GNU Compiler: Procedure entry point ...could not be located - after g++ upgrade

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If you encounter a "Procedure entry point ... could not be located" error after upgrading your GNU Compiler (g++) on Windows, it typically indicates a compatibility issue or a mismatch between the installed compiler version and the dependencies of your program. Here are a few steps you can take to troubleshoot and resolve the issue:

  1. Verify Compatibility: Ensure that the upgraded g++ version is compatible with your system and the libraries or dependencies your program relies on. Check the release notes or documentation of the upgraded g++ version to ensure it is compatible with your target platform and any external libraries you are using.

  2. Check Library Versions: Verify that the libraries or dependencies used by your program are compatible with the upgraded g++ version. Make sure that you have the correct versions of any external libraries or dependencies required by your program, and that they are properly linked during the compilation process.

  3. Clean and Rebuild: Perform a clean build of your program by removing any previously compiled object files, binaries, or build artifacts. Then, rebuild your program using the upgraded g++ version to ensure that it is using the correct libraries and dependencies.

  4. Check PATH Environment Variable: Confirm that the PATH environment variable is correctly set to include the directory where the upgraded g++ version is installed. Sometimes, after upgrading, the PATH variable may need to be updated to point to the new compiler location. Make sure the PATH variable includes the correct path to the upgraded g++ installation directory.

  5. Reinstall Dependencies: If the issue persists, consider reinstalling the external libraries or dependencies used by your program. Ensure that you have the latest compatible versions of these libraries, and that they are properly installed and accessible to the upgraded g++.

  6. Check Compatibility with other Components: If your program interacts with other components, such as shared libraries or DLLs, ensure that they are also compatible with the upgraded g++ version. Verify the compatibility of all components and dependencies in your program's ecosystem.

If the above steps do not resolve the issue, it's recommended to seek further assistance from the g++ community or consult with a C++ expert who can provide more targeted guidance based on your specific scenario and codebase.