Linux: Move aio_cancel, aio_cancel64 into libc

The symbols were moved using scripts/move-symbol-to-libc.py.

A version placeholder symbol is needed on alpha and sparc because
of the additional symbols formerly at version GLIBC_2.3.

Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>:

1 files changed, 29 insertions, 0 deletions

diff --git a/rt/librt-compat.c b/rt/librt-compat.c
new file mode 100644
index 0000000000..7e5f1db940
--- /dev/null
+++ b/rt/librt-compat.c
@@ -0,0 +1,29 @@
+/* Placeholder definitions to pull in removed symbol versions.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#if PTHREAD_IN_LIBC
+# include <shlib-compat.h>
+# include <sys/cdefs.h>
+
+void
+attribute_compat_text_section
+__attribute_used__
+__librt_version_placeholder_1 (void)
+{
+}
+#endif