Upgrade binutils

Bump 2.28 -> 2.28.1; add 2.29.

Signed-off-by: Alexey Neyman <stilor@att.net>

packages/binutils/2.28/700-Fix-library-paths-on-PowerPC.patch

@@ -1,42 +0,0 @@
-From 1b967f3cb0682dd05128ef13495c2dca2a04dc4e Mon Sep 17 00:00:00 2001
-From: Alexey Neyman <stilor@att.net>
-Date: Sat, 11 Mar 2017 17:27:09 -0800
-Subject: [PATCH] Fix library paths on PowerPC
-
-First, need to match against just the CPU name, not the whole triplet.
-Otherwise, the test picks up "*le-*" pattern from x86_64-apple-darwin
-triplet.
-
-Second, it should be testing for $target, not $host. Host may be
-little endian by default, and the sysroot directory layout shouldn't
-depend on whether it is built on LE or BE machine.
-
-Signed-off-by: Alexey Neyman <stilor@att.net>
----
- ld/emulparams/elf32ppccommon.sh | 10 +++++-----
- 1 file changed, 5 insertions(+), 5 deletions(-)
-
-diff --git a/ld/emulparams/elf32ppccommon.sh b/ld/emulparams/elf32ppccommon.sh
-index 1f54ef8..d00cf68 100644
---- a/ld/emulparams/elf32ppccommon.sh
-+++ b/ld/emulparams/elf32ppccommon.sh
-@@ -44,11 +44,11 @@ fi
- 
- # Look for 64 bit target libraries in /lib64, /usr/lib64 etc., first.
- # Similarly, look for 32 bit libraries in /lib32, /usr/lib32 etc.
--case "$host":"$EMULATION_NAME" in
--  *le-*:*64lppc*) LIBPATH_SUFFIX=64 ;;
--  *le-*:*32lppc*) LIBPATH_SUFFIX=32 ;;
--  *le-*:*64*) LIBPATH_SUFFIX=64be ;;
--  *le-*:*32*) LIBPATH_SUFFIX=32be ;;
-+case `echo "$target" | sed -e 's/-.*//'`:"$EMULATION_NAME" in
-+  *le:*64lppc*) LIBPATH_SUFFIX=64 ;;
-+  *le:*32lppc*) LIBPATH_SUFFIX=32 ;;
-+  *le:*64*) LIBPATH_SUFFIX=64be ;;
-+  *le:*32*) LIBPATH_SUFFIX=32be ;;
-   *:*64lppc*) LIBPATH_SUFFIX=64le ;;
-   *:*32lppc*) LIBPATH_SUFFIX=32le ;;
-   *:*64*) LIBPATH_SUFFIX=64 ;;
--- 
-2.9.3
-

packages/binutils/2.29/120-sh-conf.patch

@@ -0,0 +1,33 @@
+r10231 | lethal | 2005-05-02 09:58:00 -0400 (Mon, 02 May 2005) | 13 lines
+
+Likewise, binutils has no idea about any of these new targets either, so we 
+fix that up too.. now we're able to actually build a real toolchain for 
+sh2a_nofpu- and other more ineptly named toolchains (and yes, there are more 
+inept targets than that one, really. Go look, I promise).
+
+diff --git a/configure b/configure
+index 87677bc..2d916f1 100755
+--- a/configure
++++ b/configure
+@@ -3812,7 +3812,7 @@ case "${target}" in
+   or1k*-*-*)
+     noconfigdirs="$noconfigdirs gdb"
+     ;;
+-  sh-*-*)
++  sh*-*-*)
+     case "${target}" in
+       sh*-*-elf)
+          ;;
+diff --git a/configure.ac b/configure.ac
+index 8fe0eca..b10a99f 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -1140,7 +1140,7 @@ case "${target}" in
+   or1k*-*-*)
+     noconfigdirs="$noconfigdirs gdb"
+     ;;
+-  sh-*-*)
++  sh*-*-*)
+     case "${target}" in
+       sh*-*-elf)
+          ;;

