#!/bin/sh -e
## 200-hjl-ld-env.dpatch
##
## DP: Description: Handle LD_SYMBOLIC and LD_SYMBOLIC_FUNCTIONS env vars
## DP: Author: H.J. Lu  <hongjiu.lu@intel.com>
## DP: Upstream status: hjl 2.17.50.0.18
## DP: Original patch: ld-env-6.patch

if [ $# -ne 1 ]; then
    echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
    exit 1
fi

[ -f debian/patches/00patch-opts ] && . debian/patches/00patch-opts
patch_opts="${patch_opts:--f --no-backup-if-mismatch}"

case "$1" in
       -patch) patch $patch_opts -p1 < $0;;
       -unpatch) patch $patch_opts -p1 -R < $0;;
        *)
                echo >&2 "`basename $0`: script expects -patch|-unpatch as argument"
                exit 1;;
esac

exit 0

2007-01-24  H.J. Lu  <hongjiu.lu@intel.com>

	* NEWS: Mention LD_SYMBOLIC and LD_SYMBOLIC_FUNCTIONS.

	* ld.texinfo: Document LD_SYMBOLIC and LD_SYMBOLIC_FUNCTIONS.

	* ldmain.c (main): Handle LD_SYMBOLIC and
	LD_SYMBOLIC_FUNCTIONS.

@DPATCH@
diff -urNad binutils-2.18~cvs20070812~/ld/NEWS binutils-2.18~cvs20070812/ld/NEWS
--- binutils-2.18~cvs20070812~/ld/NEWS	2007-08-12 10:00:32.000000000 +0200
+++ binutils-2.18~cvs20070812/ld/NEWS	2007-08-12 13:09:23.000000000 +0200
@@ -1,6 +1,9 @@
 -*- text -*-
 Changes in 2.18:
 
+* ELF: Support environment variables, LD_SYMBOLIC for -Bsymbolic and
+  LD_SYMBOLIC_FUNCTIONS for -Bsymbolic-functions.
+
 * Linker sources now released under version 3 of the GNU General Public
   License.
 
diff -urNad binutils-2.18~cvs20070812~/ld/ld.texinfo binutils-2.18~cvs20070812/ld/ld.texinfo
--- binutils-2.18~cvs20070812~/ld/ld.texinfo	2007-07-25 16:56:22.000000000 +0200
+++ binutils-2.18~cvs20070812/ld/ld.texinfo	2007-08-12 13:08:46.000000000 +0200
@@ -1142,14 +1142,21 @@
 definition within the shared library, if any.  Normally, it is possible
 for a program linked against a shared library to override the definition
 within the shared library.  This option is only meaningful on ELF
-platforms which support shared libraries.
+platforms which support shared libraries.  If @option{-Bsymbolic} is not
+used when linking a shared library, the linker will also turn on this
+option if the environment variable @code{LD_SYMBOLIC} is set.
 
 @kindex -Bsymbolic-functions
 @item -Bsymbolic-functions
 When creating a shared library, bind references to global function
 symbols to the definition within the shared library, if any.
 This option is only meaningful on ELF platforms which support shared
-libraries.
+libraries.  If @option{-Bsymbolic-functions} is not used when linking a
+shared library, the linker will also turn on this option if the
+environment variable @code{LD_SYMBOLIC_FUNCTIONS} is set.  When
+both environment variables @code{LD_SYMBOLIC} and
+@code{LD_SYMBOLIC_FUNCTIONS} are set, @code{LD_SYMBOLIC} will take
+precedent.
 
 @kindex --dynamic-list=@var{dynamic-list-file}
 @item --dynamic-list=@var{dynamic-list-file}
diff -urNad binutils-2.18~cvs20070812~/ld/ldmain.c binutils-2.18~cvs20070812/ld/ldmain.c
--- binutils-2.18~cvs20070812~/ld/ldmain.c	2007-07-06 16:09:41.000000000 +0200
+++ binutils-2.18~cvs20070812/ld/ldmain.c	2007-08-12 13:08:46.000000000 +0200
@@ -254,6 +254,11 @@
   command_line.warn_search_mismatch = TRUE;
   command_line.check_section_addresses = TRUE;
 
+  if (getenv ("LD_SYMBOLIC") != NULL)
+    command_line.symbolic = symbolic;
+  else if (getenv ("LD_SYMBOLIC_FUNCTIONS") != NULL)
+    command_line.symbolic = symbolic_functions;
+
   /* We initialize DEMANGLING based on the environment variable
      COLLECT_NO_DEMANGLE.  The gcc collect2 program will demangle the
      output of the linker, unless COLLECT_NO_DEMANGLE is set in the