Pipe cerr to some file in c++ 17 build system for sublime text 3

To redirect std::cerr to a file in a C++17 build system for Sublime Text 3, you can modify the build system configuration to capture the standard error output and save it to a file. Here's an example:

1. Open Sublime Text and go to "Tools" -> "Build System" -> "New Build System". This will create a new build system configuration file.

2. Replace the default content with the following code:

   jsonCopy code
   {
   
       "cmd": ["your_compiler_executable", "$file"],
   
       "file_regex": "^(..[^:]*):([0-9]+):?([0-9]+)?:? (.*)$",
   
       "working_dir": "$file_path",
   
       "quiet": true,
   
       "shell_cmd": "your_compiler_executable \"$file\"",
   
       "variants": [
   
           {
   
               "name": "Capture Stderr",
   
               "shell_cmd": "your_compiler_executable \"$file\" 2> \"$file_base_name.err\""
   
           }
   
       ]
   
   }
   
   

   Replace "your_compiler_executable" with the actual path or command of your C++ compiler.

3. Save the file with a meaningful name and .sublime-build extension. For example, you can save it as cpp_with_stderr_capture.sublime-build.

4. Configure your project to use the newly created build system:

   • Go to "Project" -> "Edit Project" and add the following configuration:

     jsonCopy code
     "build_system": "Packages/User/cpp_with_stderr_capture.sublime-build"
     
     

   • Save the project file.

Now, when you build your C++ code using the configured build system in Sublime Text 3, the standard error output (std::cerr) will be redirected to a file with the same base name as your source file but with the .err extension. For example, if your source file is main.cpp, the error output will be saved to main.err.

You can modify the build system configuration further to suit your specific requirements, such as customizing the compiler flags, defining build variants, etc.