packages/binutils/2.29/300-001_ld_makefile_patch.patch

@@ -0,0 +1,26 @@
+diff --git a/ld/Makefile.am b/ld/Makefile.am
+index 9575f1f..84df0bf 100644
+--- a/ld/Makefile.am
++++ b/ld/Makefile.am
+@@ -54,7 +54,7 @@ endif
+ # We put the scripts in the directory $(scriptdir)/ldscripts.
+ # We can't put the scripts in $(datadir) because the SEARCH_DIR
+ # directives need to be different for native and cross linkers.
+-scriptdir = $(tooldir)/lib
++scriptdir = $(libdir)
+ 
+ EMUL = @EMUL@
+ EMULATION_OFILES = @EMULATION_OFILES@
+diff --git a/ld/Makefile.in b/ld/Makefile.in
+index 9f56ca1..272860f 100644
+--- a/ld/Makefile.in
++++ b/ld/Makefile.in
+@@ -388,7 +388,7 @@ AM_CFLAGS = $(WARN_CFLAGS)
+ # We put the scripts in the directory $(scriptdir)/ldscripts.
+ # We can't put the scripts in $(datadir) because the SEARCH_DIR
+ # directives need to be different for native and cross linkers.
+-scriptdir = $(tooldir)/lib
++scriptdir = $(libdir)
+ BASEDIR = $(srcdir)/..
+ BFDDIR = $(BASEDIR)/bfd
+ INCDIR = $(BASEDIR)/include

packages/binutils/2.29/300-012_check_ldrunpath_length.patch

@@ -0,0 +1,22 @@
+diff --git a/ld/emultempl/elf32.em b/ld/emultempl/elf32.em
+index 137446f..bb8391a 100644
+--- a/ld/emultempl/elf32.em
++++ b/ld/emultempl/elf32.em
+@@ -1195,6 +1195,8 @@ fragment <<EOF
+ 	      && command_line.rpath == NULL)
+ 	    {
+ 	      path = (const char *) getenv ("LD_RUN_PATH");
++	      if ((path) && (strlen (path) == 0))
++	      	path = NULL;
+ 	      if (path
+ 		  && gld${EMULATION_NAME}_search_needed (path, &n, force))
+ 		break;
+@@ -1458,6 +1460,8 @@ gld${EMULATION_NAME}_before_allocation (void)
+   rpath = command_line.rpath;
+   if (rpath == NULL)
+     rpath = (const char *) getenv ("LD_RUN_PATH");
++  if ((rpath) && (*rpath == '\0'))
++  	rpath = NULL;
+ 
+   for (abfd = link_info.input_bfds; abfd; abfd = abfd->link.next)
+     if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)

packages/binutils/2.29/320-MinGW-w64-winpthreads-doesnt-have-pthread_mutexattr_settype.patch

@@ -0,0 +1,11 @@
+--- binutils-2.27/gold/gold-threads.cc.orig	2016-12-26 16:44:23.691075600 +1100
++++ binutils-2.27/gold/gold-threads.cc	2016-12-26 16:46:21.071855200 +1100
+@@ -101,7 +101,7 @@
+   int err = pthread_mutexattr_init(&attr);
+   if (err != 0)
+     gold_fatal(_("pthead_mutexattr_init failed: %s"), strerror(err));
+-#ifdef PTHREAD_MUTEX_ADAPTIVE_NP
++#if defined(PTHREAD_MUTEX_ADAPTIVE_NP) && !defined(_WIN32)
+   err = pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ADAPTIVE_NP);
+   if (err != 0)
+     gold_fatal(_("pthread_mutexattr_settype failed: %s"), strerror(err));

