#ifdef _USRDLL

[shamjs]

Hi All,
i want to know what's the meaning of #ifdef _USRDLL
(i think it is related to MFC but not sure)

here is my code
Code:

/*******predictor.cpp*****/
#ifdef _USRDLL
#include "../../corenumeric/inc/statuscommunicator.h"
CStatusCommunicator gPipe;
#endif

.
.//here i have my pgm code

when i execute the pgm compiler is reporting error as
predictor.cpp:26: error: âgPipeâ was not declared in this scope

this error is due to failure of condition of #ifdef _USRDLL

plz guide me how to overcome this error.......

waiting for your reply........

[Rubberman]

Hi All,
i want to know what's the meaning of #ifdef _USRDLL
(i think it is related to MFC but not sure)

here is my code
Code:

/*******predictor.cpp*****/
#ifdef _USRDLL
#include "../../corenumeric/inc/statuscommunicator.h"
CStatusCommunicator gPipe;
#endif

.
.//here i have my pgm code

when i execute the pgm compiler is reporting error as
predictor.cpp:26: error: âgPipeâ was not declared in this scope

this error is due to failure of condition of #ifdef _USRDLL

plz guide me how to overcome this error.......

waiting for your reply........

Yes, this seems to be related to being compiled in an MS environment. I think you need an #else branch in the #ifdef/#endif block that "translates" the MS-specific stuff into ones that will work in Linux. This may not be easy, or even possible without major recoding and/or re-architecting of the code. Writing code that works equally well on MS and Linux/Unix systems requires that the basic code be platform-neutral, which yours is not. I have been doing this for 30 years, so I am familiar with the issues. At the least, you will need to look at the MS statuscommunicator.h file, and determine how to translate its contents into "Linux/Unix" constructs.

Good luck!

P.S. FWIW, it is MUCH easier to go from Linux/Unix compatible code to Windows, vs. the other way around...