[gentoo-commits] gentoo commit in src/patchsets/gcc/4.9.0/gentoo: 67_all_gcc-poison-system-directories.patch 67_all_gcc-poison-system-directories.patch.updateme README.history

[Ryan Hill (rhill)]

rhill       14/05/24 09:20:08

  Modified:             README.history
  Added:                67_all_gcc-poison-system-directories.patch
  Removed:              67_all_gcc-poison-system-directories.patch.updateme
  Log:
  Update poison-path patch from openembedded.

Revision  Changes    Path
1.10                 src/patchsets/gcc/4.9.0/gentoo/README.history

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.9.0/gentoo/README.history?rev=1.10&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.9.0/gentoo/README.history?rev=1.10&content-type=text/plain
diff : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.9.0/gentoo/README.history?r1=1.9&r2=1.10

Index: README.history
===================================================================
RCS file: /var/cvsroot/gentoo/src/patchsets/gcc/4.9.0/gentoo/README.history,v
retrieving revision 1.9
retrieving revision 1.10
diff -u -r1.9 -r1.10
--- README.history	22 May 2014 21:09:13 -0000	1.9
+++ README.history	24 May 2014 09:20:08 -0000	1.10
@@ -1,3 +1,6 @@
+1.1		(pending)
+	U 67_all_gcc-poison-system-directories.patch
+
 1.0		18 May 2014
 	U 09_all_default-ssp.patch
 	U 10_all_default-fortify-source.patch



1.1                  src/patchsets/gcc/4.9.0/gentoo/67_all_gcc-poison-system-directories.patch

file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.9.0/gentoo/67_all_gcc-poison-system-directories.patch?rev=1.1&view=markup
plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/gcc/4.9.0/gentoo/67_all_gcc-poison-system-directories.patch?rev=1.1&content-type=text/plain

Index: 67_all_gcc-poison-system-directories.patch
===================================================================
http://cgit.openembedded.org/openembedded-core/tree/meta/recipes-devtools/gcc/gcc-4.9/0016-gcc-poison-system-directories.patch

From: Khem Raj <raj.khem@×××××.com>
Date: Fri, 29 Mar 2013 08:59:00 +0400
Subject: [PATCH 16/35] gcc: poison-system-directories

Signed-off-by: Khem Raj <raj.khem@×××××.com>

Upstream-Status: Inappropriate [distribution: codesourcery]
---
 gcc/Makefile.in     |    2 +-
 gcc/common.opt      |    4 ++++
 gcc/config.in       |    6 ++++++
 gcc/configure       |   20 ++++++++++++++++++--
 gcc/configure.ac    |   10 ++++++++++
 gcc/doc/invoke.texi |    9 +++++++++
 gcc/gcc.c           |    2 ++
 gcc/incpath.c       |   19 +++++++++++++++++++
 8 files changed, 69 insertions(+), 3 deletions(-)

--- gcc-4.9-20140316.orig/gcc/common.opt
+++ gcc-4.9-20140316/gcc/common.opt
@@ -603,6 +603,10 @@ Wpedantic
 Common Var(pedantic) Warning
 Issue warnings needed for strict compliance to the standard
 
+Wpoison-system-directories
+Common Var(flag_poison_system_directories) Init(1) Warning
+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
--- gcc-4.9-20140316.orig/gcc/configure.ac
+++ gcc-4.9-20140316/gcc/configure.ac
@@ -5366,6 +5366,16 @@ AC_ARG_ENABLE(version-specific-runtime-l
                 [specify that runtime libraries should be
                  installed in a compiler-specific directory])])
 
+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${enable_poison_system_directories}" = "xyes"; then
+  AC_DEFINE([ENABLE_POISON_SYSTEM_DIRECTORIES],
+           [1],
+           [Define to warn for use of native system header directories])
+fi
+
 # Substitute configuration variables
 AC_SUBST(subdirs)
 AC_SUBST(srcdir)
--- gcc-4.9-20140316.orig/gcc/configure
+++ gcc-4.9-20140316/gcc/configure
@@ -928,6 +928,7 @@ with_system_zlib
 enable_maintainer_mode
 enable_link_mutex
 enable_version_specific_runtime_libs
+enable_poison_system_directories
 enable_plugin
 enable_host_shared
 enable_libquadmath_support
@@ -1648,6 +1649,8 @@ Optional Features:
   --enable-version-specific-runtime-libs
                           specify that runtime libraries should be installed
                           in a compiler-specific directory
+  --enable-poison-system-directories
+                          warn for use of native system header directories
   --enable-plugin         enable plugin support
   --enable-host-shared    build host code as shared libraries
   --disable-libquadmath-support
@@ -27702,6 +27705,19 @@ if test "${enable_version_specific_runti
 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
+
 # Substitute configuration variables
 
 
--- gcc-4.9-20140316.orig/gcc/config.in
+++ gcc-4.9-20140316/gcc/config.in
@@ -138,6 +138,12 @@
 #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. */
--- gcc-4.9-20140316.orig/gcc/gcc.c
+++ gcc-4.9-20140316/gcc/gcc.c
@@ -764,6 +764,8 @@ proper position among the other output f
    "%{fuse-ld=*:-fuse-ld=%*}\
     %X %{o*} %{e*} %{N} %{n} %{r}\
     %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}} " VTABLE_VERIFICATION_SPEC " \
+    %{Wno-poison-system-directories:--no-poison-system-directories}\
+    %{Werror=poison-system-directories:--error-poison-system-directories}\
     %{static:} %{L*} %(mfwrap) %(link_libgcc) " SANITIZER_EARLY_SPEC " %o\
     %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
     %{fgnu-tm:%:include(libitm.spec)%(link_itm)}\
--- gcc-4.9-20140316.orig/gcc/incpath.c
+++ gcc-4.9-20140316/gcc/incpath.c
@@ -28,6 +28,7 @@
 #include "intl.h"
 #include "incpath.h"
 #include "cppdefault.h"
+#include "diagnostic-core.h"
 
 /* Microsoft Windows does not natively support inodes.
    VMS has non-numeric inodes.  */
@@ -382,6 +383,24 @@ merge_include_chains (const char *sysroo
 	}
       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
--- a/gcc/doc/gcc.info
+++ b/gcc/doc/gcc.info
@@ -558,6 +558,7 @@ _Warning Options_
           -Woverlength-strings  -Wpacked  -Wpacked-bitfield-compat  -Wpadded
           -Wparentheses  -Wpedantic-ms-format -Wno-pedantic-ms-format
           -Wpointer-arith  -Wno-pointer-to-int-cast
+          -Wno-poison-system-directories
           -Wredundant-decls  -Wno-return-local-addr
           -Wreturn-type  -Wsequence-point  -Wshadow
           -Wsign-compare  -Wsign-conversion -Wfloat-conversion
@@ -4010,6 +4011,13 @@ compiler warns that an unrecognized option is present.
      pragmas in system headers--for that, '-Wunknown-pragmas' must also
      be used.
 
+'-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.
+
 '-Wtrampolines'
      Warn about trampolines generated for pointers to nested functions.