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I am trying to compile c from python.

There shows the following errors after I executing the following commands:

-Wall -I/usr/include/python3.5/config-3.5m-x86_64-linux-gnu/libpython3.5m.a -lpython35 -o prime_numbers_2 prime_numbers_2.c

prime_numbers_2.c:11:20: fatal error: Python.h: No Such File or
directory compilation terminated.

I also search in the directory /usr/lib with the following command:

find . -name Python.h

but there is no Python.h in that directory.

How can I fix these problems? Should I reinstall Python3.5.2?

PaulTsai
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2 Answers2

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You should install the development package of Python which contains header files and the library of Python.

sudo apt-get install python3-dev

Sources:

Melebius
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  • I remove and reinstall python3-dev and check the compile links, there still shows some errors below. – PaulTsai Aug 31 '16 at 12:33
  • paultsai@paultsai-virtual-machine:~/cython/ex2$ gcc -Wall -I/usr/include/python3.5/ -lpython3.5 -L/usr/lib/python3.5/config-3.5m-x86_64-linux-gnu/ -o prime_numbers_2 prime_numbers_2.c – PaulTsai Aug 31 '16 at 12:41
  • /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/crt1.o: in function _start: (.text+0x20): undefined reference to「main」 /tmp/ccgBhADM.o: in function __Pyx_PyObject_GetAttrStr: prime_numbers_2.c:(.text+0x61): undefined reference to「PyObject_GetAttr」 /tmp/ccgBhADM.o: in function __pyx_pf_15prime_numbers_2_is_prime: prime_numbers_2.c:(.text+0xf2): undefined reference to「PyTuple_New」 prime_numbers_2.c:(.text+0x24b): undefined reference to「PyList_Type」 prime_numbers_2.c:(.text+0x267): undefined reference to「PyTuple_Type」 – PaulTsai Aug 31 '16 at 12:42
  • There can be a problem with locations of the files mentioned in -l and -L options. Check if they exist and that -l points to a regular file and -L to a directory. – Melebius Aug 31 '16 at 13:09
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For those people who came here and are using pypy, make sure to do:

sudo apt-get install pypy3-dev
Justin Furuness
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