1 files changed, 149 insertions, 0 deletions

diff --git a/meta/packages/gcc/gcc-4.5.0/gcc-poison-system-directories.patch b/meta/packages/gcc/gcc-4.5.0/gcc-poison-system-directories.patch
new file mode 100644
index 0000000000..e68a2de2a2
--- /dev/null
+++ b/meta/packages/gcc/gcc-4.5.0/gcc-poison-system-directories.patch
@@ -0,0 +1,149 @@
+       gcc/
+       2008-07-02  Joseph Myers  <joseph@codesourcery.com>
+       * c-incpath.c: Include toplev.h.
+       (merge_include_chains): Use warning instead of cpp_error for
+       system directory poisoning diagnostic.
+       * Makefile.in (c-incpath.o): Depend on toplev.h.
+       * gcc.c (LINK_COMMAND_SPEC): Pass
+       --error-poison-system-directories if
+       -Werror=poison-system-directories.
+
+       2007-06-13  Joseph Myers  <joseph@codesourcery.com>
+       * common.opt (--Wno-poison-system-directories): New.
+       * doc/invoke.texi (-Wno-poison-system-directories): Document.
+       * c-incpath.c: Include flags.h.
+       (merge_include_chains): Check flag_poison_system_directories.
+       * gcc.c (LINK_COMMAND_SPEC): Pass --no-poison-system-directories
+       to linker if -Wno-poison-system-directories.
+       * Makefile.in (c-incpath.o): Depend on $(FLAGS_H).
+
+       2007-03-20  Daniel Jacobowitz  <dan@codesourcery.com>
+                   Joseph Myers  <joseph@codesourcery.com>
+       * configure.ac (--enable-poison-system-directories): New option.
+       * configure, config.in: Regenerate.
+       * c-incpath.c (merge_include_chains): If
+       ENABLE_POISON_SYSTEM_DIRECTORIES defined, warn for use of
+       /usr/include, /usr/local/include or /usr/X11R6/include.
+
+Index: gcc-4.5.0/gcc/common.opt
+===================================================================
+--- gcc-4.5.0.orig/gcc/common.opt       2010-03-17 20:01:09.000000000 -0700
++++ gcc-4.5.0/gcc/common.opt    2010-06-25 11:35:39.965383734 -0700
+@@ -152,6 +152,10 @@
+ Common Var(warn_padded) Warning
+ Warn when padding is required to align structure members
+ 
++Wpoison-system-directories
++Common Var(flag_poison_system_directories) Init(1)
++Warn for -I and -L options using system directories if cross compiling
++
+ Wshadow
+ Common Var(warn_shadow) Warning
+ Warn when one local variable shadows another
+Index: gcc-4.5.0/gcc/config.in
+===================================================================
+--- gcc-4.5.0.orig/gcc/config.in        2010-04-14 02:30:07.000000000 -0700
++++ gcc-4.5.0/gcc/config.in     2010-06-25 11:35:39.969383588 -0700
+@@ -132,6 +132,12 @@
+ #endif
+ 
+ 
++/* Define to warn for use of native system header directories */
++#ifndef USED_FOR_TARGET
++#undef ENABLE_POISON_SYSTEM_DIRECTORIES
++#endif
++
++
+ /* Define if you want all operations on RTL (the basic data structure of the
+    optimizer and back end) to be checked for dynamic type safety at runtime.
+    This is quite expensive. */
+Index: gcc-4.5.0/gcc/configure.ac
+===================================================================
+--- gcc-4.5.0.orig/gcc/configure.ac     2010-06-25 11:34:01.433382161 -0700
++++ gcc-4.5.0/gcc/configure.ac  2010-06-25 11:35:39.969383588 -0700
+@@ -4276,6 +4276,16 @@
+ fi)
+ AC_SUBST(slibdir)
+ 
++AC_ARG_ENABLE([poison-system-directories],
++             AS_HELP_STRING([--enable-poison-system-directories],
++                            [warn for use of native system header 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 header directories])
++fi
++
+ # Substitute configuration variables
+ AC_SUBST(subdirs)
+ AC_SUBST(srcdir)
+Index: gcc-4.5.0/gcc/doc/invoke.texi
+===================================================================
+--- gcc-4.5.0.orig/gcc/doc/invoke.texi  2010-04-06 07:02:22.000000000 -0700
++++ gcc-4.5.0/gcc/doc/invoke.texi       2010-06-25 11:35:39.992666345 -0700
+@@ -252,6 +252,7 @@
+ -Woverlength-strings  -Wpacked  -Wpacked-bitfield-compat  -Wpadded @gol
+ -Wparentheses  -Wpedantic-ms-format -Wno-pedantic-ms-format @gol
+ -Wpointer-arith  -Wno-pointer-to-int-cast @gol
++-Wno-poison-system-directories @gol
+ -Wredundant-decls @gol
+ -Wreturn-type  -Wsequence-point  -Wshadow @gol
+ -Wsign-compare  -Wsign-conversion  -Wstack-protector @gol
+@@ -3603,6 +3604,14 @@
+ option will @emph{not} warn about unknown pragmas in system
+ headers---for that, @option{-Wunknown-pragmas} must also be used.
+ 
++@item -Wno-poison-system-directories
++@opindex Wno-poison-system-directories
++Do not warn for @option{-I} or @option{-L} options using system
++directories such as @file{/usr/include} when cross compiling.  This
++option is intended for use in chroot environments when such
++directories contain the correct headers and libraries for the target
++system rather than the host.
++
+ @item -Wfloat-equal
+ @opindex Wfloat-equal
+ @opindex Wno-float-equal
+Index: gcc-4.5.0/gcc/gcc.c
+===================================================================
+--- gcc-4.5.0.orig/gcc/gcc.c    2010-02-11 04:23:08.000000000 -0800
++++ gcc-4.5.0/gcc/gcc.c 2010-06-25 11:35:40.009381858 -0700
+@@ -792,6 +792,8 @@
+     %{flto} %{fwhopr} %l " LINK_PIE_SPEC \
+    "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
+     %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
++    %{Wno-poison-system-directories:--no-poison-system-directories}\
++    %{Werror=poison-system-directories:--error-poison-system-directories}\
+     %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
+     %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)} %(mflib)\
+     %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
+Index: gcc-4.5.0/gcc/incpath.c
+===================================================================
+--- gcc-4.5.0.orig/gcc/incpath.c        2009-11-25 02:55:54.000000000 -0800
++++ gcc-4.5.0/gcc/incpath.c     2010-06-25 11:35:40.017209818 -0700
+@@ -353,6 +353,24 @@
+        }
+       fprintf (stderr, _("End of search list.\n"));
+     }
++
++#ifdef ENABLE_POISON_SYSTEM_DIRECTORIES
++  if (flag_poison_system_directories)
++    {
++       struct cpp_dir *p;
++
++       for (p = heads[QUOTE]; p; p = p->next)
++         {
++          if ((!strncmp (p->name, "/usr/include", 12))
++              || (!strncmp (p->name, "/usr/local/include", 18))
++              || (!strncmp (p->name, "/usr/X11R6/include", 18)))
++            warning (OPT_Wpoison_system_directories,
++                     "include location \"%s\" is unsafe for "
++                     "cross-compilation",
++                     p->name);
++         }
++    }
++#endif
+ }
+ 
+ /* Use given -I paths for #include "..." but not #include <...>, and