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M1 Pro Max笔记本Open3D库安装后无法加载求助

问题

M1 Pro Max笔记本,已安装Python 3.9.1并通过pip安装Open3D库,运行以下代码时加载失败:

import sys
print(sys.version)

import platform
print(platform.platform())

import numpy as np
import open3d as o3d


print("Load a ply point cloud, print it, and render it")
pcd = o3d.io.read_point_cloud("data/bun315.ply")
print(pcd)
print(np.asarray(pcd.points))
o3d.visualization.draw_geometries([pcd])

报错信息:

3.9.1 (v3.9.1:1e5d33e9b9, Dec  7 2020, 12:44:01) 
[Clang 12.0.0 (clang-1200.0.32.27)]
macOS-12.5.1-arm64-arm-64bit

Traceback (most recent call last):
  File "/Users/abdelnasser/Desktop/point clouds/bunny/hello.py", line 8, in <module>
    import open3d as o3d
  File "/Users/abdelnasser/Library/Python/3.9/lib/python/site-packages/open3d/__init__.py", line 97, in <module>
    from open3d.cpu.pybind import (camera, data, geometry, io, pipelines,
ImportError: dlopen(/Users/abdelnasser/Library/Python/3.9/lib/python/site-packages/open3d/cpu/pybind.cpython-39-darwin.so, 0x0002): Library not loaded: '/opt/homebrew/opt/libomp/lib/libomp.dylib'
  Referenced from: '/Users/abdelnasser/Library/Python/3.9/lib/python/site-packages/open3d/cpu/pybind.cpython-39-darwin.so'
  Reason: tried: '/opt/homebrew/opt/libomp/lib/libomp.dylib' (no such file), '/usr/lib/libomp.dylib' (no such file)

此前安装并卸载过Homebrew,该库在Intel和M2 Air设备上可正常运行。

解决方案

方案1:重新安装Homebrew并补装libomp

arm64架构下的Open3D pip包编译时依赖Homebrew提供的libomp,卸载Homebrew会删除该库,重新安装即可解决:

# 安装Homebrew
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
# 安装libomp
brew install libomp

安装完成后重新运行代码即可。

方案2:手动安装libomp并配置环境变量

若不想重新安装Homebrew,可手动获取libomp库并指定路径:

  1. 从LLVM官网下载适配arm64 macOS的libomp二进制包
  2. 将解压后的libomp.dylib复制到/usr/local/lib目录(若目录不存在需先创建:sudo mkdir -p /usr/local/lib)
  3. 临时配置环境变量使系统能找到该库:
export DYLD_LIBRARY_PATH="/usr/local/lib:$DYLD_LIBRARY_PATH"

若需永久生效,可将上述命令添加到~/.zshrc或~/.bash_profile文件中,保存后执行source ~/.zshrc生效。

方案3:使用conda安装Open3D

conda会自动管理依赖库,无需依赖Homebrew:

  1. 安装conda(若未安装)
  2. 执行以下命令安装Open3D:
conda install -c open3d-admin open3d

安装完成后切换到conda环境运行代码即可。

方案4:从源码编译Open3D(进阶)

若上述方案均不适用,可从源码编译Open3D,编译时指定系统自带的clang或手动指定libomp路径,步骤如下:

  1. 克隆Open3D源码:git clone https://github.com/isl-org/Open3D.git
  2. 创建编译目录并进入:cd Open3D && mkdir build && cd build
  3. 用CMake配置编译选项(指定不依赖Homebrew的路径):
cmake -DCMAKE_INSTALL_PREFIX=/usr/local -DOPEN3D_BUILD_PYTHON_MODULE=ON ..
  1. 编译并安装:make -j8 && sudo make install

内容的提问来源于stack exchange,提问作者delway

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