diff options
| -rw-r--r-- | include/features.h | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/include/features.h b/include/features.h index e76bbbab1..f9820791b 100644 --- a/include/features.h +++ b/include/features.h @@ -55,6 +55,7 @@ These are defined by this file and are used by the header files to decide what to declare or define: + __USE_ISOC11 Define ISO C11 things. __USE_ISOC99 Define ISO C99 things. __USE_ISOC95 Define ISO C90 AMD1 (C95) things. __USE_POSIX Define IEEE Std 1003.1 things. @@ -91,6 +92,7 @@ /* Undefine everything, so we get a clean slate. */ +#undef __USE_ISOC11 #undef __USE_ISOC99 #undef __USE_ISOC95 #undef __USE_POSIX @@ -151,6 +153,8 @@ #ifdef _GNU_SOURCE # undef _ISOC99_SOURCE # define _ISOC99_SOURCE 1 +# undef _ISOC11_SOURCE +# define _ISOC11_SOURCE 1 # undef _POSIX_SOURCE # define _POSIX_SOURCE 1 # undef _POSIX_C_SOURCE @@ -223,11 +227,14 @@ # define _SVID_SOURCE 1 #endif -/* This is to enable the ISO C99 extension. Also recognize the old macro - which was used prior to the standard acceptance. This macro will - eventually go away and the features enabled by default once the ISO C99 - standard is widely adopted. */ -#if (defined _ISOC99_SOURCE || defined _ISOC9X_SOURCE \ +/* This is to enable the ISO C11 extension. */ +#if (defined _ISOC11_SOURCE \ + || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112L)) +# define __USE_ISOC11 1 +#endif + +/* This is to enable the ISO C99 extension. */ +#if (defined _ISOC99_SOURCE || defined _ISOC11_SOURCE \ || (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)) # define __USE_ISOC99 1 #endif |