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Pinned topic Little question about : 1506-205 (S) #error "Obsolete header file

‏2011-03-03T12:41:58Z |

I am having issues using XL C to compile a c++ project.

Using AIX 5.3, we were using the -D_AIX and -D_AIX50 to compile the project.
We changed AIX version for AIX 6.1.

To update options and looking at the XL C 10.1 documentation, I did not found any information about the -D_AIX50 option (information which was in the XLC 7.0 documentation).

Then, I tried to use -D_AIX61 but compiler return the following warning :

"/usr/vacpp/include/ansic_aix.h", line 19.4: 1506-205 (S) #error "Obsolete header file, please stop using it, or define OLD_ANSIC_AIX_VERSION macro to invoke it"

My question is simple :

Does this fonction still exist ?
What this option is used for ?

Does it provides any specifics optimizations or is it used only for personnal optimization like
if _AIX50 == 1 then
do something
do something else ?

Following the advice in the warning I should only use -DOLD_ANSIC_AIX_VERSION whereas -D_AIX and -D_AIX50 option ?

Thank you very much for your answer !

Updated on 2011-03-07T15:59:46Z at 2011-03-07T15:59:46Z by Visda
  • Visda
    37 Posts

    Re: Little question about : 1506-205 (S) #error "Obsolete header file

    Hello, Matthieu,

    In reply to one of your questions: does this function still exists?
    You can use -qshowmacros to get a list of the macros used by the compiler. An example of how to use and the expected output is given in: How do you determine the compiler's predefined macros? here on this forum.