我正在尝试安装cryptography，但失败时出现unicode错误。
[root@localhost root]$ pip install "cryptography>=0.2.1"
Downloading/unpacking cryptography>=0.2.1
Downloading cryptography-0.5.4.tar.gz (320kB): 320kB downloaded
Running setup.py (path:/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/build/cryptography/setup.py) egg_info for package cryptography
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
c/_cffi_backend.c:13:17: error: ffi.h: No such file or directory
In file included from c/_cffi_backend.c:43:
c/malloc_closure.h:33: error: expected specifier-qualifier-list before âffi_closureâ
c/malloc_closure.h: In function âmore_coreâ:
c/malloc_closure.h:69: warning: division by zero
c/malloc_closure.h:96: error: âunion mmaped_blockâ has no member named ânextâ
c/malloc_closure.h: At top level:
c/malloc_closure.h:105: error: expected â)â before â*â token
c/malloc_closure.h:113: error: expected â=â, â,â, â;â, âasmâ or â__attribute__â before â*â token
c/_cffi_backend.c:209: error: expected specifier-qualifier-list before âffi_cifâ
c/_cffi_backend.c: In function âcdataowninggc_deallocâ:
c/_cffi_backend.c:1521: error: âffi_closureâ undeclared (first use in this function)
c/_cffi_backend.c:1521: error: (Each undeclared identifier is reported only once
c/_cffi_backend.c:1521: error: for each function it appears in.)
c/_cffi_backend.c:1521: error: âclosureâ undeclared (first use in this function)
c/_cffi_backend.c:1521: error: expected expression before â)â token
c/_cffi_backend.c:1524: warning: implicit declaration of function âcffi_closure_freeâ
c/_cffi_backend.c: In function âcdataowninggc_traverseâ:
c/_cffi_backend.c:1536: error: âffi_closureâ undeclared (first use in this function)
c/_cffi_backend.c:1536: error: âclosureâ undeclared (first use in this function)
c/_cffi_backend.c:1536: error: expected expression before â)â token
c/_cffi_backend.c: In function âcdataowninggc_clearâ:
c/_cffi_backend.c:1552: error: âffi_closureâ undeclared (first use in this function)
c/_cffi_backend.c:1552: error: âclosureâ undeclared (first use in this function)
c/_cffi_backend.c:1552: error: expected expression before â)â token
c/_cffi_backend.c: In function âcdataowning_reprâ:
c/_cffi_backend.c:1676: error: âffi_closureâ undeclared (first use in this function)
c/_cffi_backend.c:1676: error: expected expression before â)â token
c/_cffi_backend.c: At top level:
c/_cffi_backend.c:2222: error: expected declaration specifiers or â...â before âffi_abiâ
c/_cffi_backend.c: In function âcdata_callâ:
c/_cffi_backend.c:2356: error: âffi_abiâ undeclared (first use in this function)
c/_cffi_backend.c:2356: error: expected â;â before âfabiâ
c/_cffi_backend.c:2398: error: âfabiâ undeclared (first use in this function)
c/_cffi_backend.c:2402: error: too many arguments to function âfb_prepare_cifâ
c/_cffi_backend.c:2407: error: âcif_description_tâ has no member named âexchange_sizeâ
c/_cffi_backend.c:2417: error: âcif_description_tâ has no member named âexchange_offset_argâ
c/_cffi_backend.c:2447: error: âcif_description_tâ has no member named âexchange_offset_argâ
c/_cffi_backend.c:2452: warning: implicit declaration of function âffi_callâ
c/_cffi_backend.c:2452: error: âcif_description_tâ has no member named âcifâ
c/_cffi_backend.c: In function âb_new_primitive_typeâ:
c/_cffi_backend.c:3356: error: âffi_typeâ undeclared (first use in this function)
c/_cffi_backend.c:3356: error: âffitypeâ undeclared (first use in this function)
c/_cffi_backend.c:3377: error: âffi_type_sint8â undeclared (first use in this function)
c/_cffi_backend.c:3378: error: âffi_type_sint16â undeclared (first use in this function)
c/_cffi_backend.c:3379: error: âffi_type_sint32â undeclared (first use in this function)
c/_cffi_backend.c:3380: error: âffi_type_sint64â undeclared (first use in this function)
c/_cffi_backend.c:3386: error: âffi_type_floatâ undeclared (first use in this function)
