Functions - C and C++ compatibility

[alanmusician]

I have a function that I've written in C++ that I need to make available in a project that will only compile with the /TC option (crappy casting). What is the easiest way to solve this problem?

 

[xwb]

Just declare it as extern "C". This means that the prototype is in C. The implementation can be whatever you like.

 

[alanmusician]

Okey, everything works peachy when I plug it into another test project I built that uses the /TC switch, but I get this error with the real project:

LNK4098: defaultlib 'LIBCMT' conflicts with use of other libs; use /NODEFAULTLIB:library

Any ideas?

 

[xwb]

LIBCMT is the multi-threaded C library. Make sure you build all libraries with the same setting. The following settings should be the same

1) release/debug (D suffix)
2) single/multi threaded (MT suffix)

i.e.

libc - release single threaded
libcd - debug single threaded
libcmt - release multi threaded
libcmtd - debug multi threaded

 

[alanmusician]

They're all using LIBCMT. When I add my C++ module to the project I get these errors. All it #includes is windows.h and fstream.