Hi, I'm trying to call my own C function from a small RPython program. When I
try to build the program I see this error:
[translation:ERROR] Exception: stand-alone program entry point must return an
int (and not, e.g., None or always raise an exception).
This is the entire RPython program:
from rpython.rtyper.lltypesystem import rffi, lltype
from rpython.translator.tool.cbuild import ExternalCompilationInfo
info = ExternalCompilationInfo(includes=["./myheader.h"],
libraries=["./my_functions.so"])
print_thread_mode = rffi.llexternal("print_thread_mode", [lltype.Void],
lltype.Void, compilation_info=info)
def entry_point(argv):
print_thread_mode()
return 0
def target(*args):
return entry_point
The entry_point function is returning an int (0 here). If I remove the call to
print_thread_mode() the program compiles. The C function is declared in a .c
file. I compiled that file to .so and was able to use it using ctypes in
CPython. This is its prototype: void print_thread_mode(void). It simply prints
some text.
Is there something I am missing?
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