I'm Trying to install cffi on fedora23 workstation using pip3. but m getting following error.
pip3 install cffi
Collecting cffi
Using cached cffi-1.4.2.tar.gz
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
gcc: error: /usr/lib/rpm/redhat/redhat-hardened-cc1: No such file or directory
gcc: error: /usr/lib/rpm/redhat/redhat-hardened-cc1: No such file or directory
No working compiler found, or bogus compiler options
passed to the compiler from Python's distutils module.
See the error messages above.
(If they are about -mno-fused-madd and you are on OS/X 10.8,
see http://stackoverflow.com/questions/22313407/ .)
----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-yweqr7c9/cffi
What should I do? Thankx in advance.
As pointed out in the comments by Tom, you have to install some dependencies before you can compile cffi. However, libffi-devel alone wasn't enough in my case, redhat-hardened-cc1 as part of redhat-rpm-config was also required. You can install them with
sudo dnf install libffi-devel redhat-rpm-config
Now you can run pip3 install cffi again and it should all compile.