diff options
Diffstat (limited to 'include/ouroboros/endian.h')
| -rw-r--r-- | include/ouroboros/endian.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/include/ouroboros/endian.h b/include/ouroboros/endian.h index f29b6749..04c2246a 100644 --- a/include/ouroboros/endian.h +++ b/include/ouroboros/endian.h @@ -23,9 +23,12 @@ #ifndef OUROBOROS_ENDIAN_H #define OUROBOROS_ENDIAN_H + #if defined(__linux__) || defined(__CYGWIN__) || \ (defined(__MACH__) && !defined(__APPLE__)) -#define _DEFAULT_SOURCE +#ifndef _DEFAULT_SOURCE +#error You must define _DEFAULT_SOURCE before including this file +#endif #include <endian.h> #elif defined(__NetBSD__) || defined(__FreeBSD__) || defined(__OpenBSD__) #include <sys/endian.h> |