macOS Ptypes on OS X

[JayMan8081]

I'm trying to install the ptypes library under OS X 10.4.10. It will compile and install correctly, but when I go to use the library in any application I get the following errors:

/usr/include/ptypes.h:39: error: declaration of C function 'void* pt::pexchange(void**, void*)' conflicts with
/usr/include/ptypes.h:38: error: previous declaration int pt::pexchange(int*, int)' here

My version of gcc/g++ is:
i686-apple-darwin8-gcc-4.0.1

and the ptypes library can be found here:
http://www.melikyan.com/ptypes/index.html

Does anyone have any suggestions? It's a C++ library and when it built it used g++ so I'm not sure why it is giving error message pertaining to C.

 

[Sayer]

C++ supports overloaded functions e.g. multiple versions of the same function with the same name, but different parameters while C doesn't.

Are you building a non-C++/Objective-C++ app?

 

[JayMan8081]

Nope, it's another C++ library that uses ptypes. It's also compiling with g++ which is why I can't understand why this error is occurring. I can't duplicate this on any other Macs here at the office either. Previously this has worked but I did a format and clean re-install and since then I haven't been able to use the ptypes library. Very weird. So far google hasn't helped either! I also verified that there were no extern C { } statements anywhere in my code or the ptypes library code. Any suggestions would be greatly welcomed at this point.

 

[yeroen]

That is weird.

I compiled a small test driver (statically linked against libptype.a however) with the same version of g++ you mentioned and it compiles fine.

Perhaps an #undef __cplusplus directive snuck into your code somewhere? Perhaps in some header file #include'd before ptypes.h?

 

[JayMan8081]

The error I'm getting is before it ever even gets to linking though. It won't even compile a source file that contains #include <ptypes.h>

Hmm I will check on the #undef

 

[JayMan8081]

No luck yet. Didn't find any #undef in any of my code or in any of the ptypes code. Thanks for the suggestions though! I'd rather have something to try than sitting around.

 

[Gelfin]

Is the extension on your source file just .c instead of .cc or .cpp?

 

[JayMan8081]

Is the extension on your source file just .c instead of .cc or .cpp?

Nope the extension is .cpp

 

[yeroen]

What are compiler/linker flags are you using? What gcc/dyld environment variables are set?

Are you getting any compiler errors before it complains about the multiple declarations?

 

[JayMan8081]

Using
g++ -Wno-deprecated -I/usr/local/include -I../include
to compile the source files.

How do I find out what g++ and dyld env variables are set?

Edit: Not getting any other compiler errors before it complains about the multiple declarations.

 

[JayMan8081]

I'm making some progress on this issue. If I leave the header files in /usr/include/ptypes/ and add an -I/usr/include/ptypes/ to my makefile then everything compiles fine. If I don't do that I get the errors as exhibited in my original post. Does anyone have any ideas? I know that before my reinstall I was able to compile projects with ptypes headers that were symlinked in /usr/include/ to their /usr/include/ptypes/ counterparts.