Missing binary operator before token "("

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Here is my code:

C++

#if GDK_VERSION_MAX_ALLOWED < GDK_VERSION_MIN_REQUIRED
#error "GDK_VERSION_MAX_ALLOWED must be >= GDK_VERSION_MIN_REQUIRED"
#endif
#if GDK_VERSION_MIN_REQUIRED < GDK_VERSION_3_0
#error "GDK_VERSION_MIN_REQUIRED must be >= GDK_VERSION_3_0"
#endif

#define GDK_AVAILABLE_IN_ALL                  _GDK_EXTERN

/* XXX: Every new stable minor release should add a set of macros here */

#if GDK_VERSION_MIN_REQUIRED >= GDK_VERSION_3_0
# define GDK_DEPRECATED_IN_3_0                GDK_DEPRECATED
# define GDK_DEPRECATED_IN_3_0_FOR(f)         GDK_DEPRECATED_FOR(f)
#else
# define GDK_DEPRECATED_IN_3_0                _GDK_EXTERN
# define GDK_DEPRECATED_IN_3_0_FOR(f)         _GDK_EXTERN
#endif

#if GDK_VERSION_MAX_ALLOWED < GDK_VERSION_3_0
# define GDK_AVAILABLE_IN_3_0                 GDK_UNAVAILABLE(3, 0)
#else
# define GDK_AVAILABLE_IN_3_0                 _GDK_EXTERN
#endif

Now, note, I do not take credit for this code; it was downloaded from [^]

But, I needed this header for one of my source codes; therefore, I copied it. The error occurs within the line #if GDK_VERSION_MAX_ALLOWED < GDK_VERSION_3_0 and of its similar kinds. Can anyone tell me why this is happening?

What I have tried:

Really, I have tried very little, for I have no idea where even to begin!!! I did not put any brackets in "#if GDK_VERSION_MAX_ALLOWED < GDK_VERSION_3_0" but it is still showing me the error missing binary operator before token "(". Please help!

Posted 17-Dec-17 5:26am

Member 13581003

Updated 17-Dec-17 6:33am

PIEBALDconsult

v2

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PIEBALDconsult 17-Dec-17 12:03pm

Oh, what grotty code.
Look at the definitions of the macros.
Examine the output of the pre-processor.

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Richard MacCutchan · Answer 1 · 2017-12-17T06:09:00

Solution 1

Quote:
I have no idea where even to begin!

Go back to the place where you downloaded this code and ask there. It is a complete waste of time downloading code from the internet if you do not understand what it is or what it does.

Posted 17-Dec-17 6:09am

Richard MacCutchan

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Member 13581003 18-Dec-17 22:38pm

thank you all so much! When I first posted this, I did not expect any replies. So thank you!

OriginalGriff · Answer 2 · 2017-12-17T06:13:00

It's something else in your code: If I copy and paste that lot into a C compiler (or C++) it compiles without problems.
So start by looking at what else you have in there, particularly inside #include files and look for other substitutions. Remember, #DEFINE is a preprocessor operation that effectively does text substitution without any real intelligence. So if you have some other substitutions going on...

Rick York · Answer 3 · 2017-12-17T06:32:00

It seems that you need to find out what the definitions of these are :

GDK_VERSION_MAX_ALLOWED
GDK_VERSION_MIN_REQUIRED

I don't know what compiler you have but with VS17 you can right click on the macro and select go to definition and find out what the values of these and where they are defined. Also, just hovering the mouse over them should show their values.

Missing binary operator before token "("

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