Thank you, it worked brilliantly!