gn command not found

[ChenYilong]

try to check if the

echo $PATH

/Users/chenyilong/opensource/webrtc_build/webrtc/src/depot_tools:/Users/chenyilong/opensource/webrtc_build/webrtc/src/depot_tools:/Users/chenyilong/.rvm/gems/ruby-2.2.2/bin:/Users/chenyilong/.rvm/gems/ruby-2.2.2@global/bin:/Users/chenyilong/.rvm/rubies/ruby-2.2.2/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/Users/chenyilong/.rvm/bin

If you've done this

echo "export PATH=$PWD/depot_tools:$PATH" > $HOME/.bash_profile

then check the prefix

ls /Users/chenyilong/opensource/webrtc_build/webrtc/src/depot_tools

if logs like this

: No such file or directory

this means wrong path.

use the right one instead

ls /Users/chenyilong/opensource/webrtc_build/

or you can try to install gn command with brew:

brew install --HEAD https://raw.githubusercontent.com/Homebrew/homebrew-head-only/master/depot-tools.rb

make sure your Termal able to access https://gerrit.googlesource.com

or you will meet this error:

Failure while executing: git clone --branch v1.12.37 https://gerrit.googlesource.com/git-repo.git /Users/chenyilong/Library/Caches/Homebrew/repo--git

remember those commands:

chmod +x src/buildtools/mac/gn

../../depot_tools/gn gen out/Release-universal --args='target_os="ios" target_cpu="x64" additional_target_cpus=["arm", "arm64", "x86"] is_component_build=false is_debug=false ios_enable_code_signing=false'