+++ /dev/null
-From b100e9d16bfe6725b2624902af457ecfa490b150 Mon Sep 17 00:00:00 2001
-From: Romain Naour <romain.naour@gmail.com>
-Date: Fri, 25 Dec 2015 11:45:38 +0100
-Subject: [PATCH] poison-system-directories
-
-Patch adapted to binutils 2.23.2 and extended to use
-BR_COMPILER_PARANOID_UNSAFE_PATH by Thomas Petazzoni.
-
-[Romain: rebase on top of 2.26]
-Signed-off-by: Romain Naour <romain.naour@gmail.com>
-[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>
----
- ld/config.in | 3 +++
- ld/configure | 14 ++++++++++++++
- ld/configure.ac | 10 ++++++++++
- ld/ld.h | 8 ++++++++
- ld/ld.texinfo | 12 ++++++++++++
- ld/ldfile.c | 17 +++++++++++++++++
- ld/ldlex.h | 2 ++
- ld/ldmain.c | 2 ++
- ld/lexsup.c | 21 +++++++++++++++++++++
- 9 files changed, 89 insertions(+)
-
-diff --git a/ld/config.in b/ld/config.in
-index 5d91380..ffe84a7 100644
---- a/ld/config.in
-+++ b/ld/config.in
-@@ -21,6 +21,9 @@
- 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 da20ab5..63e3da7 100755
---- a/ld/configure
-+++ b/ld/configure
-@@ -785,6 +785,7 @@ with_lib_path
- enable_targets
- enable_64_bit_bfd
- with_sysroot
-+enable_poison_system_directories
- enable_gold
- enable_got
- enable_compressed_debug_sections
-@@ -1443,6 +1444,8 @@ 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)
-@@ -15497,7 +15500,18 @@ 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 "${enable_got+set}" = set; then :
-diff --git a/ld/configure.ac b/ld/configure.ac
-index 34315e6..5ade9a0 100644
---- a/ld/configure.ac
-+++ b/ld/configure.ac
-@@ -95,6 +95,16 @@ AC_SUBST(use_sysroot)
- AC_SUBST(TARGET_SYSTEM_ROOT)
- AC_SUBST(TARGET_SYSTEM_ROOT_DEFINE)
-
-+AC_ARG_ENABLE([poison-system-directories],
-+ AS_HELP_STRING([--enable-poison-system-directories],
-+ [warn for use of native system library directories]),,
-+ [enable_poison_system_directories=no])
-+if test "x${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 162e156..7d6d7ef 100644
---- a/ld/ld.h
-+++ b/ld/ld.h
-@@ -177,6 +177,14 @@ typedef struct
- in the linker script. */
- bfd_boolean force_group_allocation;
-
-+ /* 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;
-+
- /* Big or little endian as set on command line. */
- enum endian_enum endian;
-
-diff --git a/ld/ld.texinfo b/ld/ld.texinfo
-index bb5f719..78501e4 100644
---- a/ld/ld.texinfo
-+++ b/ld/ld.texinfo
-@@ -2480,6 +2480,18 @@ 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 f7e5473..2cd84d3 100644
---- a/ld/ldfile.c
-+++ b/ld/ldfile.c
-@@ -116,6 +116,23 @@ ldfile_add_library_path (const char *name, bfd_boolean cmdline)
- new_dirs->name = concat (ld_sysroot, name + strlen ("$SYSROOT"), (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 5aa7f6b..cb655e0 100644
---- a/ld/ldlex.h
-+++ b/ld/ldlex.h
-@@ -147,6 +147,8 @@ 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 ee5ab11..5f6effd 100644
---- a/ld/ldmain.c
-+++ b/ld/ldmain.c
-@@ -270,6 +270,8 @@ 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 08106bc..d619d50 100644
---- a/ld/lexsup.c
-+++ b/ld/lexsup.c
-@@ -538,6 +538,14 @@ 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)
-@@ -550,6 +558,7 @@ 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;
-@@ -1534,6 +1543,14 @@ 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),
-@@ -1577,6 +1594,10 @@ 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 ();
---
-2.9.4
-
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