packages/binutils/2.29/330-Dont-link-to-libfl-as-its-unnecessary.patch

@@ -0,0 +1,108 @@
+diff --git a/binutils/configure b/binutils/configure
+index 6e1f21e..78bf4ae 100755
+--- a/binutils/configure
++++ b/binutils/configure
+@@ -12106,6 +12106,7 @@
+ done
+ test -n "$YACC" || YACC="yacc"
+ 
++save_LIBS=$LIBS
+ for ac_prog in flex lex
+ do
+   # Extract the first word of "$ac_prog", so it can be a program name with args.
+@@ -12267,6 +12268,8 @@
+ if test "$LEX" = :; then
+   LEX=${am_missing_run}flex
+ fi
++LIBS=$save_LIBS
++LEXLIB=
+ 
+ ALL_LINGUAS="bg da es fi fr id it ja ro ru rw sk sv tr uk vi zh_CN zh_TW hr ca"
+ # If we haven't got the data from the intl directory,
+diff --git a/binutils/configure.ac b/binutils/configure.ac
+index defe781..8fd236a 100644
+--- a/binutils/configure.ac
++++ b/binutils/configure.ac
+@@ -87,7 +87,10 @@
+ fi
+ 
+ AC_PROG_YACC
++save_LIBS=$LIBS
+ AM_PROG_LEX
++LIBS=$save_LIBS
++LEXLIB=
+ 
+ ALL_LINGUAS="bg da es fi fr id it ja ro ru rw sk sv tr uk vi zh_CN zh_TW hr ca"
+ ZW_GNU_GETTEXT_SISTER_DIR
+diff --git a/gas/configure b/gas/configure
+index f959e95..9bb4043 100755
+--- a/gas/configure
++++ b/gas/configure
+@@ -12819,6 +12819,7 @@ fi
+ done
+ test -n "$YACC" || YACC="yacc"
+ 
++save_LIBS=$LIBS
+ for ac_prog in flex lex
+ do
+   # Extract the first word of "$ac_prog", so it can be a program name with args.
+@@ -12980,6 +12981,8 @@ esac
+ if test "$LEX" = :; then
+   LEX=${am_missing_run}flex
+ fi
++LIBS=$save_LIBS
++LEXLIB=
+ 
+ ALL_LINGUAS="fr tr es rw id ru fi ja zh_CN sv"
+ # If we haven't got the data from the intl directory,
+diff --git a/gas/configure.ac b/gas/configure.ac
+index 07f825d..c552b7e 100644
+--- a/gas/configure.ac
++++ b/gas/configure.ac
+@@ -734,7 +734,10 @@ AC_DEFINE_UNQUOTED(TARGET_VENDOR,	"${target_vendor}", [Target vendor.])
+ AC_DEFINE_UNQUOTED(TARGET_OS,		"${target_os}",    [Target OS.])
+ 
+ AC_PROG_YACC
++save_LIBS=$LIBS
+ AM_PROG_LEX
++LIBS=$save_LIBS
++LEXLIB=
+ 
+ ALL_LINGUAS="fr tr es rw id ru fi ja zh_CN sv"
+ ZW_GNU_GETTEXT_SISTER_DIR
+diff --git a/ld/configure b/ld/configure
+index a446283..1a6bf81 100755
+--- a/ld/configure
++++ b/ld/configure
+@@ -16087,6 +16087,7 @@ fi
+ done
+ test -n "$YACC" || YACC="yacc"
+ 
++save_LIBS=$LIBS
+ for ac_prog in flex lex
+ do
+   # Extract the first word of "$ac_prog", so it can be a program name with args.
+@@ -16248,6 +16249,8 @@ esac
+ if test "$LEX" = :; then
+   LEX=${am_missing_run}flex
+ fi
++LIBS=$save_LIBS
++LEXLIB=
+ 
+ 
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to enable maintainer-specific portions of Makefiles" >&5
+diff --git a/ld/configure.ac b/ld/configure.ac
+index 188172d..45eec53 100644
+--- a/ld/configure.ac
++++ b/ld/configure.ac
+@@ -186,7 +186,10 @@ AM_PO_SUBDIRS
+ AC_EXEEXT
+ 
+ AC_PROG_YACC
++save_LIBS=$LIBS
+ AM_PROG_LEX
++LIBS=$save_LIBS
++LEXLIB=
+ 
+ AM_MAINTAINER_MODE
+ AM_CONDITIONAL(GENINSRC_NEVER, false)

packages/binutils/2.29/340-Darwin-gold-binary-cc-include-string-not-cstring.patch

@@ -0,0 +1,13 @@
+diff --git a/gold/binary.cc b/gold/binary.cc
+index 52df81a..03a8f20 100644
+--- a/gold/binary.cc
++++ b/gold/binary.cc
+@@ -23,7 +23,7 @@
+ #include "gold.h"
+ 
+ #include <cerrno>
+-#include <cstring>
++#include <string>
+ 
+ #include "elfcpp.h"
+ #include "stringpool.h"

packages/binutils/2.29/350-Darwin-Two-fixes-from-Android-NDK-PTHREAD_ONCE_INIT-wcsncasecmp.patch

