python安装dlib库报错问题及解决方法

问题描述

我是debain 系的linux系统没遇到这个问题,在centos系统遇到的

Collecting dlib
  Downloading http://mirrors.cloud.aliyuncs.com/pypi/packages/63/92/05c3b98636661cb80d190a5a777dd94effcc14c0f6893222e5ca81e74fbc/dlib-19.19.0.tar.gz (3.2MB)
    100% |????????????????????????????????| 3.2MB 99.4MB/s
Building wheels for collected packages: dlib
  Running setup.py bdist_wheel for dlib ... error
  Complete output from command /usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-build-ld86u12i/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/tmp0zu3_xkcpip-wheel- --python-tag cp36:
  running bdist_wheel
  running build
  running build_py
  package init file 'dlib/__init__.py' not found (or not a regular file)
  running build_ext
  Building extension for Python 3.6.8 (default, Aug  7 2019, 17:28:10)
  Invoking CMake setup: 'cmake /tmp/pip-build-ld86u12i/dlib/tools/python -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=/tmp/pip-build-ld86u12i/dlib/build/lib.linux-x86_64-3.6 -DPYTHON_EXECUTABLE=/usr/bin/python3 -DCMAKE_BUILD_TYPE=Release'
  -- The C compiler identification is GNU 4.8.5
  -- The CXX compiler identification is unknown
  -- Check for working C compiler: /usr/bin/cc
  -- Check for working C compiler: /usr/bin/cc -- works
  -- Detecting C compiler ABI info
  -- Detecting C compiler ABI info - done
  CMake Error: your CXX compiler: "CMAKE_CXX_COMPILER-NOTFOUND" was not found.   Please set CMAKE_CXX_COMPILER to a valid compiler path or name.
  CMake Error: your CXX compiler: "CMAKE_CXX_COMPILER-NOTFOUND" was not found.   Please set CMAKE_CXX_COMPILER to a valid compiler path or name.
  -- Found PythonInterp: /usr/bin/python3 (found version "3.6.8")
  -- Found PythonLibs: python3.6m
  -- Performing Test HAS_CPP14_FLAG

主要报错就是

  CMake Error: your CXX compiler: "CMAKE_CXX_COMPILER-NOTFOUND" was not found.   Please set CMAKE_CXX_COMPILER to a valid compiler path or name.

解决办法

yum install cmake gcc-c++

另一个问题
另外一个地方可能会报错

fatal error: Python.h: No such file or directory
 #include <Python.h>
                   
compilation terminated.

这种报错很常见了

解决办法:

debain系

sudo apt install python3-dev

rehat系

yum install python3-devel

总结