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c674x compilation: round macro redefinition

TIDR
Genius 9315 points

My customer is compiling some code and came across a warnign that said:

"ti/dm814x/cgt6x_7_3_5/include/gsm.h", line 90: warning #48-D: incompatible redefinition of macro "round" (ti/dm814x/cgt6x_7_3_5/include/math.h")

 

I notice in the c55x compiler user guide there is a Note about this:

Definitions of Function round

NOTE:

Both the header files math.h and gsm.h contain definitions for the function round. (The

former introduces the round function defined by the C99 standard.) Thus, a conflict will occur

if both of these header files are included in the same file. Including the two files in the same

source file results in a warning of an incompatible redefinition of the macro round.

The diagnostic is only a warning and the last encountered definition of round will be used.

The warning may be turned into an error using the -pdse48 option or "#pragma

DIAG_ERROR 48".

SPRU281G

–

However, I don't see anything similar in teh C6000 C compiler guide. Is this considered a user error where they include gsm.h and math.h together? Coudl there be a reason they would need to include both and if so how can this be avoided?

 

I'm waiting to get hte test case from the customer but I figured I'd check this in the meantime.

 

Rgds

-Dipa-

 

  • 0
    TI__Guru**** 244280 points

    It is very likely that C5500 compiler documentation applies to the C6000 compiler as well.  I'll check to be sure.

    Thanks and regards,

    -George

  • 0 in reply to George Mock
    TI__Guru**** 244280 points

    The header file gsm.h arises from the ETSI standard, and math.h arises from the ANSI C C99 standard.  Both of those standards define a round macro.  Thus, you have to contend with this issue if you include both of those files.  Strategies include using diagnostic options to suppress that warning.  If your code never uses the round macro, you could do this ...

    #include <gsm.h>
    #undef round
    #include <math.h>
    #undef round

    There are probably other similar sorts of things you could do.

    Thanks and regards,

    -George