Re: Mixing obective-C and c++
Re: Mixing obective-C and c++
- Subject: Re: Mixing obective-C and c++
- From: Scott Andrew <email@hidden>
- Date: Mon, 9 Apr 2007 09:00:07 -0700
The compiler sees a .m file as an Objective-C file and can't call C++
routines from it and won't handle the manging properly. If it is a
true C function (not a C++ function) wrap it with extern "C". If it
is a true c++ function (returning a C++ class or is a cal into a C++
class) the rename your .m file to .mm which is for Objective C++.
On Apr 7, 2007, at 9:03 AM, Livio Isaia wrote:
Firstly, many thanks to everybody for helping.
So here is a new problem.
I have a ".c++" file with a procedure called from a ".m" file
(Cocoa). But XCode tells me "undefined symbol" when linking (I
turned off ZeroLink).
Let's say I have
theCFile.h declaring theCProcedure,
theCFile.c++ containing theCProcedure
and theCocoaFile.m calling theCProcedure.
All files are in the same project; when building everything seems
ok; I set "#include "theCFile.h"" in theCocoaFile.m; the target of
theCFile.c++ is the target application...
I shouldn't be surprised if it couldn't link with some libraries
called from theCFile.c++, but linking with theCFile.o?
Can you help some way?
Many thanks again,
regards, livio.
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