c/_cffi_backend.c:3388: error: âffi_type_doubleâ undeclared (first use in this function)
c/_cffi_backend.c:3390: error: âffi_type_longdoubleâ undeclared (first use in this function)
c/_cffi_backend.c:3396: error: âffi_type_uint8â undeclared (first use in this function)
c/_cffi_backend.c:3397: error: âffi_type_uint16â undeclared (first use in this function)
c/_cffi_backend.c:3398: error: âffi_type_uint32â undeclared (first use in this function)
c/_cffi_backend.c:3399: error: âffi_type_uint64â undeclared (first use in this function)
c/_cffi_backend.c: At top level:
c/_cffi_backend.c:3953: error: expected specifier-qualifier-list before âffi_typeâ
c/_cffi_backend.c:3972: error: expected â=â, â,â, â;â, âasmâ or â__attribute__â before â*â token
c/_cffi_backend.c: In function âfb_buildâ:
c/_cffi_backend.c:4103: error: âstruct funcbuilder_sâ has no member named âatypesâ
c/_cffi_backend.c:4103: error: âffi_typeâ undeclared (first use in this function)
c/_cffi_backend.c:4103: error: expected expression before â)â token
c/_cffi_backend.c:4104: error: âstruct funcbuilder_sâ has no member named ânargsâ
c/_cffi_backend.c:4107: error: âstruct funcbuilder_sâ has no member named ârtypeâ
c/_cffi_backend.c:4107: warning: implicit declaration of function âfb_fill_typeâ
c/_cffi_backend.c:4115: error: âcif_description_tâ has no member named âexchange_offset_argâ
c/_cffi_backend.c:4118: error: âstruct funcbuilder_sâ has no member named ârtypeâ
c/_cffi_backend.c:4119: error: âffi_argâ undeclared (first use in this function)
c/_cffi_backend.c:4129: error: âatypeâ undeclared (first use in this function)
c/_cffi_backend.c:4142: error: âstruct funcbuilder_sâ has no member named âatypesâ
c/_cffi_backend.c:4143: error: âstruct funcbuilder_sâ has no member named âatypesâ
c/_cffi_backend.c:4146: error: âcif_description_tâ has no member named âexchange_offset_argâ
c/_cffi_backend.c:4153: error: âcif_description_tâ has no member named âexchange_sizeâ
c/_cffi_backend.c: In function âfb_build_nameâ:
c/_cffi_backend.c:4175: error: âstruct funcbuilder_sâ has no member named ânargsâ
c/_cffi_backend.c:4184: error: âstruct funcbuilder_sâ has no member named âfctâ
c/_cffi_backend.c:4186: error: âstruct funcbuilder_sâ has no member named âfctâ
c/_cffi_backend.c: In function âfb_prepare_ctypeâ:
c/_cffi_backend.c:4227: error: âstruct funcbuilder_sâ has no member named âfctâ
c/_cffi_backend.c:4237: error: âstruct funcbuilder_sâ has no member named âfctâ
c/_cffi_backend.c: At top level:
c/_cffi_backend.c:4257: error: expected declaration specifiers or â...â before âffi_abiâ
c/_cffi_backend.c: In function âfb_prepare_cifâ:
c/_cffi_backend.c:4284: warning: implicit declaration of function âffi_prep_cifâ
c/_cffi_backend.c:4284: error: âcif_description_tâ has no member named âcifâ
c/_cffi_backend.c:4284: error: âfabiâ undeclared (first use in this function)
c/_cffi_backend.c:4284: error: âstruct funcbuilder_sâ has no member named ânargsâ
c/_cffi_backend.c:4285: error: âstruct funcbuilder_sâ has no member named ârtypeâ
c/_cffi_backend.c:4285: error: âstruct funcbuilder_sâ has no member named âatypesâ
c/_cffi_backend.c:4285: error: âFFI_OKâ undeclared (first use in this function)
c/_cffi_backend.c: In function âb_new_function_typeâ:
c/_cffi_backend.c:4302: error: âFFI_DEFAULT_ABIâ undeclared (first use in this function)
c/_cffi_backend.c:4340: error: too many arguments to function âfb_prepare_cifâ
c/_cffi_backend.c:4348: error: âstruct funcbuilder_sâ has no member named ânargsâ
c/_cffi_backend.c:4358: error: âstruct funcbuilder_sâ has no member named ânargsâ
c/_cffi_backend.c: In function âconvert_from_object_fficallbackâ:
c/_cffi_backend.c:4382: error: âffi_argâ undeclared (first use in this function)
c/_cffi_backend.c: At top level:
c/_cffi_backend.c:4454: error: expected â)â before â*â token
c/_cffi_backend.c: In function âb_callbackâ:
c/_cffi_backend.c:4525: error: âffi_closureâ undeclared (first use in this function)