@@ -0,0 +1,77 @@
+From c39479f4ab4d372b518957871e1f205a03e7c3d6 Mon Sep 17 00:00:00 2001
+From: Andrew Hsieh <andrewhsieh@google.com>
+Date: Wed, 18 Mar 2015 10:57:24 +0800
+Subject: [PATCH] Fix darwin build
+
+1. In Drawin PTHREAD_ONCE_INIT is {0x30B1BCBA, {0}} and the GCC < 4.4
+   doesn't support ended initializer list
+2. wcsncasecmp doesn't exist in MacSDK10.6.x
+
+Change-Id: I69204a72f853f5263dffedc448379d75ed4eca2e
+---
+ binutils-2.25/bfd/peXXigen.c       | 22 ++++++++++++++++++++++
+ binutils-2.25/gold/gold-threads.cc | 15 ++++++++++++---
+ 2 files changed, 34 insertions(+), 3 deletions(-)
+
+diff --git binutils-2.25.orig/bfd/peXXigen.c binutils-2.25/bfd/peXXigen.c
+index 13e39e4..7a98306 100644
+--- binutils-2.25.orig/bfd/peXXigen.c
++++ binutils-2.25/bfd/peXXigen.c
+@@ -3522,6 +3522,28 @@ u16_mbtouc (wchar_t * puc, const unsigned short * s, unsigned int n)
+ }
+ #endif /* HAVE_WCHAR_H and not Cygwin/Mingw */
+ 
++#if defined __APPLE__ && __DARWIN_C_LEVEL < 200809L
++/* wcsncasecmp isn't always defined in Mac SDK */
++static int
++wcsncasecmp(const wchar_t *s1, const wchar_t *s2, size_t n)
++{
++  wchar_t c1, c2;
++
++  if (n == 0)
++    return (0);
++  for (; *s1; s1++, s2++)
++  {
++    c1 = towlower(*s1);
++    c2 = towlower(*s2);
++    if (c1 != c2)
++      return ((int)c1 - c2);
++    if (--n == 0)
++      return (0);
++  }
++  return (-*s2);
++}
++#endif
++
+ /* Perform a comparison of two entries.  */
+ static signed int
+ rsrc_cmp (bfd_boolean is_name, rsrc_entry * a, rsrc_entry * b)
+diff --git binutils-2.25.orig/gold/gold-threads.cc binutils-2.25/gold/gold-threads.cc
+index ff5a8ac..45140e0 100644
+--- binutils-2.25.orig/gold/gold-threads.cc
++++ binutils-2.25/gold/gold-threads.cc
+@@ -284,9 +284,18 @@ Condvar::~Condvar()
+ class Once_initialize
+ {
+  public:
+-  Once_initialize()
+-    : once_(PTHREAD_ONCE_INIT)
+-  { }
++   Once_initialize()
++#if !defined(__APPLE__)
++     : once_(PTHREAD_ONCE_INIT)
++   { }
++#else
++// In Drawin PTHREAD_ONCE_INIT is {0x30B1BCBA, {0}} and the GCC < 4.4 doesn't support
++// extended initializer list as above */
++   {
++     pthread_once_t once_2 = PTHREAD_ONCE_INIT;
++     once_ = once_2; 
++   }
++#endif
+ 
+   // Return a pointer to the pthread_once_t variable.
+   pthread_once_t*
+-- 
+2.1.3
+

packages/binutils/2.29/500-sysroot.patch

@@ -0,0 +1,37 @@
+Signed-off-by: Sven Rebhan <odinshorse@googlemail.com>
+
+Always try to prepend the sysroot prefix to absolute filenames first.
+
+http://bugs.gentoo.org/275666
+http://sourceware.org/bugzilla/show_bug.cgi?id=10340
+
+--- a/ld/ldfile.c
++++ b/ld/ldfile.c
+@@ -336,18 +336,25 @@
+      directory first.  */
+   if (!entry->flags.maybe_archive)
+     {
+-      if (entry->flags.sysrooted && IS_ABSOLUTE_PATH (entry->filename))
++      /* For absolute pathnames, try to always open the file in the
++	 sysroot first. If this fails, try to open the file at the
++	 given location.  */
++      entry->flags.sysrooted = is_sysrooted_pathname (entry->filename);
++      if (!entry->flags.sysrooted && IS_ABSOLUTE_PATH (entry->filename)
++	  && ld_sysroot)
+ 	{
+ 	  char *name = concat (ld_sysroot, entry->filename,
+ 			       (const char *) NULL);
+ 	  if (ldfile_try_open_bfd (name, entry))
+ 	    {
+ 	      entry->filename = name;
++	      entry->flags.sysrooted = TRUE;
+ 	      return TRUE;
+ 	    }
+ 	  free (name);
+ 	}
+-      else if (ldfile_try_open_bfd (entry->filename, entry))
++
++      if (ldfile_try_open_bfd (entry->filename, entry))
+ 	return TRUE;
+ 
+       if (IS_ABSOLUTE_PATH (entry->filename))

