fix: check for the exitance of .cpprc

Author: aminya

README.md

@@ -84,7 +84,7 @@ source ~/.cpprc # activate cpp enviroment variables
 
 NOTE: In the `compiler` entry, you can specify the version after `-` like `llvm-11.0.0`. For the tools, you can pass a specific version instead of `true` that chooses the default version
 
-NOTE: On Unix systems, when `setup-cpp` is used locally or in other CI services like GitLab, the environment variables are added to `~/.cpprc`. You should run `source ~/.cpprc` to immediately activate the environment variables. This file is automatically sourced in the next shell restart from `~/.bashrc` or `~/.profile` if `SOURCE_CPPRC` is not set to `0`.
+NOTE: On Unix systems, when `setup-cpp` is used locally or in other CI services like GitLab, the environment variables are added to `~/.cpprc`. You should run `source ~/.cpprc` to immediately activate the environment variables. This file is automatically sourced in the next shell restart from `~/.bashrc` or `~/.profile` if `SOURCE_CPPRC` is not set to `0`. To deactivate `.cpprc` in the next shell restart, rename/remove `~/.cpprc`.
 
 NOTE: On Unix systems, you will not need `sudo` if you are already a root user (e.g., in a GitLab runner or Docker).
 

dist/setup_cpp.js

@@ -115,7 +115,7 @@ function setupCppInProfile() {
   appendFileSync(cpprc_path, `\n${source_cpprc_str}\n`)
   info(`Added ${source_cpprc_str} to ${cpprc_path}`)
 
-  const source_cpprc_string = `\n# source .cpprc if SOURCE_CPPRC is set to 1\nif [ "$SOURCE_CPPRC" = 1 ]; then source "${cpprc_path}"; fi\n`
+  const source_cpprc_string = `\n# source .cpprc if SOURCE_CPPRC is not set to 0\nif [[ "$SOURCE_CPPRC" != 0 && -f "${cpprc_path}" ]]; then source "${cpprc_path}"; fi\n`
 
   try {
     // source cpprc in .profile