Channels安装失败

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本文链接： https://blog.csdn.net/JosephThatwho/article/details/102573971

安装Channels时报如下错误

Building wheels for collected packages: cffi
  Building wheel for cffi (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: /home/starx/pythonvirtualenv/starxteam/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-0xuyhqlj/cffi/setup.py'"'"'; __file__='"'"'/tmp/pip-install-0xuyhqlj/cffi/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-4glw5w36 --python-tag cp37
       cwd: /tmp/pip-install-0xuyhqlj/cffi/
  Complete output (36 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build/lib.linux-x86_64-3.7
  creating build/lib.linux-x86_64-3.7/cffi
  copying cffi/__init__.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/cparser.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/error.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/vengine_cpy.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/commontypes.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/vengine_gen.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/pkgconfig.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/lock.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/cffi_opcode.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/model.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/recompiler.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/verifier.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/api.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/setuptools_ext.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/ffiplatform.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/backend_ctypes.py -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/_cffi_include.h -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/parse_c_type.h -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/_embedding.h -> build/lib.linux-x86_64-3.7/cffi
  copying cffi/_cffi_errors.h -> build/lib.linux-x86_64-3.7/cffi
  running build_ext
  building '_cffi_backend' extension
  creating build/temp.linux-x86_64-3.7
  creating build/temp.linux-x86_64-3.7/c
  x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/usr/include/ffi -I/usr/include/libffi -I/usr/include/python3.7m -I/home/starx/pythonvirtualenv/starxteam/include/python3.7m -c c/_cffi_backend.c -o build/temp.linux-x86_64-3.7/c/_cffi_backend.o
  c/_cffi_backend.c:15:10: fatal error: ffi.h: No such file or directory
   #include <ffi.h>
            ^~~~~~~
  compilation terminated.
  error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
  ----------------------------------------
  ERROR: Failed building wheel for cffi
  Running setup.py clean for cffi
Failed to build cffi
Installing collected packages: cffi, cryptography, autobahn, daphne, channels
    Running setup.py install for cffi ... error
    ERROR: Command errored out with exit status 1:
     command: /home/starx/pythonvirtualenv/starxteam/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-0xuyhqlj/cffi/setup.py'"'"'; __file__='"'"'/tmp/pip-install-0xuyhqlj/cffi/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-hfcm6679/install-record.txt --single-version-externally-managed --compile --install-headers /home/starx/pythonvirtualenv/starxteam/include/site/python3.7/cffi
         cwd: /tmp/pip-install-0xuyhqlj/cffi/
    Complete output (36 lines):
    running install
    running build
    running build_py
    creating build
    creating build/lib.linux-x86_64-3.7
    creating build/lib.linux-x86_64-3.7/cffi
    copying cffi/__init__.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/cparser.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/error.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/vengine_cpy.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/commontypes.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/vengine_gen.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/pkgconfig.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/lock.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/cffi_opcode.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/model.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/recompiler.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/verifier.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/api.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/setuptools_ext.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/ffiplatform.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/backend_ctypes.py -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/_cffi_include.h -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/parse_c_type.h -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/_embedding.h -> build/lib.linux-x86_64-3.7/cffi
    copying cffi/_cffi_errors.h -> build/lib.linux-x86_64-3.7/cffi
    running build_ext
    building '_cffi_backend' extension
    creating build/temp.linux-x86_64-3.7
    creating build/temp.linux-x86_64-3.7/c
    x86_64-linux-gnu-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/usr/include/ffi -I/usr/include/libffi -I/usr/include/python3.7m -I/home/starx/pythonvirtualenv/starxteam/include/python3.7m -c c/_cffi_backend.c -o build/temp.linux-x86_64-3.7/c/_cffi_backend.o
    c/_cffi_backend.c:15:10: fatal error: ffi.h: No such file or directory
     #include <ffi.h>
              ^~~~~~~
    compilation terminated.
    error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
    ----------------------------------------
ERROR: Command errored out with exit status 1: /home/starx/pythonvirtualenv/starxteam/bin/python3 -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-0xuyhqlj/cffi/setup.py'"'"'; __file__='"'"'/tmp/pip-install-0xuyhqlj/cffi/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-hfcm6679/install-record.txt --single-version-externally-managed --compile --install-headers /home/starx/pythonvirtualenv/starxteam/include/site/python3.7/cffi Check the logs for full command output.

尝试安装拓展包

sudo apt install build-essential libffi-dev python-dev

解决