packages/binutils/2.29/600-poison-system-directories.patch

@@ -0,0 +1,285 @@
+Patch adapted to binutils 2.23.2 and extended to use
+BR_COMPILER_PARANOID_UNSAFE_PATH by Thomas Petazzoni.
+
+[Gustavo: adapt to binutils 2.25]
+Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
+Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
+
+Upstream-Status: Inappropriate [distribution: codesourcery]
+
+Patch originally created by Mark Hatle, forward-ported to
+binutils 2.21 by Scott Garman.
+
+purpose:  warn for uses of system directories when cross linking
+
+Code Merged from Sourcery G++ binutils 2.19 - 4.4-277
+
+2008-07-02  Joseph Myers  <joseph@codesourcery.com>
+
+    ld/
+    * ld.h (args_type): Add error_poison_system_directories.
+    * ld.texinfo (--error-poison-system-directories): Document.
+    * ldfile.c (ldfile_add_library_path): Check
+    command_line.error_poison_system_directories.
+    * ldmain.c (main): Initialize
+    command_line.error_poison_system_directories.
+    * lexsup.c (enum option_values): Add
+    OPTION_ERROR_POISON_SYSTEM_DIRECTORIES.
+    (ld_options): Add --error-poison-system-directories.
+    (parse_args): Handle new option.
+
+2007-06-13  Joseph Myers  <joseph@codesourcery.com>
+
+    ld/
+    * config.in: Regenerate.
+    * ld.h (args_type): Add poison_system_directories.
+    * ld.texinfo (--no-poison-system-directories): Document.
+    * ldfile.c (ldfile_add_library_path): Check
+    command_line.poison_system_directories.
+    * ldmain.c (main): Initialize
+    command_line.poison_system_directories.
+    * lexsup.c (enum option_values): Add
+    OPTION_NO_POISON_SYSTEM_DIRECTORIES.
+    (ld_options): Add --no-poison-system-directories.
+    (parse_args): Handle new option.
+
+2007-04-20  Joseph Myers  <joseph@codesourcery.com>
+
+    Merge from Sourcery G++ binutils 2.17:
+
+    2007-03-20  Joseph Myers  <joseph@codesourcery.com>
+    Based on patch by Mark Hatle <mark.hatle@windriver.com>.
+    ld/
+    * configure.ac (--enable-poison-system-directories): New option.
+    * configure, config.in: Regenerate.
+    * ldfile.c (ldfile_add_library_path): If
+    ENABLE_POISON_SYSTEM_DIRECTORIES defined, warn for use of /lib,
+    /usr/lib, /usr/local/lib or /usr/X11R6/lib.
+
+Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
+Signed-off-by: Scott Garman <scott.a.garman@intel.com>
+
+diff --git a/ld/config.in b/ld/config.in
+index 276fb77..35c58eb 100644
+--- a/ld/config.in
++++ b/ld/config.in
+@@ -17,6 +17,9 @@
+    language is requested. */
+ #undef ENABLE_NLS
+ 
++/* Define to warn for use of native system library directories */
++#undef ENABLE_POISON_SYSTEM_DIRECTORIES
++
+ /* Additional extension a shared object might have. */
+ #undef EXTRA_SHLIB_EXTENSION
+ 
+diff --git a/ld/configure b/ld/configure
+index a446283..d1f9504 100755
+--- a/ld/configure
++++ b/ld/configure
+@@ -788,6 +788,7 @@ with_lib_path
+ enable_targets
+ enable_64_bit_bfd
+ with_sysroot
++enable_poison_system_directories
+ enable_gold
+ enable_got
+ enable_compressed_debug_sections
+@@ -1445,6 +1446,8 @@ Optional Features:
+   --disable-largefile     omit support for large files
+   --enable-targets        alternative target configurations
+   --enable-64-bit-bfd     64-bit support (on hosts with narrower word sizes)
++  --enable-poison-system-directories
++                          warn for use of native system library directories
+   --enable-gold[=ARG]     build gold [ARG={default,yes,no}]
