nixpkgs/pkgs/development/tools/misc/binutils/fix-bsymbolic.patch

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http://lists.gnu.org/archive/html/bug-binutils/2016-01/msg00193.html
https://sourceware.org/bugzilla/show_bug.cgi?id=19615
From 1dab972d797c060e17229c2e10da01852ba82629 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Thu, 11 Feb 2016 15:31:15 -0800
Subject: [PATCH] Enable -Bsymbolic and -Bsymbolic-functions to PIE
Before binutils 2.26, -Bsymbolic and -Bsymbolic-functions were also
applied to PIE so that "ld -pie -Bsymbolic -E" can be used to export
symbols in PIE with local binding. This patch re-enables -Bsymbolic
and -Bsymbolic-functions for PIE.
diff --git a/ld/lexsup.c b/ld/lexsup.c
index 4cad209..e2fb212 100644
--- a/ld/lexsup.c
+++ b/ld/lexsup.c
@@ -1586,15 +1586,14 @@ parse_args (unsigned argc, char **argv)
/* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data,
--dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and
--dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are
- for shared libraries. -Bsymbolic overrides all others and vice
- versa. */
+ for PIC outputs. -Bsymbolic overrides all others and vice versa. */
switch (command_line.symbolic)
{
case symbolic_unset:
break;
case symbolic:
- /* -Bsymbolic is for shared library only. */
- if (bfd_link_dll (&link_info))
+ /* -Bsymbolic is for PIC output only. */
+ if (bfd_link_pic (&link_info))
{
link_info.symbolic = TRUE;
/* Should we free the unused memory? */
@@ -1603,8 +1602,8 @@ parse_args (unsigned argc, char **argv)
}
break;
case symbolic_functions:
- /* -Bsymbolic-functions is for shared library only. */
- if (bfd_link_dll (&link_info))
+ /* -Bsymbolic-functions is for PIC output only. */
+ if (bfd_link_pic (&link_info))
command_line.dynamic_list = dynamic_list_data;
break;
}