onnxruntime

5ef0d211 - Windows: Show more useful DLL load errors to say exactly what DLL is missing (#24053)

Windows: Show more useful DLL load errors to say exactly what DLL is missing (#24053) ### Description When we fail to load a provider shared DLL in windows, the error is not very specific. Users have to figure out if the onnxruntime file is missing, a cuda file, or cudnn is not installed (and perhaps others). And this is just the cuda provider. It would be far more useful if it would say exactly what file is missing so the user can fix the actual problem. Plus, this will likely result in many fewer github issues regarding this problem, but if they do, they will be much easier to fix. This fix adds a function that will try loading a dll and its dependencies recursively to figure out which file is missing. It uses the OS dbghelp library to do it and is not very complex. This also fixes a many year old bug that was introduced in the change to use FormatMessage in env.cc, where the system error would always be an empty string `error 126 ""` due to passing 0 as the format buffer length. We will now see the more useful `The specified module could not be found.` style error messages. ### Motivation and Context Previously if we fail to load the cuda provider, the error would look like this, which is limited: `unknown file: error: C++ exception with description " onnxruntime::ProviderLibrary::Get [ONNXRuntimeError] : 1 : FAIL : LoadLibrary failed with error 126 "" when trying to load "C:\Example\Path\To\Library\onnxruntime_providers_cuda.dll"` Now it will look like this if cudnn is not installed: `unknown file: error: C++ exception with description onnxruntime::ProviderLibrary::Get [ONNXRuntimeError] : 1 : FAIL : Error loading "C:\Example\Path\To\Library\onnxruntime_providers_cuda.dll" which depends on "cudnn64_9.dll" which is missing. (Error 126: "The specified module could not be found.")` If cuda is not installed: `unknown file: error: C++ exception with description onnxruntime::ProviderLibrary::Get [ONNXRuntimeError] : 1 : FAIL : Error loading "C:\Example\Path\To\Library\onnxruntime_providers_cuda.dll" which depends on "cudart64_12.dll" which is missing. (Error 126: "The specified module could not be found.")` And if onnxruntime_providers_cuda.dll is not installed: `unknown file: error: C++ exception with description onnxruntime::ProviderLibrary::Get [ONNXRuntimeError] : 1 : FAIL : Error loading "C:\Example\Path\To\Library\onnxruntime_providers_cuda.dll" which is missing. (Error 126: "The specified module could not be found.") `