b8843
A critical CMake policy fix restores MSVC builds for Llama.cpp, ending a Windows development blocker.
The open-source project Llama.cpp, maintained by ggml-org, has resolved a significant development blocker with its latest commit, b8843. The issue stemmed from a previous change (commit #21630) that introduced CMake policy CMP0194 to silence a warning. However, this policy had the unintended consequence of making CMake prefer the MinGW toolchain for assembly (ASM) code on Windows, which completely broke builds using the standard Microsoft Visual C++ (MSVC) compiler. This affected developers relying on MSVC for key Windows features like CUDA for NVIDIA GPUs, Vulkan graphics API support, and SYCL for Intel hardware acceleration.
The fix, contributed by texasich and prompted by a report from oobabooga (creator of the popular text-generation-webui), was straightforward: reverting the specific policy block for CMP0194. This restoration means the cosmetic CMake warning for version 4.1+ returns, but the builds function correctly again. The commit is part of a routine release that includes pre-built binaries for a vast array of platforms, from macOS Apple Silicon and Linux (with CPU, Vulkan, ROCm, and OpenVINO backends) to Android and the now-restored Windows targets. For the Windows AI development community, this patch is essential, as MSVC is the primary and most supported compiler for leveraging NVIDIA's CUDA ecosystem and other native Windows performance libraries.
- Commit b8843 fixes a broken MSVC build process caused by CMake policy CMP0194, which forced MinGW toolchain usage.
- The issue was reported by oobabooga and affected Windows builds for CUDA, Vulkan, and SYCL backends critical for GPU acceleration.
- The fix restores previous working behavior, allowing developers to compile Llama.cpp with the standard Microsoft Visual C++ compiler on Windows.
Why It Matters
This fix unblocks Windows developers from building and using optimized local LLMs with CUDA and other native GPU acceleration backends.