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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