Preprocessor makro for compile machine

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Hey out there,

i have a question about Preprocessor makros.

is there a way to do something like:

C++

#if COMPUTER_NAME == _T("TestPC") // only on the test computer
   #import "C:\Path\To\3thParty\Library"
#else // on our dev computers
   #import "D:\Dev\Path\To\3thParty\Libraries" 
#endif

that the "C:\" path is only used, when compile on the test computer and in all other cases the "D:\" path is used?

Thank you so much guys for your help!

Posted 21-Aug-14 21:41pm

C3D1

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OriginalGriff · Answer 1 · 2014-08-21T22:07:00

Solution 1

Yes: the simplest way is to use

C++

#IF DEBUG

as you (should) always compile with debug off for production releases.

Posted 21-Aug-14 22:07pm

OriginalGriff

Comments

C3D1 22-Aug-14 4:11am

#ifded _DEBUG doesen't work in this case, because the test computer sould do debug too.
And the computer who compile the release version have the same paths and harddrives like our dev computers. Only the test computer have different paths

_Asif_ · Answer 2 · 2014-08-21T22:28:00

I have looked over this issue. You need to do following to get what you want.

* On Your test machine open VS
* Goto: Project->Properties->Configuration Properties->C/C++->PreProcessor
* Add _TEST_MACHINE at the end in Preprocessor Definition
* Change your macro like this

C++

#if _TEST_MACHINE 
   #import "C:\Path\To\3thParty\Library"
#else 
   #import "D:\Dev\Path\To\3thParty\Libraries" 
#endif

Please do remember not to add _TEST_MACHINE on your devlopment machine's VS

Richard MacCutchan · Answer 3 · 2014-08-22T00:32:00

Solution 3

No you cannot use strings in preprocessor directives in that way; see http://msdn.microsoft.com/en-us/library/ew2hz0yd.aspx[^].

Posted 22-Aug-14 0:32am

Richard MacCutchan

Comments

C3D1 22-Aug-14 7:15am

yes, i know that i cannot use strings in preprocessor directives in the way i asked.
I wrote "something like". I know the code above will not work.
Therfore i ask, if there is a way to do something like that

Richard MacCutchan 22-Aug-14 7:30am

Yes but only by defining a preprocessor constant that tells the compiler which path to take. A much simpler option is to use the search order rules as described in the documentation.