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gcc: add an option for --enable-poison-system-directories to be fatal

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Extend --enable-poison-system-directories so that it can be an error
instead of a warning by default.

(From OE-Core rev: 1fcaa5f452b2c6b93a6f3dfd57f894cbef5e3379)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Ross Burton
2021-03-08 18:01:50 +00:00
committed by Richard Purdie
parent 81adf49416
commit 036dd67bf6
1 changed files with 53 additions and 3 deletions
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56
meta/recipes-devtools/gcc/gcc/0002-gcc-poison-system-directories.patch
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@@ -44,7 +44,7 @@ diff --git a/gcc/config.in b/gcc/config.in
index 809e7b26823..5adeaeed36b 100644
--- a/gcc/config.in
+++ b/gcc/config.in
@@ -224,6 +224,12 @@
@@ -224,6 +224,16 @@
#endif
@@ -52,6 +52,10 @@ index 809e7b26823..5adeaeed36b 100644
+#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
@@ -78,7 +82,7 @@ index cd3d9516fce..8de766a942c 100755
--enable-plugin enable plugin support
--enable-host-shared build host code as shared libraries
--disable-libquadmath-support
@@ -30235,6 +30238,19 @@ if test "${enable_version_specific_runtime_libs+set}" = set; then :
@@ -30235,6 +30238,22 @@ if test "${enable_version_specific_runtime_libs+set}" = set; then :
fi
@@ -89,9 +93,12 @@ index cd3d9516fce..8de766a942c 100755
+ enable_poison_system_directories=no
+fi
+
+if test "x${enable_poison_system_directories}" = "xyes"; then
+if test "x${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
+
@@ -198,3 +205,46 @@ index 8a2bda00f80..9098ab044ab 100644
}
/* Use given -I paths for #include "..." but not #include <...>, and
diff --git a/gcc/configure.ac b/gcc/configure.ac
index f42006e5476..de7e176ea53 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -6602,12 +6602,18 @@ AC_ARG_ENABLE(version-specific-runtime-libs,
AC_ARG_ENABLE([poison-system-directories],
AS_HELP_STRING([--enable-poison-system-directories],
- [warn for use of native system header 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}" = "xyes"; then
+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
diff --git a/gcc/gcc.c b/gcc/gcc.c
index b2200c5185a..fa7b6fc8ddb 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -1136,8 +1136,11 @@ 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}";
/* This contains cpp options which are not passed when the preprocessor
output will be used by another program. */