gcc : Unable to find Python.h, When its there in /usr/includes/python2.7?

Question

My C code:

#include<stdio.h>
#include "Python.h"

int main()
{
    printf("Hello World");
    return 0;
}

I have python-dev installed for python2.7. Moreover, Python.h is available in /usr/include/python2.7.

gcc myfile.c # Python.h: No such file or directory

I even tried : gcc -L/usr/include/python2.7/ myfile.c # Python.h: No such file or directory

I tried building a python c module ujson with pip that uses Python.h, it was able to compile.

What am I missing / doing wrong ?

use -I in place of -L, better solution: write a makefile (yeah it will require some study, but the effort is worth while). Compiling on the command line can be a big pain — BigMike
– BigMike, Commented Jun 8, 2012 at 8:50
Even better, if this code is a Python extension: write a setup.py file and use distutils. — Fred Foo
– Fred Foo, Commented Jun 8, 2012 at 9:40

mata · Accepted Answer · 2012-06-08 08:50:30Z

10

It should be -I, not -L:

gcc -I/usr/include/python2.7 myfile.c

answered Jun 8, 2012 at 8:50

mata

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Community · Accepted Answer · 2017-05-23 12:14:08Z

0

Use

#include <Python.h>

instead of

#include "Python.h"

to include the header file. The Python.h file should be the first file which is included.

@see Extending Python with C or C++ (Section 1.1 Note)

Since Python may define some pre-processor definitions which affect the standard headers on some systems, you must include Python.h before any standard headers are included.

edited May 23, 2017 at 12:14

CommunityBot

11 silver badge

answered Jun 8, 2012 at 8:57

Nicola Coretti

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