c/_cffi_backend.c:4525: error: âclosureâ undeclared (first use in this function)
c/_cffi_backend.c:4546: error: âffi_argâ undeclared (first use in this function)
c/_cffi_backend.c:4564: warning: implicit declaration of function âcffi_closure_allocâ
c/_cffi_backend.c:4581: warning: implicit declaration of function âffi_prep_closureâ
c/_cffi_backend.c:4581: error: âcif_description_tâ has no member named âcifâ
c/_cffi_backend.c:4582: error: âinvoke_callbackâ undeclared (first use in this function)
c/_cffi_backend.c:4582: error: âFFI_OKâ undeclared (first use in this function)
c/_cffi_backend.c: In function âinit_cffi_backendâ:
c/_cffi_backend.c:5511: error: âFFI_DEFAULT_ABIâ undeclared (first use in this function)
compiling '_configtest.c':
__thread int some_threadlocal_variable_42;
Traceback (most recent call last):
File "<string>", line 17, in <module>
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/build/cryptography/setup.py", line 174, in <module>
"test": PyTest,
File "/usr/lib64/python2.6/distutils/core.py", line 113, in setup
_setup_distribution = dist = klass(attrs)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/dist.py", line 262, in __init__
self.fetch_build_eggs(attrs['setup_requires'])
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/dist.py", line 287, in fetch_build_eggs
replace_conflicting=True,
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/pkg_resources.py", line 631, in resolve
dist = best[req.key] = env.best_match(req, ws, installer)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/pkg_resources.py", line 874, in best_match
return self.obtain(req, installer)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/pkg_resources.py", line 886, in obtain
return installer(requirement)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/dist.py", line 338, in fetch_build_egg
return cmd.easy_install(req)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 613, in easy_install
return self.install_item(spec, dist.location, tmpdir, deps)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 643, in install_item
dists = self.install_eggs(spec, download, tmpdir)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 833, in install_eggs
return self.build_and_install(setup_script, setup_base)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 1055, in build_and_install
self.run_setup(setup_script, setup_base, args)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 1043, in run_setup
raise DistutilsError("Setup script exited with %s" % (v.args[0],))
distutils.errors.DistutilsError: Setup script exited with error: command 'gcc' failed with exit status 1
Complete output from command python setup.py egg_info:
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
Package libffi was not found in the pkg-config search path.
Perhaps you should add the directory containing `libffi.pc'
to the PKG_CONFIG_PATH environment variable
No package 'libffi' found
c/_cffi_backend.c:13:17: error: ffi.h: No such file or directory
In file included from c/_cffi_backend.c:43:
c/malloc_closure.h:33: error: expected specifier-qualifier-list before âffi_closureâ
c/malloc_closure.h: In function âmore_coreâ:
c/malloc_closure.h:69: warning: division by zero
c/malloc_closure.h:96: error: âunion mmaped_blockâ has no member named ânextâ
c/malloc_closure.h: At top level:
c/malloc_closure.h:105: error: expected â)â before â*â token
c/malloc_closure.h:113: error: expected â=â, â,â, â;â, âasmâ or â__attribute__â before â*â token
c/_cffi_backend.c:209: error: expected specifier-qualifier-list before âffi_cifâ
c/_cffi_backend.c: In function âcdataowninggc_deallocâ:
c/_cffi_backend.c:1521: error: âffi_closureâ undeclared (first use in this function)
c/_cffi_backend.c:1521: error: (Each undeclared identifier is reported only once
c/_cffi_backend.c:1521: error: for each function it appears in.)
