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|
This patch is recived from Mark Hatle
purpose: warn for uses of system directories when cross linking
Signed-Off-By: Mark Hatle <mark.hatle@windriver.com>
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.in (--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.
Index: binutils-2.20.1/ld/config.in
===================================================================
--- binutils-2.20.1.orig/ld/config.in
+++ binutils-2.20.1/ld/config.in
@@ -4,6 +4,9 @@
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
Index: binutils-2.20.1/ld/configure.in
===================================================================
--- binutils-2.20.1.orig/ld/configure.in
+++ binutils-2.20.1/ld/configure.in
@@ -69,6 +69,16 @@ 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
+
AC_ARG_ENABLE([got],
AS_HELP_STRING([--enable-got=<type>],
[GOT handling scheme (target, single, negative, multigot)]),
Index: binutils-2.20.1/ld/ld.h
===================================================================
--- binutils-2.20.1.orig/ld/ld.h
+++ binutils-2.20.1/ld/ld.h
@@ -176,6 +176,14 @@ typedef struct {
input files. */
bfd_boolean accept_unknown_input_arch;
+ /* 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;
Index: binutils-2.20.1/ld/ld.texinfo
===================================================================
--- binutils-2.20.1.orig/ld/ld.texinfo
+++ binutils-2.20.1/ld/ld.texinfo
@@ -2084,6 +2084,18 @@ string identifying the original linked f
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
Index: binutils-2.20.1/ld/ldfile.c
===================================================================
--- binutils-2.20.1.orig/ld/ldfile.c
+++ binutils-2.20.1/ld/ldfile.c
@@ -120,6 +120,23 @@ ldfile_add_library_path (const char *nam
{
new_dirs->name = xstrdup (name);
new_dirs->sysrooted = is_sysrooted_pathname (name, FALSE);
+
+#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
+
}
}
Index: binutils-2.20.1/ld/ldmain.c
===================================================================
--- binutils-2.20.1.orig/ld/ldmain.c
+++ binutils-2.20.1/ld/ldmain.c
@@ -252,6 +252,8 @@ 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
Index: binutils-2.20.1/ld/lexsup.c
===================================================================
--- binutils-2.20.1.orig/ld/lexsup.c
+++ binutils-2.20.1/ld/lexsup.c
@@ -166,7 +166,9 @@ enum option_values
OPTION_WARN_SHARED_TEXTREL,
OPTION_WARN_ALTERNATE_EM,
OPTION_REDUCE_MEMORY_OVERHEADS,
- OPTION_DEFAULT_SCRIPT
+ OPTION_DEFAULT_SCRIPT,
+ OPTION_NO_POISON_SYSTEM_DIRECTORIES,
+ OPTION_ERROR_POISON_SYSTEM_DIRECTORIES
};
/* The long options. This structure is used for both the option
@@ -575,6 +577,14 @@ static const struct ld_option ld_options
TWO_DASHES },
{ {"wrap", required_argument, NULL, OPTION_WRAP},
'\0', N_("SYMBOL"), N_("Use wrapper functions for SYMBOL"), 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)
@@ -1480,6 +1490,14 @@ parse_args (unsigned argc, char **argv)
einfo (_("%P%X: --hash-size needs a numeric argument\n"));
}
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;
}
}
diff -ur binutils-2.20.1.orig/ld/configure binutils-2.20.1/ld/configure
--- binutils-2.20.1.orig/ld/configure 2010-03-03 08:06:22.000000000 -0600
+++ binutils-2.20.1/ld/configure 2010-09-30 11:19:35.776990594 -0500
@@ -901,6 +904,7 @@
enable_targets
enable_64_bit_bfd
with_sysroot
+enable_poison_system_directories
enable_got
enable_werror
enable_build_warnings
@@ -1548,6 +1552,8 @@
(and sometimes confusing) to the casual installer
--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-got=<type> GOT handling scheme (target, single, negative,
multigot)
--enable-werror treat compile warnings as errors
@@ -4302,6 +4334,19 @@
+# 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 :
enableval=$enable_got; case "${enableval}" in
|
