I try to install install some library with the pip command. But when I try to install it I get an error like #include <ffi.h> . How can I solve this issue?
error: command 'gcc' failed with exit status 1
There may be different causes for this issue but installing libffi development library will solve your problem.
sudo apt install libffi-dev for Ubuntu.
For others look followin link https://www.poftut.com/pip-ffi-h-gcc-error/
Are you using "gcc" with "verbose " option?
In general - when #include fails - the compiler could not locate the file.
Sometime just wrong #include syntax such as #include <file> or $include "file" will fix the "problem".