# Error during build setup, has anyone experienced this? **URL:** \ **Category:** compiler\ **Created:** [July 11, 2025, 8:31pm UTC](https://dev-discuss.pytorch.org/t/error-during-build-setup-has-anyone-experienced-this/3120 "2025-07-11T20:31:30Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![SRIRAMDADI1](https://yyz2.discourse-cdn.com/flex036/user_avatar/dev-discuss.pytorch.org/sriramdadi1/32/2812_2.png) [@SRIRAMDADI1](https://dev-discuss.pytorch.org/u/SRIRAMDADI1)\ **Post date:** [July 11, 2025, 8:31pm UTC](https://dev-discuss.pytorch.org/t/error-during-build-setup-has-anyone-experienced-this/3120/1 "2025-07-11T20:31:30Z")
The error message is below was wondering if anyone knew the cause: bin\torch\_cpu.dll : fatal error LNK1120: 1 unresolved externals ninja: build stopped: subcommand failed. – Building version 2.8.0a0+git31e1274 — Trying to initialize submodules — Submodule initialization took 216.85 sec – Checkout nccl release tag: v2.27.3-1 cmake -GNinja -DBUILD\_PYTHON=True -DBUILD\_TEST=True -DCMAKE\_BUILD\_TYPE=Release -DCMAKE\_INSTALL\_PREFIX=C:\Users\sd190\pytorch\torch -DCMAKE\_PREFIX\_PATH=C:\Users\sd190\AppData\Local\Programs\Python\Python312\Lib\site-packages -DPython\_EXECUTABLE=C:\Users\sd190\AppData\Local\Programs\Python\Python312\python.exe -DTORCH\_BUILD\_VERSION=2.8.0a0+git31e1274 -DUSE\_NUMPY=True C:\Users\sd190\pytorch cmake --build . --target install --config Release error: subprocess-exited-with-error ---
**Author:** ![albanD](https://yyz2.discourse-cdn.com/flex036/user_avatar/dev-discuss.pytorch.org/alband/32/9_2.png) [@albanD](https://dev-discuss.pytorch.org/u/albanD)\ **Post date:** [July 20, 2025, 10:17pm UTC](https://dev-discuss.pytorch.org/t/error-during-build-setup-has-anyone-experienced-this/3120/2 "2025-07-20T22:17:30Z")
Hi, Do you have a detailed error message by any chance? In particular which symbol is missing? If you can reproduce on latest main branch, do open an issue on github!