[Python-bugs-list] [Bug #113106] distutils' msvccompiler.py has small C++ defects

[noreply@sourceforge.net]

Bug #113106, was updated on 2000-Aug-30 04:57
Here is a current snapshot of the bug.

Project: Python
Category: Distutils
Status: Open
Resolution: None
Bug Group: Platform-specific
Priority: 5
Summary: distutils' msvccompiler.py has small C++ defects

Details: At least in 1.6b1, the msvccompiler.py module of distutils
has a couple of lacks in C++ support, that show up strongly at least when building the "CXX" extension (I also submitted those to the CXX group, but there's little they can do about them, I think).

a) .cxx is not a recognized extension -- it should be listed together with .cc and .cpp, as it's quite common (and it's the one used by the CXX group, as it happens).
Falling-off-a-log-easy to fix.

b) the /GX switch is not given when building C++ sources, which causes (at the very least) warnings from the standard C++ library headers, erroneous handling of exceptions, etc.
Pretty easy to fix as each sourcefile is being separately identified as C++ or C source, just no use is being made of this yet to select the compilation options (I think /gx should be mandatory for C++ sources to give behavior closer to C++ standard, make C++ standard library usable, etc; /gr
for RTTI is a harder decision as it imposes some overhead).


Alex


Follow-Ups:

Date: 2000-Aug-30 10:34
By: gward

Comment:
OK, the .cxx extension was easy to add -- done and checked in.

I'm not sure how to deal with /GX, though: is it OK to include this option when compiling C code?  If so, it's a snap: just add it to the 'compile_options' attribute.  If not, it's a wee bit trickier.  Can you try compiling a C extension with /GX and see what happens?

Here's what Microsoft's online docs say:

"""
/GX   (Enable Exception Handling)

This option enables synchronous exception handling with the assumption that extern C functions never throw an exception. It is now equivalent to /EHsc.

For more information, see Exception Handling Topics (C++).
"""

That's at: http://msdn.microsoft.com/library/devprods/vs6/visualc/vccore/_core_.2f.gx.htm

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http://sourceforge.net/bugs/?func=detailbug&bug_id=113106&group_id=5470