diff options
Diffstat (limited to 'misc/sys/cdefs.h')
| -rw-r--r-- | misc/sys/cdefs.h | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h index 36510effe1..5880fe9c5e 100644 --- a/misc/sys/cdefs.h +++ b/misc/sys/cdefs.h @@ -21,7 +21,14 @@ /* We are almost always included from features.h. */ #ifndef _FEATURES_H -#include <features.h> +# include <features.h> +#endif + +/* The GNU libc does not support any K&R compilers or the traditional mode + of ISO C compilers anymore. Check for some of the combinations not + anymore supported. */ +#if defined __GNUC__ && !defined __STDC__ +# error "You need a ISO C conforming compiler to use the glibc headers" #endif /* Some user header file might have defined this before. */ |