diff options
Diffstat (limited to 'package/gcc')
| -rw-r--r-- | package/gcc/arc-2014.08/910-gcc-poison-system-directories.patch | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/package/gcc/arc-2014.08/910-gcc-poison-system-directories.patch b/package/gcc/arc-2014.08/910-gcc-poison-system-directories.patch new file mode 100644 index 0000000000..67b37997b8 --- /dev/null +++ b/package/gcc/arc-2014.08/910-gcc-poison-system-directories.patch @@ -0,0 +1,221 @@ +From 160397ef3c3331099af028f1b8d3e085b07d88ad Mon Sep 17 00:00:00 2001 +From: Khem Raj <raj.khem@gmail.com> +Date: Fri, 29 Mar 2013 08:59:00 +0400 +Subject: [PATCH 16/35] gcc: poison-system-directories + +Adapted to Buildroot and gcc arc-4.8-R3 by Thomas Petazzoni, +especially the addition of the BR_COMPILER_PARANOID_UNSAFE_PATH +environment variable. + +Signed-off-by: Khem Raj <raj.khem@gmail.com> +Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.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(-) + +Index: b/gcc/common.opt +=================================================================== +--- a/gcc/common.opt ++++ b/gcc/common.opt +@@ -595,6 +595,10 @@ + 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 +Index: b/gcc/config.in +=================================================================== +--- a/gcc/config.in ++++ b/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. */ +Index: b/gcc/configure +=================================================================== +--- a/gcc/configure ++++ b/gcc/configure +@@ -917,6 +917,7 @@ + with_system_zlib + enable_maintainer_mode + enable_version_specific_runtime_libs ++enable_poison_system_directories + enable_plugin + enable_libquadmath_support + with_linker_hash_style +@@ -1630,6 +1631,8 @@ + --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 + --disable-libquadmath-support + disable libquadmath support for Fortran +@@ -27103,6 +27106,19 @@ + 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 + + +Index: b/gcc/configure.ac +=================================================================== +--- a/gcc/configure.ac ++++ b/gcc/configure.ac +@@ -5063,6 +5063,16 @@ + [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) +Index: b/gcc/doc/invoke.texi +=================================================================== +--- a/gcc/doc/invoke.texi ++++ b/gcc/doc/invoke.texi +@@ -258,6 +258,7 @@ + -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 -Wno-return-local-addr @gol + -Wreturn-type -Wsequence-point -Wshadow @gol + -Wsign-compare -Wsign-conversion -Wsizeof-pointer-memaccess @gol +@@ -4025,6 +4026,14 @@ + for most targets, it is made up of code and thus requires the stack + to be made executable in order for the program to work properly. + ++@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: b/gcc/gcc.c +=================================================================== +--- a/gcc/gcc.c ++++ b/gcc/gcc.c +@@ -740,6 +740,8 @@ + "%{fuse-ld=*:-fuse-ld=%*}\ + %X %{o*} %{e*} %{N} %{n} %{r}\ + %{s} %{t} %{u*} %{z} %{Z} %{!nostdlib:%{!nostartfiles:%S}}\ ++ %{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)}\ +@@ -3990,6 +3992,12 @@ + gcc_assert (!compare_debug_opt); + } + ++ temp = getenv("BR_COMPILER_PARANOID_UNSAFE_PATH"); ++ if (temp && strlen(temp) > 0) ++ { ++ save_switch("-Werror=poison-system-directories", 0, NULL, false, true); ++ } ++ + /* Set up the search paths. We add directories that we expect to + contain GNU Toolchain components before directories specified by + the machine description so that we will find GNU components (like +Index: b/gcc/incpath.c +=================================================================== +--- a/gcc/incpath.c ++++ b/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 @@ + } + 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 +Index: b/gcc/config/arc/arc.h +=================================================================== +--- a/gcc/config/arc/arc.h ++++ b/gcc/config/arc/arc.h +@@ -205,6 +205,8 @@ + %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ + %(linker) %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:%:include(libgomp.spec)%(link_gomp)} %(mflib)\ + %{fprofile-arcs|fprofile-generate|coverage:-lgcov}\ |
