On Mon, 9 Jun 2003 18:38:38 +0800 Verdi March wrote:

On Saturday 07 June 2003 20:17, Jerry Feldman wrote:

...

Make sure that the prototype for the function you are calling is declared as a C function (as an example):

Ok, so I declare all the C functions as:

#if defined __cplusplus extern "C" { m_host_t MSG_host_create(const char* name, char* trace_file, double cpu, void *data); /* other functions... */ } #endif /* __cplusplus */

Now, g++ complains about conflicting declarations the C libary header file (msg.h). What am I supposed to do now? I have the source to the library, is there anything I need to modify (presummably the header files)?

========== ../include/msg.h:40: error: previous declaration of `s_m_host* MSG_host_create(const char*, char*, double, void*)' with C++ linkage Host.cpp:21: error: conflicts with new declaration with C linkage ../include/msg.h:48: error: previous declaration of `MSG_error_t MSG_host_destroy(s_m_host*)' with C++ linkage Host.cpp:24: error: conflicts with new declaration with C linkage Host.cpp:25: error: parse error before `char' Rather than wrapping your own prototype, wrap the entire include: extern "C" { #include }

Also, while this should not be the problem, do not include names in prototypes: m_host_t MSG_host_create(const char*, char*, double, void *); The extern "C" needs to surround any name that will be used in your code to prevent C++ from mangling it. It's been a few years since I've done extensive mixed language programming. g++ provides the c header files (eg. cstdio) as a way to provide access to the standard C runtime library from C++. -- Jerry Feldman Boston Linux and Unix user group http://www.blu.org PGP key id:C5061EA9 PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9

On Mon, 9 Jun 2003 23:32:57 +0800 Verdi March wrote:

On Monday 09 June 2003 21:00, Jerry Feldman wrote:

...

Rather than wrapping your own prototype, wrap the entire include: extern "C" { #include }

This one works. Thanks alot Jerry. IMHO, those who write C header files should make them compatible with C++. We did this with every C header file on Tru64 Unix.

-- Jerry Feldman Boston Linux and Unix user group http://www.blu.org PGP key id:C5061EA9 PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9

Hi, * DJ [2003-06-10 17:52]:

What Java IDE are developers using on SuSE?

Have a look at Eclipse. Thorsten -- When a thing has been said and said well, have no scruple. Take it and copy it. - Anatole France

Hi

What Java IDE are developers using on SuSE?

We have been looking a JBuilder from Borland.

Well, personally I use NetaBeans. It's a great IDE and it's free. http://www.netbeans.org Ben. _____________________________________________________________________ This e-mail has been scanned for viruses by MCI's Internet Managed Scanning Services - powered by MessageLabs. For further information visit http://www.mci.com