fatal error: Python.h: No such file or directory?

Question

I am trying to build a shared library using a C extension file but first I have to generate the output file using the command below:<!-- language: lang-none --> gcc -Wall utilsmodule.c -o UtilcAfter executing the command, I get this error message:> utilsmodule.c:1:20: fatal error: Python.h: No such file or directorycompilation terminated.in fact I have tried all the suggested solutions over the internet but the problem still exists ... also I have no problem with `Python.h`. I managed to locate the file on my machine ... anybody has faced the same problem before??

Answer 1

You need to link the file in your gcc command. GCC doesn't know to automatically include `python.h` when compiling. This is a common mistake when starting out, but don't worry, in this case, the fix is easy!

Your new command will look something like this:

gcc -I/usr/include/python3.10 -L/usr/lib/python3.10 -lpython3.10 -Wall utilsmodule.c -o Utilc

Lets break down the added sections:

"-I" -- This tells GCC to include the specified folder (in this case, `/usr/include/python3.10`) when compiling your code.

"-L" -- This tells GCC where your python shared/static library are located.

"-l" -- This tells GCC to include a shared/static library from any of the default or specified library locations you gave it. In this case it will include "python3.10" from our "/usr/lib/python3.10" folder.

Let me know if you have any other troubles. I am more than willing to try to help you fix this issue to the best of my ability.