WIN10安装：

首先改一下下载源：

1.C:\Users\xx\pip，新建文件pip.ini
2.文件里面输入：

[global] index-url = https://pypi.tuna.tsinghua.edu.cn/simple [install] trusted-host=mirrors.aliyun.com

然后安装vs2019

需要勾选c++那一项。

安装face_recognition步骤如下

命令行输入：

1.python -m pip install --upgrade pip
2.pip install cmake
3.pip install dlib
4.pip install face_recognition

报错原因及解决：

1.pip install dlib出现：


      You must use Visual Studio to build a python extension on windows. If you are getting this error it means you have not installed Visual C++. Note that there are many flavors of Visual Studio, like Visual Studio for C# development. You need to install Visual Studio for C++.

说明没有安装Visual Studio

安装vs2019，勾选c++那一项进行安装即可解决。

2 . pip install dlib出现ERROR: CMake must be installed to build dlib

先进行pip install cmake再pip install dlib

Ubuntu 20.04安装

改下载源

mkdir ~/.pip // 创建隐藏的文件夹(注意用户是root还是普通user) vim ~/.pip/pip.conf // 创建一个pip.conf文件 // 在pip.conf中粘贴进下面内容(豆瓣源) [global] index-url = http://pypi.douban.com/simple [install] trusted-host=pypi.douban.com // wq保存一下就行了

