step1、install Xcode

step2、install xcpkg

step3、update xcpkg-formula-repository

xcpkg update

step4、build and install re2c

xcpkg install re2c

xcpkg formula view re2c

{{ formula }}

if the formula of re2c dosn't meet your needs, you can edit it ⤵︎

xcpkg formula edit re2c

after editing, you may want to rebuild this package ⤵︎

xcpkg install re2c