+   --enable-got=<type>     GOT handling scheme (target, single, negative,
+                           multigot)
+@@ -15498,7 +15501,18 @@ else
+ fi
+ 
+ 
++# Check whether --enable-poison-system-directories was given.
++if test "${enable_poison_system_directories+set}" = set; then :
++  enableval=$enable_poison_system_directories;
++else
++  enable_poison_system_directories=no
++fi
++
++if test "x${enable_poison_system_directories}" = "xyes"; then
+ 
++$as_echo "#define ENABLE_POISON_SYSTEM_DIRECTORIES 1" >>confdefs.h
++
++fi
+ 
+ # Check whether --enable-got was given.
+ if test "${enable_got+set}" = set; then :
+diff --git a/ld/configure.ac b/ld/configure.ac
+index 188172d..2cd8443 100644
+--- a/ld/configure.ac
++++ b/ld/configure.ac
+@@ -95,6 +95,16 @@ AC_SUBST(use_sysroot)
+ AC_SUBST(TARGET_SYSTEM_ROOT)
+ AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
+ 
++AC_ARG_ENABLE([poison-system-directories],
++         AS_HELP_STRING([--enable-poison-system-directories],
++                [warn for use of native system library directories]),,
++         [enable_poison_system_directories=no])
++if test "x${enable_poison_system_directories}" = "xyes"; then
++  AC_DEFINE([ENABLE_POISON_SYSTEM_DIRECTORIES],
++       [1],
++       [Define to warn for use of native system library directories])
++fi
++
+ dnl Use --enable-gold to decide if this linker should be the default.
+ dnl "install_as_default" is set to false if gold is the default linker.
+ dnl "installed_linker" is the installed BFD linker name.
+diff --git a/ld/ld.h b/ld/ld.h
+index d84ec4e..3476b26 100644
+--- a/ld/ld.h
++++ b/ld/ld.h
+@@ -169,6 +169,14 @@ typedef struct {
+   /* If set, display the target memory usage (per memory region).  */
+   bfd_boolean print_memory_usage;
+ 
++  /* If TRUE (the default) warn for uses of system directories when
++     cross linking.  */
++  bfd_boolean poison_system_directories;
++
++  /* If TRUE (default FALSE) give an error for uses of system
++     directories when cross linking instead of a warning.  */
++  bfd_boolean error_poison_system_directories;
++
+   /* Should we force section groups to be resolved?  Controlled with
+      --force-group-allocation on the command line or FORCE_GROUP_ALLOCATION
+      in the linker script.  */
+diff --git a/ld/ld.texinfo b/ld/ld.texinfo
+index 1dd7492..fb1438e 100644
+--- a/ld/ld.texinfo
++++ b/ld/ld.texinfo
+@@ -2357,6 +2357,18 @@ string identifying the original linked file does not change.
+ 
+ Passing @code{none} for @var{style} disables the setting from any
+ @code{--build-id} options earlier on the command line.
++
++@kindex --no-poison-system-directories
++@item --no-poison-system-directories
++Do not warn for @option{-L} options using system directories such as
++@file{/usr/lib} when cross linking.  This option is intended for use
++in chroot environments when such directories contain the correct
++libraries for the target system rather than the host.
++
++@kindex --error-poison-system-directories
++@item --error-poison-system-directories
++Give an error instead of a warning for @option{-L} options using
++system directories when cross linking.
+ @end table
+ 
+ @c man end
+diff --git a/ld/ldfile.c b/ld/ldfile.c
+index 96f9ecc..af231c0 100644
+--- a/ld/ldfile.c
++++ b/ld/ldfile.c
+@@ -114,6 +114,23 @@ ldfile_add_library_path (const char *name, bfd_boolean cmdline)
+     new_dirs->name = concat (ld_sysroot, name + 1, (const char *) NULL);
+   else
