diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc/0002-gcc-poison-system-directories.patch')
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc/0002-gcc-poison-system-directories.patch | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/meta/recipes-devtools/gcc/gcc/0002-gcc-poison-system-directories.patch b/meta/recipes-devtools/gcc/gcc/0002-gcc-poison-system-directories.patch new file mode 100644 index 0000000000..18a9fb8701 --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc/0002-gcc-poison-system-directories.patch @@ -0,0 +1,226 @@ +From 118c6f054711d437167ff125a88c9236bfc8099c Mon Sep 17 00:00:00 2001 +From: Khem Raj <raj.khem@gmail.com> +Date: Mon, 8 Mar 2021 16:04:20 -0800 +Subject: [PATCH] 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". + +Upstream-Status: Pending +Signed-off-by: Mark Hatle <mark.hatle@windriver.com> +Signed-off-by: Khem Raj <raj.khem@gmail.com> +--- + gcc/common.opt | 4 ++++ + gcc/config.in | 10 ++++++++++ + gcc/configure | 19 +++++++++++++++++++ + gcc/configure.ac | 16 ++++++++++++++++ + gcc/doc/invoke.texi | 9 +++++++++ + gcc/gcc.c | 9 +++++++-- + gcc/incpath.c | 21 +++++++++++++++++++++ + 7 files changed, 86 insertions(+), 2 deletions(-) + +diff --git a/gcc/common.opt b/gcc/common.opt +index c75dd36843e..49acbd6ed44 100644 +--- a/gcc/common.opt ++++ b/gcc/common.opt +@@ -683,6 +683,10 @@ 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 10a13cde586..8848284da41 100644 +--- a/gcc/config.in ++++ b/gcc/config.in +@@ -218,6 +218,16 @@ + #endif + + ++/* Define to warn for use of native system header directories */ ++#ifndef USED_FOR_TARGET ++#undef ENABLE_POISON_SYSTEM_DIRECTORIES ++#endif ++/* Define to warn for use of native system header directories */ ++#ifndef USED_FOR_TARGET ++#undef POISON_BY_DEFAULT ++#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 9bb436ce7bd..3f0734bff11 100755 +--- a/gcc/configure ++++ b/gcc/configure +@@ -1020,6 +1020,7 @@ 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 +@@ -1782,6 +1783,8 @@ 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 +@@ -31325,6 +31328,22 @@ 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}" != "xno"; then ++ ++$as_echo "#define ENABLE_POISON_SYSTEM_DIRECTORIES 1" >>confdefs.h ++if test "$enable_poison_system_directories" = "error"; then ++$as_echo "#define POISON_BY_DEFAULT 1" >>confdefs.h ++fi ++ ++fi ++ + # Substitute configuration variables + + +diff --git a/gcc/configure.ac b/gcc/configure.ac +index caa611933df..54e21764b3e 100644 +--- a/gcc/configure.ac ++++ b/gcc/configure.ac +@@ -7123,6 +7123,22 @@ 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 (no/yes/error)]),, ++ [enable_poison_system_directories=no]) ++AC_MSG_NOTICE([poisoned directories $enable_poison_system_directories]) ++if test "x${enable_poison_system_directories}" != "xno"; then ++ AC_MSG_NOTICE([poisoned directories enabled]) ++ AC_DEFINE([ENABLE_POISON_SYSTEM_DIRECTORIES], ++ [1], ++ [Define to warn for use of native system header directories]) ++ if test $enable_poison_system_directories = "error"; then ++ AC_MSG_NOTICE([poisoned directories are fatal]) ++ AC_DEFINE([POISON_BY_DEFAULT], [1], [Define to make poison warnings errors]) ++ fi ++fi ++ + # Substitute configuration variables + AC_SUBST(subdirs) + AC_SUBST(srcdir) +diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi +index 7a368959e5e..6659a903bf0 100644 +--- a/gcc/doc/invoke.texi ++++ b/gcc/doc/invoke.texi +@@ -369,6 +369,7 @@ Objective-C and Objective-C++ Dialects}. + -Wpacked -Wno-packed-bitfield-compat -Wpacked-not-aligned -Wpadded @gol + -Wparentheses -Wno-pedantic-ms-format @gol + -Wpointer-arith -Wno-pointer-compare -Wno-pointer-to-int-cast @gol ++-Wno-poison-system-directories @gol + -Wno-pragmas -Wno-prio-ctor-dtor -Wredundant-decls @gol + -Wrestrict -Wno-return-local-addr -Wreturn-type @gol + -Wno-scalar-storage-order -Wsequence-point @gol +@@ -7735,6 +7736,14 @@ 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 7837553958b..19c75b6e20d 100644 +--- a/gcc/gcc.c ++++ b/gcc/gcc.c +@@ -1152,6 +1152,8 @@ 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):\ +@@ -1247,8 +1249,11 @@ static const char *cpp_unique_options = + static const char *cpp_options = + "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\ + %{f*} %{g*:%{%:debug-level-gt(0):%{g*}\ +- %{!fno-working-directory:-fworking-directory}}} %{O*}\ +- %{undef} %{save-temps*:-fpch-preprocess}"; ++ %{!fno-working-directory:-fworking-directory}}} %{O*}" ++#ifdef POISON_BY_DEFAULT ++ " -Werror=poison-system-directories" ++#endif ++ " %{undef} %{save-temps*:-fpch-preprocess}"; + + /* Pass -d* flags, possibly modifying -dumpdir, -dumpbase et al. + +diff --git a/gcc/incpath.c b/gcc/incpath.c +index 446d280321d..fbfc0ce03b8 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. */ +@@ -395,6 +396,26 @@ 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 |