diff options
Diffstat (limited to 'libc-symbols.h')
| -rw-r--r-- | libc-symbols.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/libc-symbols.h b/libc-symbols.h index f4d82a6e72..951ea61ec2 100644 --- a/libc-symbols.h +++ b/libc-symbols.h @@ -134,6 +134,26 @@ Cambridge, MA 02139, USA. */ #endif +#if (!defined (ASSEMBLER) && \ + (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7))) +/* GCC 2.7 and later has special syntax for weak symbols and aliases. + Using that is better when possible, because the compiler and assembler + are better clued in to what we are doing. */ +#undef strong_alias +#define strong_alias(name, aliasname) \ + __typeof (name) aliasname __attribute__ ((alias (#name))); + +#ifdef HAVE_WEAK_SYMBOLS +#undef weak_symbol +#define weak_symbol(name) \ + __typeof (name) name __attribute__ ((weak)); +#undef weak_alias +#define weak_alias(name, aliasname) \ + __typeof (name) aliasname __attribute__ ((weak, alias (#name))); +#endif /* HAVE_WEAK_SYMBOLS. */ +#endif /* Not ASSEMBLER, and GCC 2.7 or later. */ + + /* When the file using this macro is linked in, the linker will emit a warning message MSG. */ |