c/_cffi_backend.c:1521: error: âclosureâ undeclared (first use in this function)
c/_cffi_backend.c:1521: error: expected expression before â)â token
c/_cffi_backend.c:1524: warning: implicit declaration of function âcffi_closure_freeâ
c/_cffi_backend.c: In function âcdataowninggc_traverseâ:
c/_cffi_backend.c:1536: error: âffi_closureâ undeclared (first use in this function)
c/_cffi_backend.c:1536: error: âclosureâ undeclared (first use in this function)
c/_cffi_backend.c:1536: error: expected expression before â)â token
c/_cffi_backend.c: In function âcdataowninggc_clearâ:
c/_cffi_backend.c:1552: error: âffi_closureâ undeclared (first use in this function)
c/_cffi_backend.c:1552: error: âclosureâ undeclared (first use in this function)
c/_cffi_backend.c:1552: error: expected expression before â)â token
c/_cffi_backend.c: In function âcdataowning_reprâ:
c/_cffi_backend.c:1676: error: âffi_closureâ undeclared (first use in this function)
c/_cffi_backend.c:1676: error: expected expression before â)â token
c/_cffi_backend.c: At top level:
c/_cffi_backend.c:2222: error: expected declaration specifiers or â...â before âffi_abiâ
c/_cffi_backend.c: In function âcdata_callâ:
c/_cffi_backend.c:2356: error: âffi_abiâ undeclared (first use in this function)
c/_cffi_backend.c:2356: error: expected â;â before âfabiâ
c/_cffi_backend.c:2398: error: âfabiâ undeclared (first use in this function)
c/_cffi_backend.c:2402: error: too many arguments to function âfb_prepare_cifâ
c/_cffi_backend.c:2407: error: âcif_description_tâ has no member named âexchange_sizeâ
c/_cffi_backend.c:2417: error: âcif_description_tâ has no member named âexchange_offset_argâ
c/_cffi_backend.c:2447: error: âcif_description_tâ has no member named âexchange_offset_argâ
c/_cffi_backend.c:2452: warning: implicit declaration of function âffi_callâ
c/_cffi_backend.c:2452: error: âcif_description_tâ has no member named âcifâ
c/_cffi_backend.c: In function âb_new_primitive_typeâ:
c/_cffi_backend.c:3356: error: âffi_typeâ undeclared (first use in this function)
c/_cffi_backend.c:3356: error: âffitypeâ undeclared (first use in this function)
c/_cffi_backend.c:3377: error: âffi_type_sint8â undeclared (first use in this function)
c/_cffi_backend.c:3378: error: âffi_type_sint16â undeclared (first use in this function)
c/_cffi_backend.c:3379: error: âffi_type_sint32â undeclared (first use in this function)
c/_cffi_backend.c:3380: error: âffi_type_sint64â undeclared (first use in this function)
c/_cffi_backend.c:3386: error: âffi_type_floatâ undeclared (first use in this function)
c/_cffi_backend.c:3388: error: âffi_type_doubleâ undeclared (first use in this function)
c/_cffi_backend.c:3390: error: âffi_type_longdoubleâ undeclared (first use in this function)
c/_cffi_backend.c:3396: error: âffi_type_uint8â undeclared (first use in this function)
c/_cffi_backend.c:3397: error: âffi_type_uint16â undeclared (first use in this function)
c/_cffi_backend.c:3398: error: âffi_type_uint32â undeclared (first use in this function)
c/_cffi_backend.c:3399: error: âffi_type_uint64â undeclared (first use in this function)
c/_cffi_backend.c: At top level:
c/_cffi_backend.c:3953: error: expected specifier-qualifier-list before âffi_typeâ
c/_cffi_backend.c:3972: error: expected â=â, â,â, â;â, âasmâ or â__attribute__â before â*â token
c/_cffi_backend.c: In function âfb_buildâ:
c/_cffi_backend.c:4103: error: âstruct funcbuilder_sâ has no member named âatypesâ
c/_cffi_backend.c:4103: error: âffi_typeâ undeclared (first use in this function)
c/_cffi_backend.c:4103: error: expected expression before â)â token
