在 pkg-config 搜索路径 REDHAT6.5 中找不到软件包 libffi

Question

I am trying to run setup.py related to a proprietary software installation and it has dependencies on libffi.

Since its Redhat 6.5 the python version was 2.6 and i installed python 2.7.

libffi was already installed and when i create a virtualenv and try installing the software by running the setup.py i get the following error:

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:15:17: error: ffi.h: No such file or directory
In file included from c/_cffi_backend.c:63:

yum list libffi
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
Installed Packages
libffi.x86_64                  3.0.5-3.2.el6                   @anaconda-RedHatEnterpriseLinux-201311111358.x86_64/6.5
Available Packages
libffi.i686                    3.0.5-3.2.el6                   rhel-local   

My query is how do we modify the pkg-config search path. to point to libffi.pc?

Answer 1

安装后试试：

sudo apt-get install libffi6 libffi-dev

Answer 2

You will need the development version of libffi to install libraries which depends on libffi :

sudo yum install libffi-devel

This worked for me

Answer 3

I had the same issue for MacOS. I assume the solution should be similar.

nano ~/.bash_profile

Add these two lines below to the end of your bash_profile so that it can be discovered

export PKG_CONFIG_PATH="/usr/local/opt/libffi/lib/pkgconfig"
export LDFLAGS="-L/usr/local/opt/libffi/lib" 

Save and quit and restart Terminal

Answer 4

Faced a similar issue while installing paramiko using pip3:

$ pip3 install paramiko

ERROR:

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

No package 'libffi' found c/_cffi_backend.c:15:17: fatal error: ffi.h: No such file or directory compilation terminated.

distutils.errors.DistutilsExecError: command 'x86_64-linux-gnu-gcc' failed with exit status 1

RESOLUTION:

$ sudo apt-get install libffi-dev
$ pip3 install paramiko

Successfully installed asn1crypto bcrypt cffi cryptography-1.2.3 paramiko-1.16.0 pycparser pynacl six-1.10.0

Answer 5

In my case libffi was not installed. So the below command fixed the issue.

sudo apt-get install libffi6 libffi-dev

Thanks to Harun-Ur-Rashid

Answer 6

I was using python 3.8 and getting the same error while wheel was trying to setup cffi on a conda environment. I tried installing libffi and libffi-dev (and exiting the terminal and reactivating the environment each time was installing something!) but with no luck. I then thought that maybe downgrading python to 3.7 might solve the issue. I did that in my conda environment (just activated the environment and ran conda install python=3.7 and then all of the sudden libffi was found! wheel was able to setup cffi and all were working like a charm!

Answer 7

尝试这个

sudo apt-get install -y python3-cffi

Answer 8

I got the same error from docker build. So I added just below command in my Dockerfile and solved my issue.

PS: my base image is alpine-linux

RUN apk update \
&& apk --no-cache --update add libffi-dev