然后终端输入：

CC=gcc CXX=g++ pip install face_recognition

报错原因及解决：

Building wheels for collected packages: dlib Building wheel for dlib (setup.py) ... error ERROR: Command errored out with exit status 1: command: /usr/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-9n08rmx4/dlib/setup.py'"'"'; __file__='"'"'/tmp/pip-install-9n08rmx4/dlib/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d /tmp/pip-wheel-ajvzzs1b cwd: /tmp/pip-install-9n08rmx4/dlib/ Complete output (50 lines): running bdist_wheel running build running build_py package init file 'tools/python/dlib/__init__.py' not found (or not a regular file) running build_ext Building extension for Python 3.8.10 (default, Sep 28 2021, 16:10:42) Invoking CMake setup: 'cmake /tmp/pip-install-9n08rmx4/dlib/tools/python -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=/tmp/pip-install-9n08rmx4/dlib/build/lib.linux-x86_64-3.8 -DPYTHON_EXECUTABLE=/usr/bin/python3 -DCMAKE_BUILD_TYPE=Release' CMake Error at /usr/share/cmake-3.16/Modules/CMakeDetermineCCompiler.cmake:49 (message): Could not find compiler set in environment variable CC: /usr/local/bin/gcc. Call Stack (most recent call first): CMakeLists.txt:14 (project) CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage -- Configuring incomplete, errors occurred! See also "/tmp/pip-install-9n08rmx4/dlib/build/temp.linux-x86_64-3.8/CMakeFiles/CMakeOutput.log". Traceback (most recent call last): File "<string>", line 1, in <module> File "/tmp/pip-install-9n08rmx4/dlib/setup.py", line 222, in <module> setup( File "/usr/lib/python3/dist-packages/setuptools/__init__.py", line 144, in setup return distutils.core.setup(**attrs) File "/usr/lib/python3.8/distutils/core.py", line 148, in setup dist.run_commands() File "/usr/lib/python3.8/distutils/dist.py", line 966, in run_commands self.run_command(cmd) File "/usr/lib/python3.8/distutils/dist.py", line 985, in run_command cmd_obj.run() File "/usr/lib/python3/dist-packages/wheel/bdist_wheel.py", line 223, in run self.run_command('build') File "/usr/lib/python3.8/distutils/cmd.py", line 313, in run_command self.distribution.run_command(command) File "/usr/lib/python3.8/distutils/dist.py", line 985, in run_command cmd_obj.run() File "/usr/lib/python3.8/distutils/command/build.py", line 135, in run self.run_command(cmd_name) File "/usr/lib/python3.8/distutils/cmd.py", line 313, in run_command self.distribution.run_command(command) File "/usr/lib/python3.8/distutils/dist.py", line 985, in run_command cmd_obj.run() File "/tmp/pip-install-9n08rmx4/dlib/setup.py", line 134, in run self.build_extension(ext) File "/tmp/pip-install-9n08rmx4/dlib/setup.py", line 171, in build_extension subprocess.check_call(cmake_setup, cwd=build_folder) File "/usr/lib/python3.8/subprocess.py", line 364, in check_call raise CalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command '['cmake', '/tmp/pip-install-9n08rmx4/dlib/tools/python', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=/tmp/pip-install-9n08rmx4/dlib/build/lib.linux-x86_64-3.8', '-DPYTHON_EXECUTABLE=/usr/bin/python3', '-DCMAKE_BUILD_TYPE=Release']' returned non-zero exit status 1. ---------------------------------------- ERROR: Failed building wheel for dlib Running setup.py clean for dlib Failed to build dlib Installing collected packages: face-recognition-models, dlib, face-recognition Running setup.py install for dlib ... error ERROR: Command errored out with exit status 1: command: /usr/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-9n08rmx4/dlib/setup.py'"'"'; __file__='"'"'/tmp/pip-install-9n08rmx4/dlib/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-476x_oyc/install-record.txt --single-version-externally-managed --user --prefix= --compile --install-headers /home/jym/.local/include/python3.8/dlib cwd: /tmp/pip-install-9n08rmx4/dlib/ Complete output (52 lines): running install running build running build_py package init file 'tools/python/dlib/__init__.py' not found (or not a regular file) running build_ext Building extension for Python 3.8.10 (default, Sep 28 2021, 16:10:42) Invoking CMake setup: 'cmake /tmp/pip-install-9n08rmx4/dlib/tools/python -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=/tmp/pip-install-9n08rmx4/dlib/build/lib.linux-x86_64-3.8 -DPYTHON_EXECUTABLE=/usr/bin/python3 -DCMAKE_BUILD_TYPE=Release' CMake Error at /usr/share/cmake-3.16/Modules/CMakeDetermineCCompiler.cmake:49 (message): Could not find compiler set in environment variable CC: /usr/local/bin/gcc. Call Stack (most recent call first): CMakeLists.txt:14 (project) CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage -- Configuring incomplete, errors occurred! See also "/tmp/pip-install-9n08rmx4/dlib/build/temp.linux-x86_64-3.8/CMakeFiles/CMakeOutput.log". Traceback (most recent call last): File "<string>", line 1, in <module> File "/tmp/pip-install-9n08rmx4/dlib/setup.py", line 222, in <module> setup( File "/usr/lib/python3/dist-packages/setuptools/__init__.py", line 144, in setup return distutils.core.setup(**attrs) File "/usr/lib/python3.8/distutils/core.py", line 148, in setup dist.run_commands() File "/usr/lib/python3.8/distutils/dist.py", line 966, in run_commands self.run_command(cmd) File "/usr/lib/python3.8/distutils/dist.py", line 985, in run_command cmd_obj.run() File "/usr/lib/python3/dist-packages/setuptools/command/install.py", line 61, in run return orig.install.run(self) File "/usr/lib/python3.8/distutils/command/install.py", line 589, in run self.run_command('build') File "/usr/lib/python3.8/distutils/cmd.py", line 313, in run_command self.distribution.run_command(command) File "/usr/lib/python3.8/distutils/dist.py", line 985, in run_command cmd_obj.run() File "/usr/lib/python3.8/distutils/command/build.py", line 135, in run self.run_command(cmd_name) File "/usr/lib/python3.8/distutils/cmd.py", line 313, in run_command self.distribution.run_command(command) File "/usr/lib/python3.8/distutils/dist.py", line 985, in run_command cmd_obj.run() File "/tmp/pip-install-9n08rmx4/dlib/setup.py", line 134, in run self.build_extension(ext) File "/tmp/pip-install-9n08rmx4/dlib/setup.py", line 171, in build_extension subprocess.check_call(cmake_setup, cwd=build_folder) File "/usr/lib/python3.8/subprocess.py", line 364, in check_call raise CalledProcessError(retcode, cmd) subprocess.CalledProcessError: Command '['cmake', '/tmp/pip-install-9n08rmx4/dlib/tools/python', '-DCMAKE_LIBRARY_OUTPUT_DIRECTORY=/tmp/pip-install-9n08rmx4/dlib/build/lib.linux-x86_64-3.8', '-DPYTHON_EXECUTABLE=/usr/bin/python3', '-DCMAKE_BUILD_TYPE=Release']' returned non-zero exit status 1. ---------------------------------------- ERROR: Command errored out with exit status 1: /usr/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-9n08rmx4/dlib/setup.py'"'"'; __file__='"'"'/tmp/pip-install-9n08rmx4/dlib/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record /tmp/pip-record-476x_oyc/install-record.txt --single-version-externally-managed --user --prefix= --compile --install-headers /home/jym/.local/include/python3.8/dlib Check the logs for full command output.

在终端输入：

CC=gcc CXX=g++

再进行pip install face_recognition就可以了

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