step1、install Xcode

step2、install xcpkg

step3、update xcpkg-formula-repository

xcpkg update

step4、build and install ngtcp2

xcpkg install ngtcp2

xcpkg formula view ngtcp2

{{ formula }}

if the formula of ngtcp2 dosn't meet your needs, you can edit it ⤵︎

xcpkg formula edit ngtcp2

after editing, you may want to rebuild this package ⤵︎

xcpkg install ngtcp2