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authorRoland McGrath <roland@gnu.org>1995-07-26 07:10:58 +0000
committerRoland McGrath <roland@gnu.org>1995-07-26 07:10:58 +0000
commit958f803fc021993cc2ee1d4157d0092b830368aa (patch)
tree0e5939ccad4bb5a551b81f344843613455c12bb8 /libc-symbols.h
parent9f2233e81a0eb06e7278584654cfbdd313d8c228 (diff)
Wed Jul 26 02:00:29 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu>cvs/bind-493b24
* malloc/memalign.c: Allocate (SIZE + ALIGNMENT - 1) and then trim if possible. * mach/shortcut.awk: Emit decls for RPC. * libc-symbols.h [GCC >= 2.7 && !ASSEMBLER] (weak_symbol, weak_alias, strong_alias): Define using GCC __attribute__ syntax. * Makerules ($(installed-libcs)): Depend on `lib' (only).
Diffstat (limited to 'libc-symbols.h')
-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. */