c/_cffi_backend.c:4104: error: âstruct funcbuilder_sâ has no member named ânargsâ
c/_cffi_backend.c:4107: error: âstruct funcbuilder_sâ has no member named ârtypeâ
c/_cffi_backend.c:4107: warning: implicit declaration of function âfb_fill_typeâ
c/_cffi_backend.c:4115: error: âcif_description_tâ has no member named âexchange_offset_argâ
c/_cffi_backend.c:4118: error: âstruct funcbuilder_sâ has no member named ârtypeâ
c/_cffi_backend.c:4119: error: âffi_argâ undeclared (first use in this function)
c/_cffi_backend.c:4129: error: âatypeâ undeclared (first use in this function)
c/_cffi_backend.c:4142: error: âstruct funcbuilder_sâ has no member named âatypesâ
c/_cffi_backend.c:4143: error: âstruct funcbuilder_sâ has no member named âatypesâ
c/_cffi_backend.c:4146: error: âcif_description_tâ has no member named âexchange_offset_argâ
c/_cffi_backend.c:4153: error: âcif_description_tâ has no member named âexchange_sizeâ
c/_cffi_backend.c: In function âfb_build_nameâ:
c/_cffi_backend.c:4175: error: âstruct funcbuilder_sâ has no member named ânargsâ
c/_cffi_backend.c:4184: error: âstruct funcbuilder_sâ has no member named âfctâ
c/_cffi_backend.c:4186: error: âstruct funcbuilder_sâ has no member named âfctâ
c/_cffi_backend.c: In function âfb_prepare_ctypeâ:
c/_cffi_backend.c:4227: error: âstruct funcbuilder_sâ has no member named âfctâ
c/_cffi_backend.c:4237: error: âstruct funcbuilder_sâ has no member named âfctâ
c/_cffi_backend.c: At top level:
c/_cffi_backend.c:4257: error: expected declaration specifiers or â...â before âffi_abiâ
c/_cffi_backend.c: In function âfb_prepare_cifâ:
c/_cffi_backend.c:4284: warning: implicit declaration of function âffi_prep_cifâ
c/_cffi_backend.c:4284: error: âcif_description_tâ has no member named âcifâ
c/_cffi_backend.c:4284: error: âfabiâ undeclared (first use in this function)
c/_cffi_backend.c:4284: error: âstruct funcbuilder_sâ has no member named ânargsâ
c/_cffi_backend.c:4285: error: âstruct funcbuilder_sâ has no member named ârtypeâ
c/_cffi_backend.c:4285: error: âstruct funcbuilder_sâ has no member named âatypesâ
c/_cffi_backend.c:4285: error: âFFI_OKâ undeclared (first use in this function)
c/_cffi_backend.c: In function âb_new_function_typeâ:
c/_cffi_backend.c:4302: error: âFFI_DEFAULT_ABIâ undeclared (first use in this function)
c/_cffi_backend.c:4340: error: too many arguments to function âfb_prepare_cifâ
c/_cffi_backend.c:4348: error: âstruct funcbuilder_sâ has no member named ânargsâ
c/_cffi_backend.c:4358: error: âstruct funcbuilder_sâ has no member named ânargsâ
c/_cffi_backend.c: In function âconvert_from_object_fficallbackâ:
c/_cffi_backend.c:4382: error: âffi_argâ undeclared (first use in this function)
c/_cffi_backend.c: At top level:
c/_cffi_backend.c:4454: error: expected â)â before â*â token
c/_cffi_backend.c: In function âb_callbackâ:
c/_cffi_backend.c:4525: error: âffi_closureâ undeclared (first use in this function)
c/_cffi_backend.c:4525: error: âclosureâ undeclared (first use in this function)
c/_cffi_backend.c:4546: error: âffi_argâ undeclared (first use in this function)
c/_cffi_backend.c:4564: warning: implicit declaration of function âcffi_closure_allocâ
c/_cffi_backend.c:4581: warning: implicit declaration of function âffi_prep_closureâ
c/_cffi_backend.c:4581: error: âcif_description_tâ has no member named âcifâ
c/_cffi_backend.c:4582: error: âinvoke_callbackâ undeclared (first use in this function)
c/_cffi_backend.c:4582: error: âFFI_OKâ undeclared (first use in this function)
c/_cffi_backend.c: In function âinit_cffi_backendâ:
