m1 MacBookAir に買い替えたのでAtCoder用にC++コンパイルできる環境を構築した際のメモ
$ brew install gcc $ sudo mkdir /usr/local/bin $ which gcc-11 /opt/homebrew/bin/gcc-11 $ which g++-11 /opt/homebrew/bin/g++-11 $ sudo ln -s /opt/homebrew/bin/gcc-11 /usr/local/bin/gcc $ sudo ln -s /opt/homebrew/bin/g++-11 /usr/local/bin/g++ $ gcc -v $ g++ -v
実行
$ echo ' #include <bits/stdc++.h> using namespace std; int main() { cout << "foo"; return 0; } ' > main.cpp $ g++ -std=gnu++17 main.cpp && ./a.out foo