在Azure App Service上运行Python的dlib库：CMake安装问题求助

Yep, you absolutely can get CMake set up on your Azure App Service instance—though since it's a managed environment, you can't do a standard system-wide install. Here are a few reliable ways to make this work for your Python 3.4 app:

Option 1: Use a Precompiled CMake Binary (Works for Windows/Linux) #

This is the most straightforward approach for both Windows and Linux App Services:

• Download a compatible precompiled CMake binary (matching your App Service's OS and architecture) as a zip file.
• Upload the zip to your App Service's persistent storage (like the site/wwwroot directory) and extract it into a subfolder (e.g., ./cmake).
• Before running pip install dlib, add the CMake binary path to your app's PATH environment variable. You can do this in your startup script or directly in the shell:

  # Add this to your Python startup code or a pre-install script
  import os
  cmake_bin_path = os.path.join(os.getcwd(), 'cmake', 'bin')
  os.environ['PATH'] += os.pathsep + cmake_bin_path
  

• Now run pip install dlib again—pip should detect the CMake executable and proceed with compiling the library.

Option 2: Install via Package Manager (Linux-only App Services) #

If you're running a Linux-based App Service, you can use the system package manager to install CMake during deployment:

• Add a post-build command to your deployment settings (or include it in a custom startup script). For Debian/Ubuntu-based instances, use:

  apt-get update && apt-get install -y cmake --no-install-recommends
  

• This command will install CMake every time you deploy, so adding --no-install-recommends keeps it lightweight, and the -y flag skips confirmation prompts.

Option 3: Skip Compilation with a Pre-built dlib Wheel #

If compiling feels too tedious, you can avoid needing CMake entirely by using a pre-compiled dlib wheel:

• Find a pre-built .whl file that's compatible with Python 3.4 and your App Service's OS/architecture (note: Python 3.4 is end-of-life, so you'll need to look for older wheel versions).
• Upload the wheel file to your App Service, then install it directly with:

  pip install ./dlib-<version>-cp34-none-<os_arch>.whl
  

• This bypasses the compilation step entirely, which can save you time and avoid CMake-related issues.

Quick Notes #

• Always store CMake or pre-built wheels in your App Service's persistent site/wwwroot directory—temporary storage gets cleared regularly, so your setup won't survive restarts otherwise.
• For Windows App Services, double-check that you download the correct architecture (x86 vs x64) to match your Python 3.4 installation.

内容的提问来源于stack exchange，提问作者Ilya Pukhov