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-rw-r--r--libc-symbols.h20
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. */