diff options
Diffstat (limited to 'main/gcc/0003-gcc-poison-system-directories.patch')
| -rw-r--r-- | main/gcc/0003-gcc-poison-system-directories.patch | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/main/gcc/0003-gcc-poison-system-directories.patch b/main/gcc/0003-gcc-poison-system-directories.patch new file mode 100644 index 0000000000..05138976c3 --- /dev/null +++ b/main/gcc/0003-gcc-poison-system-directories.patch @@ -0,0 +1,194 @@ +From 48c670d2678e0323d88eb72205e039f393cabe05 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 03/39] gcc: poison-system-directories + +Signed-off-by: Khem Raj <raj.khem@gmail.com> + +Upstream-Status: Inappropriate [distribution: codesourcery] +--- + gcc/common.opt | 4 ++++ + gcc/config.in | 6 ++++++ + gcc/configure | 16 ++++++++++++++++ + gcc/configure.ac | 10 ++++++++++ + gcc/doc/invoke.texi | 9 +++++++++ + gcc/gcc.c | 2 ++ + gcc/incpath.c | 19 +++++++++++++++++++ + 7 files changed, 66 insertions(+) + +diff --git a/gcc/common.opt b/gcc/common.opt +index d6ef85928f3..7b29efe3882 100644 +--- a/gcc/common.opt ++++ b/gcc/common.opt +@@ -679,6 +679,10 @@ Wreturn-local-addr + Common Var(warn_return_local_addr) Init(1) Warning + Warn about returning a pointer/reference to a local or temporary variable. + ++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 variable shadows another. Same as -Wshadow=global. +diff --git a/gcc/config.in b/gcc/config.in +index 5bccb408016..1c784a8276b 100644 +--- a/gcc/config.in ++++ b/gcc/config.in +@@ -194,6 +194,12 @@ + #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. */ +diff --git a/gcc/configure b/gcc/configure +index 5c345ce0fd7..cafd05fd150 100755 +--- a/gcc/configure ++++ b/gcc/configure +@@ -953,6 +953,7 @@ 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 +@@ -1696,6 +1697,8 @@ 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 +@@ -29715,6 +29718,19 @@ if test "${enable_version_specific_runtime_libs+set}" = set; then : + fi + + ++# Check whether --enable-poison-system-directories was given. ++if test "${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 ++ ++$as_echo "#define ENABLE_POISON_SYSTEM_DIRECTORIES 1" >>confdefs.h ++ ++fi ++ + # Substitute configuration variables + + +diff --git a/gcc/configure.ac b/gcc/configure.ac +index 65dbf1f2f80..dd5b38195ce 100644 +--- a/gcc/configure.ac ++++ b/gcc/configure.ac +@@ -6341,6 +6341,16 @@ AC_ARG_ENABLE(version-specific-runtime-libs, + [specify that runtime libraries should be + installed in a compiler-specific directory])]) + ++AC_ARG_ENABLE([poison-system-directories], ++ AS_HELP_STRING([--enable-poison-system-directories], ++ [warn for use of native system header directories]),, ++ [enable_poison_system_directories=no]) ++if test "x${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) +diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi +index 255149fcfb8..cb71b60fe3c 100644 +--- a/gcc/doc/invoke.texi ++++ b/gcc/doc/invoke.texi +@@ -303,6 +303,7 @@ Objective-C and Objective-C++ Dialects}. + -Wpacked -Wpacked-bitfield-compat -Wpacked-not-aligned -Wpadded @gol + -Wparentheses -Wno-pedantic-ms-format @gol + -Wplacement-new -Wplacement-new=@var{n} @gol ++-Wno-poison-system-directories @gol + -Wpointer-arith -Wpointer-compare -Wno-pointer-to-int-cast @gol + -Wno-pragmas -Wredundant-decls -Wrestrict -Wno-return-local-addr @gol + -Wreturn-type -Wsequence-point -Wshadow -Wno-shadow-ivar @gol +@@ -5712,6 +5713,14 @@ made up of data only and thus requires no special treatment. But, 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 +diff --git a/gcc/gcc.c b/gcc/gcc.c +index a716f708259..02b3cd39fc2 100644 +--- a/gcc/gcc.c ++++ b/gcc/gcc.c +@@ -1037,6 +1037,8 @@ proper position among the other output files. */ + "%{fuse-ld=*:-fuse-ld=%*} " LINK_COMPRESS_DEBUG_SPEC \ + "%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|no-pie|static-pie:} %{L*} %(mfwrap) %(link_libgcc) " \ + VTABLE_VERIFICATION_SPEC " " SANITIZER_EARLY_SPEC " %o " CHKP_SPEC " \ + %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\ +diff --git a/gcc/incpath.c b/gcc/incpath.c +index b11c6a57939..e3b7a21966f 100644 +--- a/gcc/incpath.c ++++ b/gcc/incpath.c +@@ -26,6 +26,7 @@ + #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. */ +@@ -393,6 +394,26 @@ merge_include_chains (const char *sysroot, cpp_reader *pfile, int verbose) + } + fprintf (stderr, _("End of search list.\n")); + } ++ ++#ifdef ENABLE_POISON_SYSTEM_DIRECTORIES ++ if (flag_poison_system_directories) ++ { ++ struct cpp_dir *p; ++ ++ for (p = heads[INC_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)) ++ || (!strncmp (p->name, "/sw/include", 11)) ++ || (!strncmp (p->name, "/opt/include", 12))) ++ 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 +-- +2.17.0 + |