vlad.website
Strategies for finding binary dependencies
1# © NONE
2# SPDX-License-Identifier: CC0-1.0
3
4from cffi import FFI
5ffibuilder = FFI()
6
7ffibuilder.set_source("_example",
8 r""" // passed to the real C compiler,
9 // contains implementation of things declared in cdef()
10 #include <sys/types.h>
11 #include <pwd.h>
12
13 // We can also define custom wrappers or other functions
14 // here (this is an example only):
15 static struct passwd *get_pw_for_root(void) {
16 return getpwuid(0);
17 }
18 """,
19 libraries=[]) # or a list of libraries to link with
20 # (more arguments like setup.py's Extension class:
21 # include_dirs=[..], extra_objects=[..], and so on)
22
23ffibuilder.cdef("""
24 // declarations that are shared between Python and C
25 struct passwd {
26 char *pw_name;
27 ...; // literally dot-dot-dot
28 };
29 struct passwd *getpwuid(int uid); // defined in <pwd.h>
30 struct passwd *get_pw_for_root(void); // defined in set_source()
31""")
32
33if __name__ == "__main__":
34 ffibuilder.compile(verbose=True)