Linking error trying to compile C code embedded with Python

I'm trying to import and run this python function inside C code:

import requestsimport jsonurl = 'http://127.0.0.1:5000/'def verify():    code = input('Show-me the code: ')    r = requests.post(url, data=json.dumps({'code': code}))    return r.json()

Here is the C code:

#include <Python.h>int main(void){    PyObject *myModuleString, *myModule, *myFunction, *myResult;    Py_Initialize();    myModuleString = PyUnicode_FromString((char*)"verify");    myModule = PyImport_Import(myModuleString);    myFunction = PyObject_GetAttrString(myModule,(char*)"verify");    myResult = PyObject_CallObject(myFunction, NULL);    const char* s = PyUnicode_AsUTF8(myResult);    printf("REPR: %s\n", s);    Py_Finalize();    return 0;}

Create the object file works fine:

$ gcc -c `python3.7-config --cflags --ldflags` source_code.c$

But it does not work at the end:

$ gcc source_code.o -o source_code.bin/usr/bin/ld: source_code.o: relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a PIE object; recompile with -fPIE/usr/bin/ld: final link failed: nonrepresentable section on outputcollect2: error: ld returned 1 exit status

The -fPIE argument also does not help:

$ gcc -c `python3.7-config --cflags --ldflags` -fPIE  source_code.c$$ gcc source_code.o -o source_code.bin/usr/bin/ld: source_code.o: in function `main':/home/user/source_code.c:7: undefined reference to `Py_Initialize'/usr/bin/ld: /home/user/source_code.c:9: undefined reference to `PyUnicode_FromString'/usr/bin/ld: /home/user/source_code.c:10: undefined reference to `PyImport_Import'/usr/bin/ld: /home/user/source_code.c:12: undefined reference to `PyObject_GetAttrString'/usr/bin/ld: /home/user/source_code.c:13: undefined reference to `PyObject_CallObject'/usr/bin/ld: /home/user/source_code.c:15: undefined reference to `PyUnicode_AsUTF8'/usr/bin/ld: /home/user/source_code.c:18: undefined reference to `Py_Finalize'collect2: error: ld returned 1 exit status

How can I define the references to generate the binary file?