step1、install Xcode

step2、install xcpkg

step3、update xcpkg-formula-repository

xcpkg update

step4、build and install zlib-ng

xcpkg install zlib-ng

xcpkg formula view zlib-ng

{{ formula }}

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

xcpkg formula edit zlib-ng

after editing, you may want to rebuild this package ⤵︎

xcpkg install zlib-ng