diff options
Diffstat (limited to 'main/gcc/0002-gcc-poison-system-directories.patch')
| -rw-r--r-- | main/gcc/0002-gcc-poison-system-directories.patch | 203 |
1 files changed, 203 insertions, 0 deletions
diff --git a/main/gcc/0002-gcc-poison-system-directories.patch b/main/gcc/0002-gcc-poison-system-directories.patch new file mode 100644 index 00000000000..b14c921c208 --- /dev/null +++ b/main/gcc/0002-gcc-poison-system-directories.patch @@ -0,0 +1,203 @@ +From 4fa620d8c3e6730211bfb071eb4c817320491bd0 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 02/35] gcc: poison-system-directories + +Add /sw/include and /opt/include based on the original +zecke-no-host-includes.patch patch. The original patch checked for +/usr/include, /sw/include and /opt/include and then triggered a failure and +aborted. + +Instead, we add the two missing items to the current scan. If the user +wants this to be a failure, they can add "-Werror=poison-system-directories". + +Signed-off-by: Mark Hatle <mark.hatle@windriver.com> +Signed-off-by: Khem Raj <raj.khem@gmail.com> + +Upstream-Status: Pending +--- + gcc/common.opt | 4 ++++ + gcc/config.in | 6 ++++++ + gcc/configure | 16 ++++++++++++++++ + gcc/configure.ac | 10 ++++++++++ + gcc/doc/invoke.texi | 9 +++++++++ + gcc/gcc.cc | 2 ++ + gcc/incpath.cc | 21 +++++++++++++++++++++ + 7 files changed, 68 insertions(+) + +diff --git a/gcc/common.opt b/gcc/common.opt +index 862c474d3c8..64c4277c991 100644 +--- a/gcc/common.opt ++++ b/gcc/common.opt +@@ -711,6 +711,10 @@ 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 4cad077bfbe..0679fbbf4c6 100644 +--- a/gcc/config.in ++++ b/gcc/config.in +@@ -236,6 +236,12 @@ + #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 c7b26d1927d..8c46369f73f 100755 +--- a/gcc/configure ++++ b/gcc/configure +@@ -1026,6 +1026,7 @@ enable_maintainer_mode + enable_link_mutex + enable_link_serialization + enable_version_specific_runtime_libs ++enable_poison_system_directories + enable_plugin + enable_host_shared + enable_libquadmath_support +@@ -1788,6 +1789,8 @@ 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 +@@ -31753,6 +31756,19 @@ 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 ++ ++$as_echo "#define ENABLE_POISON_SYSTEM_DIRECTORIES 1" >>confdefs.h ++ ++fi ++ + # Substitute configuration variables + + +diff --git a/gcc/configure.ac b/gcc/configure.ac +index 09082e8ccae..5504bf6eb01 100644 +--- a/gcc/configure.ac ++++ b/gcc/configure.ac +@@ -7292,6 +7292,16 @@ AC_ARG_ENABLE(version-specific-runtime-libs, + [specify that runtime libraries should be + installed in a compiler-specific directory])]) + ++AC_ARG_ENABLE([poison-system-directories], ++ AS_HELP_STRING([--enable-poison-system-directories], ++ [warn for use of native system header directories]),, ++ [enable_poison_system_directories=no]) ++if test "x${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 af0e5933fdb..b6731a4673c 100644 +--- a/gcc/doc/invoke.texi ++++ b/gcc/doc/invoke.texi +@@ -384,6 +384,7 @@ Objective-C and Objective-C++ Dialects}. + -Wpacked -Wno-packed-bitfield-compat -Wpacked-not-aligned -Wpadded + -Wparentheses -Wno-pedantic-ms-format + -Wpointer-arith -Wno-pointer-compare -Wno-pointer-to-int-cast ++-Wno-poison-system-directories + -Wno-pragmas -Wno-prio-ctor-dtor -Wredundant-decls + -Wrestrict -Wno-return-local-addr -Wreturn-type + -Wno-scalar-storage-order -Wsequence-point +@@ -8426,6 +8427,14 @@ 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. + ++@opindex Wno-poison-system-directories ++@item -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. ++ + @opindex Wfloat-equal + @opindex Wno-float-equal + @item -Wfloat-equal +diff --git a/gcc/gcc.cc b/gcc/gcc.cc +index 16bb07f2cdc..33b56e721d2 100644 +--- a/gcc/gcc.cc ++++ b/gcc/gcc.cc +@@ -1146,6 +1146,8 @@ 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:%{!r:%{!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 "" \ + %{fopenacc|fopenmp|%:gt(%{ftree-parallelize-loops=*:%*} 1):\ +diff --git a/gcc/incpath.cc b/gcc/incpath.cc +index 4d44321183f..0f3f071b44c 100644 +--- a/gcc/incpath.cc ++++ b/gcc/incpath.cc +@@ -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. */ +@@ -399,6 +400,26 @@ 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 +-- +2.41.0 + |