Fix build for Apple M<x> silicon

[PauloMigAlmeida]

In order to make it run on Apple M1,2,3 devices I had to upgrade LuaJit to the latest version (2.1) and tweak a few things on the makefile.

I also made LuaJIT to be downloaded during build phase so upgrades to different versions don't result in massive PR due to the lib vendoring (which is hard to evalute)

One can compile it to arm arch by executing

brew install openssl@3 gcc@12
make \
    CC=/opt/homebrew/Cellar/gcc@12/12.4.0/bin/gcc-12 \
    OPENSSL_LIB=/opt/homebrew/Cellar/openssl@3/3.3.2/ \
    clean all

Running wrk

 ./wrk -t2 -c10 -d30s -R200 https://google.com                                                                    
Running 30s test @ https://google.com
  2 threads and 10 connections
  Thread calibration: mean lat.: 4713.042ms, rate sampling interval: 16343ms
  Thread calibration: mean lat.: 4693.897ms, rate sampling interval: 16293ms
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency    18.08s     5.19s   27.08s    57.71%
    Req/Sec     9.50      0.50    10.00    100.00%
  593 requests in 30.03s, 491.08KB read
Requests/sec:     19.74
Transfer/sec:     16.35KB

[janl]

heads up: Homebrew on M1 Macs stores openssl at /opt/homebrew/opt/openssl

[jion]

What I'm doing wrong? Macbook with an M3

❯ brew install openssl@3 gcc@12
==> Downloading https://formulae.brew.sh/api/formula.jws.json
==> Downloading https://formulae.brew.sh/api/cask.jws.json
Warning: openssl@3 3.4.1 is already installed and up-to-date.
To reinstall 3.4.1, run:
  brew reinstall openssl@3
==> Downloading https://ghcr.io/v2/homebrew/core/gcc/12/manifests/12.4.0
############################################################################################################################################################################ 100.0%
==> Fetching gcc@12
==> Downloading https://ghcr.io/v2/homebrew/core/gcc/12/blobs/sha256:55614581a8985550c5cc84cd29f7122d4aca5d11f60c5ff119e7432419c2b9d8
############################################################################################################################################################################ 100.0%
==> Pouring gcc@12--12.4.0.arm64_sonoma.bottle.tar.gz
🍺  /opt/homebrew/Cellar/gcc@12/12.4.0: 1,438 files, 356.7MB
==> Running `brew cleanup gcc@12`...
Disable this behaviour by setting HOMEBREW_NO_INSTALL_CLEANUP.
Hide these hints with HOMEBREW_NO_ENV_HINTS (see `man brew`).
❯ make \
    CC=/opt/homebrew/Cellar/gcc@12/12.4.0/bin/gcc-12 \
    OPENSSL_LIB=/opt/homebrew/Cellar/openssl@3/3.3.2/ \
    clean all
rm -f wrk obj/*
/Applications/Xcode.app/Contents/Developer/usr/bin/make -C src clean
lj_arch.h:55:2: error: #error "No support for this architecture (yet)"
   55 | #error "No support for this architecture (yet)"
      |  ^~~~~
lj_arch.h:279:2: error: #error "No target architecture defined"
  279 | #error "No target architecture defined"
      |  ^~~~~
lj_arch.h:55:2: error: #error "No support for this architecture (yet)"
   55 | #error "No support for this architecture (yet)"
      |  ^~~~~
lj_arch.h:279:2: error: #error "No target architecture defined"
  279 | #error "No target architecture defined"
      |  ^~~~~
lj_arch.h:55:2: error: #error "No support for this architecture (yet)"
   55 | #error "No support for this architecture (yet)"
      |  ^~~~~
lj_arch.h:279:2: error: #error "No target architecture defined"
  279 | #error "No target architecture defined"
      |  ^~~~~
lj_arch.h:55:2: error: #error "No support for this architecture (yet)"
   55 | #error "No support for this architecture (yet)"
      |  ^~~~~
lj_arch.h:279:2: error: #error "No target architecture defined"
  279 | #error "No target architecture defined"
      |  ^~~~~
lj_arch.h:55:2: error: #error "No support for this architecture (yet)"
   55 | #error "No support for this architecture (yet)"
      |  ^~~~~
lj_arch.h:279:2: error: #error "No target architecture defined"
  279 | #error "No target architecture defined"
      |  ^~~~~
lj_arch.h:55:2: error: #error "No support for this architecture (yet)"
   55 | #error "No support for this architecture (yet)"
      |  ^~~~~
lj_arch.h:279:2: error: #error "No target architecture defined"
  279 | #error "No target architecture defined"
      |  ^~~~~
Makefile:231: *** Unsupported target architecture.  Stop.
make[1]: *** [clean] Error 2
make: *** [clean] Error 2

[Olshansk]

Can we merge this in?

[mokshasoft]

I've added nix build that works on MacOS in the following PR, #153. It's mostly a simple CI feature, but since I work on mac I needed the flake.