dlfcn: Cleanups after -ldl is no longer required

This commit removes the ELF constructor and internal variables from
dlfcn/dlfcn.c.  The file now serves the same purpose as
nptl/libpthread-compat.c, so it is renamed to dlfcn/libdl-compat.c.
The use of libdl-shared-only-routines ensures that libdl.a is empty.

This commit adjusts the test suite not to use $(libdl).  The libdl.so
symbolic link is no longer installed.

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

1 files changed, 0 insertions, 69 deletions

diff --git a/dlfcn/dlfcn.c b/dlfcn/dlfcn.c
deleted file mode 100644
index ef750bc27a..0000000000
--- a/dlfcn/dlfcn.c
+++ /dev/null
@@ -1,69 +0,0 @@
-/* Load a shared object at run time.
-   Copyright (C) 2005-2021 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/>.  */
-
-#include <dlfcn.h>
-#include <shlib-compat.h>
-
-int __dlfcn_argc attribute_hidden;
-char **__dlfcn_argv attribute_hidden;
-
-
-static void
-init (int argc, char *argv[])
-{
-  __dlfcn_argc = argc;
-  __dlfcn_argv = argv;
-}
-
-static void (*const init_array []) (int argc, char *argv[])
-     __attribute__ ((section (".init_array"), aligned (sizeof (void *))))
-     __attribute_used__ =
-{
-  init
-};
-
-/* The remainder of this file is used to keep specific symbol versions
-   occupied, so that ld does not generate weak symbol version
-   definitions.  */
-
-void
-attribute_compat_text_section
-__attribute_used__
-__libdl_version_placeholder_1 (void)
-{
-}
-
-#if SHLIB_COMPAT (libdl, GLIBC_2_0, GLIBC_2_34)
-compat_symbol (libdl, __libdl_version_placeholder_1,
-               __libdl_version_placeholder, GLIBC_2_0);
-#endif
-
-#if SHLIB_COMPAT (libdl, GLIBC_2_1, GLIBC_2_34)
-compat_symbol (libdl, __libdl_version_placeholder_1,
-               __libdl_version_placeholder, GLIBC_2_1);
-#endif
-
-#if SHLIB_COMPAT (libdl, GLIBC_2_3_3, GLIBC_2_34)
-compat_symbol (libdl, __libdl_version_placeholder_1,
-               __libdl_version_placeholder, GLIBC_2_3_3);
-#endif
-
-#if SHLIB_COMPAT (libdl, GLIBC_2_3_4, GLIBC_2_34)
-compat_symbol (libdl, __libdl_version_placeholder_1,
-               __libdl_version_placeholder, GLIBC_2_3_4);
-#endif