[Python-Dev] Multiple Inclusion of Header Files (original) (raw)

David Abrahams dave@boost-consulting.com
11 Oct 2002 09:54:49 -0400

Guido van Rossum <guido@python.org> writes:

> However, I note that Boost.Python has to #include <patchlevel.h> because > we have to apply workarounds before #including <Python.h> for certain > versions of Python, so I wouldn't say that it's very unrealistic to thi= nk > applications might need these files separately. =20 But this works fine without the protection; probably because patchlevel.h contains no C code, only preprocessor stuff.

Certainly (though PP stuff can cause problems too). I'm just saying that I if you intentionally avoid #include guards on the basis that it's going to help you find your own bugs/inefficiencies, as Fran=E7ois seems to be suggesting, you may be unneccessarily limiting interoperability, which I think is Python's higher goal.

--=20 David Abrahams * Boost Consulting dave@boost-consulting.com * http://www.boost-consulting.com