On 2015-10-06 14:00, Russ Allbery wrote:
> /*
> * __attribute__ is available in gcc 2.5 and later, but only with gcc 2.7
> * could you use the __format__ form of the attributes, which is what we use
> * (to avoid confusion with other macros).
> */
> #ifndef __attribute__
> # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
> # define __attribute__(spec) /* empty */
> # endif
> #endif
Hi Guys,
Thanks for the information. Russ, I was considering doing this the way
Bison seems to deal with __attribute__ . The generated code looks like:
#ifndef YY_ATTRIBUTE
# if (defined __GNUC__ \
&& (2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__))) \
|| defined __SUNPRO_C && 0x5110 <= __SUNPRO_C
# define YY_ATTRIBUTE(Spec) __attribute__(Spec)
# else
# define YY_ATTRIBUTE(Spec) /* empty */
# endif
#endif
Based on this I was considering something like:
#ifndef __attribute__
# if (defined __GNUC__ \
&& (2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__))) \
|| defined __SUNPRO_C && 0x5110 <= __SUNPRO_C
# define __attribute__(Spec) /* empty */
# endif
#endif
It seems to also handle Sun compilers as well. Anyone have any
objections to the latter solution?
--
Michael Petch
GNU Backgammon Maintainer / Developer
OpenPGP FingerPrint=D81C 6A0D 987E 7DA5 3219 6715 466A 2ACE 5CAE 3304
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