git clone https://github.com/Leandros/PackCC
cd PackCC
zig cc -o packcc src/packcc.c
./packcc test.peg

letter          <- [a-z]
upper_letter    <- [A-Z]
digit           <- [0-9]
hex_digit       <- [a-fA-F0-9]

 "native": {
  "triple": "x86_64-macosx.10.15.4...10.15.4-gnu",
  "cpu": {
   "arch": "x86_64",
   "name": "skylake",
   "features": [
    "64bit",
    "adx",
    "aes",
    "avx",
    "avx2",
    "bmi",
    "bmi2",
    "clflushopt",
    "cmov",
    "cx16",
    "cx8",
    "ermsb",
    "f16c",
    "false_deps_popcnt",
    "fast_gather",
    "fast_scalar_fsqrt",
    "fast_shld_rotate",
    "fast_variable_shuffle",
    "fast_vector_fsqrt",
    "fma",
    "fsgsbase",
    "fxsr",
    "idivq_to_divl",
    "invpcid",
    "lzcnt",
    "macrofusion",
    "merge_to_threeway_branch",
    "mmx",
    "movbe",
    "nopl",
    "pclmul",
    "popcnt",
    "prfchw",
    "rdrnd",
    "rdseed",
    "rtm",
    "sahf",
    "sgx",
    "slow_3ops_lea",
    "sse",
    "sse2",
    "sse3",
    "sse4_1",
    "sse4_2",
    "ssse3",
    "vzeroupper",
    "x87",
    "xsave",
    "xsavec",
    "xsaveopt",
    "xsaves"
   ]
  },
  "os": "macosx",
  "abi": "gnu"
 }
}

/Users/mike/project/zig/work/main/_build/zig clang -c -MD -MV -MF zig-cache/tmp/IxXTZWm1VAPe-packcc.o.d -nostdinc -fno-spell-checking -isystem /Users/mike/project/zig/work/main/lib/include -isystem /Applications/Xcode_11.4.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include -target x86_64-unknown-macosx-gnu -Xclang -target-cpu -Xclang skylake -Xclang -target-feature -Xclang -3dnow,-3dnowa,+64bit,+adx,+aes,+avx,+avx2,-avx512bf16,-avx512bitalg,-avx512bw,-avx512cd,-avx512dq,-avx512er,-avx512f,-avx512ifma,-avx512pf,-avx512vbmi,-avx512vbmi2,-avx512vl,-avx512vnni,-avx512vp2intersect,-avx512vpopcntdq,+bmi,+bmi2,-branchfusion,-cldemote,+clflushopt,-clwb,-clzero,+cmov,+cx16,+cx8,-enqcmd,+ermsb,+f16c,-false-deps-lzcnt-tzcnt,+false-deps-popcnt,-fast-11bytenop,-fast-15bytenop,-fast-bextr,+fast-gather,-fast-hops,-fast-lzcnt,+fast-scalar-fsqrt,-fast-scalar-shift-masks,+fast-shld-rotate,+fast-variable-shuffle,+fast-vector-fsqrt,-fast-vector-shift-masks,+fma,-fma4,+fsgsbase,+fxsr,-gfni,-idivl-to-divb,+idivq-to-divl,+invpcid,-lea-sp,-lea-uses-ag,-lwp,+lzcnt,+macrofusion,+merge-to-threeway-branch,+mmx,+movbe,-movdir64b,-movdiri,-mpx,-mwaitx,+nopl,-pad-short-functions,+pclmul,-pconfig,-pku,+popcnt,-prefer-128-bit,-prefer-256-bit,-prefer-mask-registers,-prefetchwt1,+prfchw,-ptwrite,-rdpid,+rdrnd,+rdseed,-retpoline,-retpoline-external-thunk,-retpoline-indirect-branches,-retpoline-indirect-calls,+rtm,+sahf,+sgx,-sha,-shstk,+slow-3ops-lea,-slow-incdec,-slow-lea,-slow-pmaddwd,-slow-pmulld,-slow-shld,-slow-two-mem-ops,-slow-unaligned-mem-16,-slow-unaligned-mem-32,-soft-float,+sse,-sse-unaligned-mem,+sse2,+sse3,+sse4.1,+sse4.2,-sse4a,+ssse3,-tbm,-use-aa,-use-glm-div-sqrt-costs,-vaes,-vpclmulqdq,+vzeroupper,-waitpkg,-wbnoinvd,+x87,-xop,+xsave,+xsavec,+xsaveopt,+xsaves -fno-omit-frame-pointer -fsanitize=undefined -fsanitize-trap=undefined -D_DEBUG -Og -fstack-protector-strong --param ssp-buffer-size=4 -fPIC -o zig-cache/tmp/IxXTZWm1VAPe-packcc.o src/packcc.c
ar rcs /Users/mike/Library/Application Support/zig/stage1/o/GvmuHNTPAJzWv4hHlwxAEBIeh15etRIXXmlsOcHFEOZ061si1Hhb4A02b2UnKWcO/libcompiler_rt.a /Users/mike/Library/Application Support/zig/stage1/o/GvmuHNTPAJzWv4hHlwxAEBIeh15etRIXXmlsOcHFEOZ061si1Hhb4A02b2UnKWcO/compiler_rt.o
lld -demangle -dynamic -arch x86_64 -macosx_version_min 10.15.4 -sdk_version 10.15.4 -pie -o zig-cache/o/xJW7ZQWEqb9z7llI0wHLzdlmW8QF1hAv0PAfNnSefVEjBrp42BCdVeEZDXKfEhii/packcc zig-cache/o/H6HlXLAQ3Ic2o5f8hlLVAOk1a4sTAYHY2s6FwsovThZM9Jbpmzbu7BI1KFVmn90R/packcc.o /Users/mike/Library/Application Support/zig/stage1/o/GvmuHNTPAJzWv4hHlwxAEBIeh15etRIXXmlsOcHFEOZ061si1Hhb4A02b2UnKWcO/libcompiler_rt.a -lSystem