mingw32-make[2]: *** [bin/libopencv_highgui470.dll] Error 1

This error message suggests that there was an error while compiling the OpenCV library, specifically while creating the "libopencv_highgui470.dll" file.

There are several possible causes for this error, including missing dependencies, incorrect configuration settings, or an issue with the source code itself.

To troubleshoot this issue, you can try the following steps:

1. Make sure that all required dependencies are installed and configured correctly. This may include libraries such as GTK, JPEG, PNG, and others, depending on your specific configuration.

2. Check that your build settings are correct and match your system configuration. This may involve adjusting options such as the target platform, compiler version, or library paths.

3. Review any error messages or warnings that were generated during the build process, and try to identify any specific issues that may have caused the error.

4. If all else fails, try building the library using a different system or configuration, or seek help from the OpenCV community or support resources.

Overall, resolving this error may require some trial and error, as well as a good understanding of the OpenCV library and the build process.