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# mode: run
# tag: cpp
# ticket: 1839
"""
PYTHON setup.py build_ext --inplace
PYTHON -c "from foo import test; test()"
PYTHON -c "from bar import test; test()"
PYTHON -c "from baz import test; test()"
"""
######## setup.py ########
from Cython.Build import cythonize
from Cython.Distutils.extension import Extension
from distutils.core import setup
foo = Extension(
"foo",
["foo.pyx", "foo1.cpp", "foo2.cpp"],
)
bar = Extension(
"bar",
["bar.pyx", "bar1.c", "bar2.cpp"],
)
baz = Extension(
"baz",
["baz.pyx", "baz1.c", "baz2.cpp"],
define_macros = [("__PYX_EXTERN_C", 'extern "C"')],
)
setup(
ext_modules=cythonize([foo, bar, baz]),
)
######## foo.pyx ########
# distutils: language = c++
from libcpp cimport vector
cdef public vector.vector[int] get_vector():
return [1,2,3]
cdef extern from "foo_header.h":
cdef size_t size_vector1()
cdef size_t size_vector2()
def test():
assert size_vector1() == 3
assert size_vector2() == 3
######## foo_header.h ########
size_t size_vector1();
size_t size_vector2();
######## foo1.cpp ########
#include <vector>
#include "foo.h"
size_t size_vector1() {
return get_vector().size();
}
######## foo2.cpp ########
#include <vector>
extern "C" {
// #include within `extern "C"` is legal.
// We want to make sure here that Cython C++ functions are flagged as `extern "C++"`.
// Otherwise they would be interpreted with C-linkage if the header is include within a `extern "C"` block.
#include "foo.h"
}
size_t size_vector2() {
return get_vector().size();
}
######## bar.pyx ########
cdef public char get_char():
return 42
cdef extern from "bar_header.h":
cdef int get_int1()
cdef int get_int2()
def test():
assert get_int1() == 42
assert get_int2() == 42
######## bar_header.h ########
int get_int1();
int get_int2();
######## bar1.c ########
#include "bar.h"
int get_int1() { return (int)get_char(); }
######## bar2.cpp ########
extern "C" {
#include "bar.h"
}
extern "C" int get_int2() { return (int)get_char(); }
######## baz.pyx ########
# distutils: language = c++
cdef public char get_char():
return 42
cdef extern from "baz_header.h":
cdef int get_int1()
cdef int get_int2()
def test():
assert get_int1() == 42
assert get_int2() == 42
######## baz_header.h ########
#ifdef __cplusplus
#define BAZ_EXTERN_C extern "C"
#else
#define BAZ_EXTERN_C
#endif
BAZ_EXTERN_C int get_int1();
int get_int2();
######## baz1.c ########
#undef __PYX_EXTERN_C
#define __PYX_EXTERN_C
#include "baz.h"
int get_int1() { return (int)get_char(); }
######## baz2.cpp ########
#include "baz.h"
int get_int2() { return (int)get_char(); }
|
