docs: Windows+CUDA toolchain notes from a successful local CUDA build - #11
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Encodes the recipe verified by a successful local CUDA build: - use VS 2019 Build Tools (MSVC 14.29) with -G 'Visual Studio 16 2019'; newer VS (19.5x) is rejected by supported nvcc - when multiple CUDA toolkits are installed, MSBuild picks the newest via CUDA_PATH_V<major>_<minor>; pin it (nvcc 13 + MSVC 14.29 breaks __cudaLaunch macro -> error C4002) - fix stale clone URL to the renamed repo (game.cpp)
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本地成功构建 CUDA 变体后沉淀的经验（踩了两小时坑）：\n- 机器上即便装了更新的 VS（VS2026/MSVC 19.5x），nvcc 不认 → 用 VS2019 BuildTools（MSVC 14.29）+ 生成器 \Visual Studio 16 2019\ + -DCMAKE_CUDA_ARCHITECTURES=75\n- 多套 CUDA 并存时 MSBuild 按 \CUDA_PATH_V_\ 环境变量挑最新版（nvcc13 + MSVC14.29 会因 __cudaLaunch\ 宏不兼容报 error C4002）→ 钉死目标版本\n- 顺带修正过期 clone URL（game_ggml_cli → game.cpp）\n\nCI 参考：ubuntu-22.04/windows-2022 + CUDA 12.6.3。