+     new_dirs->name = xstrdup (name);
++
++#ifdef ENABLE_POISON_SYSTEM_DIRECTORIES
++  if (command_line.poison_system_directories
++  && ((!strncmp (name, "/lib", 4))
++      || (!strncmp (name, "/usr/lib", 8))
++      || (!strncmp (name, "/usr/local/lib", 14))
++      || (!strncmp (name, "/usr/X11R6/lib", 14))))
++   {
++     if (command_line.error_poison_system_directories)
++       einfo (_("%X%P: error: library search path \"%s\" is unsafe for "
++            "cross-compilation\n"), name);
++     else
++       einfo (_("%P: warning: library search path \"%s\" is unsafe for "
++            "cross-compilation\n"), name);
++   }
++#endif
++
+ }
+ 
+ /* Try to open a BFD for a lang_input_statement.  */
+diff --git a/ld/ldlex.h b/ld/ldlex.h
+index 6f11e7b..0ca3110 100644
+--- a/ld/ldlex.h
++++ b/ld/ldlex.h
+@@ -144,6 +144,8 @@ enum option_values
+   OPTION_REQUIRE_DEFINED_SYMBOL,
+   OPTION_ORPHAN_HANDLING,
+   OPTION_FORCE_GROUP_ALLOCATION,
++  OPTION_NO_POISON_SYSTEM_DIRECTORIES,
++  OPTION_ERROR_POISON_SYSTEM_DIRECTORIES,
+ };
+ 
+ /* The initial parser states.  */
+diff --git a/ld/ldmain.c b/ld/ldmain.c
+index bb0b9cc..a23c56c 100644
+--- a/ld/ldmain.c
++++ b/ld/ldmain.c
+@@ -257,6 +257,8 @@ main (int argc, char **argv)
+   command_line.warn_mismatch = TRUE;
+   command_line.warn_search_mismatch = TRUE;
+   command_line.check_section_addresses = -1;
++  command_line.poison_system_directories = TRUE;
++  command_line.error_poison_system_directories = FALSE;
+ 
+   /* We initialize DEMANGLING based on the environment variable
+      COLLECT_NO_DEMANGLE.  The gcc collect2 program will demangle the
+diff --git a/ld/lexsup.c b/ld/lexsup.c
+index 4cad209..be7d584 100644
+--- a/ld/lexsup.c
++++ b/ld/lexsup.c
+@@ -530,6 +530,14 @@ static const struct ld_option ld_options[] =
+   { {"orphan-handling", required_argument, NULL, OPTION_ORPHAN_HANDLING},
+     '\0', N_("=MODE"), N_("Control how orphan sections are handled."),
+     TWO_DASHES },
++  { {"no-poison-system-directories", no_argument, NULL,
++    OPTION_NO_POISON_SYSTEM_DIRECTORIES},
++    '\0', NULL, N_("Do not warn for -L options using system directories"),
++    TWO_DASHES },
++  { {"error-poison-system-directories", no_argument, NULL,
++    OPTION_ERROR_POISON_SYSTEM_DIRECTORIES},
++    '\0', NULL, N_("Give an error for -L options using system directories"),
++    TWO_DASHES },
+ };
+ 
+ #define OPTION_COUNT ARRAY_SIZE (ld_options)
+@@ -542,6 +550,7 @@ parse_args (unsigned argc, char **argv)
+   int ingroup = 0;
+   char *default_dirlist = NULL;
+   char *shortopts;
++  char *BR_paranoid_env;
+   struct option *longopts;
+   struct option *really_longopts;
+   int last_optind;
+@@ -1516,6 +1525,14 @@ parse_args (unsigned argc, char **argv)
+           }
+           break;
+ 
++	case OPTION_NO_POISON_SYSTEM_DIRECTORIES:
++	  command_line.poison_system_directories = FALSE;
++	  break;
++
++	case OPTION_ERROR_POISON_SYSTEM_DIRECTORIES:
++	  command_line.error_poison_system_directories = TRUE;
++	  break;
++
+ 	case OPTION_PUSH_STATE:
+ 	  input_flags.pushed = xmemdup (&input_flags,
+ 					sizeof (input_flags),
+@@ -1559,6 +1576,10 @@ parse_args (unsigned argc, char **argv)
+       command_line.soname = NULL;
+     }
+ 
++  BR_paranoid_env = getenv("BR_COMPILER_PARANOID_UNSAFE_PATH");
++  if (BR_paranoid_env && strlen(BR_paranoid_env) > 0)
++    command_line.error_poison_system_directories = TRUE;
++
+   while (ingroup)
+     {
+       lang_leave_group ();