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kumquat-buildroot/package/binutils/arc-2016.09-eng005/0600-poison-system-directories.patch
Alexey Brodkin 4520524ba0 toolchain: Bump ARC tools to arc-2016.09-eng005 
With this commit we're starting a series of updates of ARC tools.
Significantly rewritten arc-2016.03 tools introduced way too many
problems highlighted by Buildroot autobuilder. Now in attempt to
resolve as many issues as possible by the time final release of
arc-2016.09 tools is cut we'll be executing arc-2016.09 series
with engineering snapshots like this one.

We decided to go this way instead of applying separate patches here
and there because ongoing development introduces quite a lot of
changes and separate patches are not practical in Buildroot.

Moreover this will give us very clean visibility of number of
issues we see (hopefully it will decrease over time).

One of the important changes introduced in this engineering build
is initial set of changes for proper support of PIE on ARC in terms
of both building on host and running on ARC target. I expect some
PIE-related build breakages to go away and new ones will be treated
as the high-priority issues to be fixed ASAP.

For now we only update Binutils and GCC while keeping GDB
as it is of arc-2016.03 release because there're some issues
we'd like to resolve before releasing it to wider audience.

So again note this is one of the first engineering builds of
arc-2016.09 series and it might have all kinds of breakages,
please don't use it for production builds.

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: arc-buildroot@synopsys.com
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2016-06-29 22:12:47 +02:00

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From be366461dd49e760440fb28eaee5164eb281adcc 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 276fb77..35c58eb 100644
--- a/ld/config.in
+++ b/ld/config.in
@@ -14,6 +14,9 @@
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
@@ -786,6 +786,7 @@ with_lib_path
enable_targets
enable_64_bit_bfd
with_sysroot
+enable_poison_system_directories
enable_gold
enable_got
enable_compressed_debug_sections
@@ -1442,6 +1443,8 @@ 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)
@@ -15491,7 +15494,18 @@ 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
@@ -164,6 +164,14 @@ 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;
+
/* Big or little endian as set on command line. */
enum endian_enum endian;
diff --git a/ld/ld.texinfo b/ld/ld.texinfo
index 1dd7492..fb1438e 100644
--- a/ld/ld.texinfo
+++ b/ld/ld.texinfo
@@ -2332,6 +2332,18 @@ 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 1439309..086b354 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_PRINT_MEMORY_USAGE,
OPTION_REQUIRE_DEFINED_SYMBOL,
OPTION_ORPHAN_HANDLING,
+ 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 ();
--
2.4.3
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