Steps that should work

• Install gcc 11 using brew install gcc@11 in the terminal.

  • Then run g++-11 --version and it should show g++-11 (Homebrew GCC 11.3.0) 11.3.0 or something similar
  • I faced some issues with gcc 13 while using pbds based data structures, so use gcc 11 to be on the safer side.

• Install the Xcode app from App Store

• Go to the path = /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1 To do this easily, open Finder and press Cmd+Shift+G and paste this path address and it should open up.

• Create a folder named bits and go to this folder.

• Create a file named stdc++.h inside the bits folder and open it using any text editor (e.g. TextEdit). So just right click on the stdc++.h file and select Open With and then select TextEdit.

• Paste the content from this repo to the stdc++.h file: https://github.com/gcc-mirror/gcc/blob/master/libstdc%2B%2B-v3/include/precompiled/stdc%2B%2B.h

• Now close Sublime Text/VS Code and reopen it and run a C++ file.

• My sublime build system for CP looks like this on Mac:

  {
  	"shell_cmd": "g++-11 -std=c++17 \\"${file}\\" -o \\"${file_path}/${file_base_name}\\" && \\"${file_path}/${file_base_name}\\"<~/Desktop/Codes/input.txt>~/Desktop/Codes/output.txt  && rm \\"${file_path}/${file_base_name}\\"",
  	"file_regex": "^(..[^:]*):([0-9]+):?([0-9]+)?:? (.*)$",
  	"working_dir": "${file_path}",
  	"selector": "source.c++",
  }
  

  • Here, change ~/Desktop/Codes/input.txt by the exact path of your input file and change ~/Desktop/Codes/output.txt by the exact path of your output file. Check this to know how to get file paths on Mac.

  Make sure to install g++-11 using brew install gcc@11 . Run g++-11 --version to check if it is installed properly.

• Now run the following code:

  #include<bits/stdc++.h>
  using namespace std;
  
  int main() {
    int x; cin >> x;
    cout << x * x << '\\n';
    return 0;
  }
  

• It should work!

• If it shows: bash: g++-11 command not found but in the terminal g++-11 --version works fine, then in terminal run the which g++-11 command and it should return something like /opt/homebrew/bin/g++-11 . Then in the build change g++-11 by /opt/homebrew/bin/g++-11 .

If it doesn’t work

• Try the same thing as above using path = /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/
• It should work now, but it might give you different errors like include<cstdalign> is not found or smth similar. Just remove this include from the stdc++.h file and try again.
• You might need to remove multiple includes and it should work eventually(at least it worked for me!). In my case, I had to remove the following lines from stdc++.h:
  • include<cstdalign>
  • include<cuchar>
  • include<memory_resources>

If it still doesn’t work