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win: more verbose load failures (#12683)

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When loading the dynamic libraries, if something goes wrong report some
details.  Unfortunately this wont explain which dependencies are missing,
but this breadcrumb in the logs should help us diagnose GPU discovery
failures.
This commit is contained in:
Daniel Hiltgen
2025-10-17 17:13:16 -07:00
committed by GitHub
parent 68e04c7ff8
commit ba2253dc30
2 changed files with 44 additions and 0 deletions
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12
ml/backend/ggml/ggml/src/ggml-backend-reg.cpp vendored
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@@ -118,6 +118,18 @@ static dl_handle * dl_load_library(const fs::path & path) {
SetErrorMode(old_mode | SEM_FAILCRITICALERRORS);
HMODULE handle = LoadLibraryW(path.wstring().c_str());
if (!handle) {
DWORD error_code = GetLastError();
std::string msg;
LPSTR lpMsgBuf = NULL;
DWORD bufLen = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
NULL, error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPSTR)&lpMsgBuf, 0, NULL);
if (bufLen) {
msg = lpMsgBuf;
LocalFree(lpMsgBuf);
GGML_LOG_INFO("%s unable to load library %s: %s\n", __func__, path_str(path).c_str(), msg.c_str());
}
}
SetErrorMode(old_mode);