c/_cffi_backend.c:5511: error: âFFI_DEFAULT_ABIâ undeclared (first use in this function)
compiling '_configtest.c':
__thread int some_threadlocal_variable_42;
Traceback (most recent call last):
File "<string>", line 17, in <module>
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/build/cryptography/setup.py", line 174, in <module>
"test": PyTest,
File "/usr/lib64/python2.6/distutils/core.py", line 113, in setup
_setup_distribution = dist = klass(attrs)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/dist.py", line 262, in __init__
self.fetch_build_eggs(attrs['setup_requires'])
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/dist.py", line 287, in fetch_build_eggs
replace_conflicting=True,
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/pkg_resources.py", line 631, in resolve
dist = best[req.key] = env.best_match(req, ws, installer)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/pkg_resources.py", line 874, in best_match
return self.obtain(req, installer)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/pkg_resources.py", line 886, in obtain
return installer(requirement)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/dist.py", line 338, in fetch_build_egg
return cmd.easy_install(req)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 613, in easy_install
return self.install_item(spec, dist.location, tmpdir, deps)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 643, in install_item
dists = self.install_eggs(spec, download, tmpdir)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 833, in install_eggs
return self.build_and_install(setup_script, setup_base)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 1055, in build_and_install
self.run_setup(setup_script, setup_base, args)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/setuptools/command/easy_install.py", line 1043, in run_setup
raise DistutilsError("Setup script exited with %s" % (v.args[0],))
distutils.errors.DistutilsError: Setup script exited with error: command 'gcc' failed with exit status 1
----------------------------------------
Cleaning up...
Command python setup.py egg_info failed with error code 1 in /home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/build/cryptography
Traceback (most recent call last):
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/bin/pip", line 8, in <module>
load_entry_point('pip==1.5.6', 'console_scripts', 'pip')()
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/pip/__init__.py", line 185, in main
return command.main(cmd_args)
File "/home/nileshkumar-govindbhai.patel/workspaces/gozer/horizon/.venv/lib/python2.6/site-packages/pip/basecommand.py", line 161, in main
text = '\n'.join(complete_log)
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe2 in position 75: ordinal not in range(128)
它给出了unicode错误:(
答案 0 :(得分：4)
您的实际问题似乎是您没有安装libffi。您可以在设置步骤中看到数百条无法找到libffi的消息，并且在尝试包含ffi.h时出现C编译器错误，等等。所以，你需要做的就是安装它。
这是一个C库，而不是Python库。您的平台可能有一个包，可以使用yum或apt或brew或port或其他任何方式安装;如果没有，您可以下载并手动安装。 （IIRC，您可以./configure && make install，但请阅读文档。）在某些平台上，您可能还需要libffi-devel或libffi-dev或libffi-libs或类似的软件包。
此外，您没有libffi的事实也暗示您可能没有CPython开发文件（因为在大多数平台上，它们依赖于libffi），这意味着您和＃39;一旦你越过这个问题就会遇到另一个问题。这些可能位于名为python等python-devel的单独包中（或者python27-devel或类似）。
那么，最后有UnicodeError的是什么？好吧，你的设置确实有些麻烦。在您的所有输出中，您会收到âmore_coreâ之类的内容，显然每个'打印为â。这有点像Latin-1和UTF-8 mojibake，但很难确定。
无论如何，在某些时候，Python正在尝试生成一些输出（很可能是实际异常的异常消息），其中包含â个字符（注意它正在抱怨{{1} }}，0xe2是'\xe2'.decode('latin-1')）。但它未能检测到您的终端，因此它尝试将字符串编码为ASCII，当然这会失败，因此它会引发u'â'，这会隐藏真正的错误。 （这是2.x设计几乎不可能解决的事情之一，没有大量的hackery，但是很早就在3.x分支中修复了，并且从那时起进一步改进。不幸的是，你和＃39;仍然使用2.7，所以这对你没有帮助。）