[PATCH 2/3] gcc-cross: pass -Werror=poison-system-directories to compiler stages

[Ross Burton <ross.burton@arm.com>]

The -Werror=poison-system-directories argument was being passed to runs
where _just_ CPP was being invoked, so it wasn't passed to runs which
also compile.  Add the options to cc1_options so that compile runs also
have fatal poisoning errors.

Signed-off-by: Ross Burton <ross.burton@arm.com>
---
 .../gcc/0002-gcc-poison-system-directories.patch    | 13 +++++++++++++
 1 file changed, 13 insertions(+)

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
index 5a51ae7d960..bfec4477c1e 100644
--- a/meta/recipes-devtools/gcc/gcc/0002-gcc-poison-system-directories.patch
+++ b/meta/recipes-devtools/gcc/gcc/0002-gcc-poison-system-directories.patch
@@ -185,6 +185,19 @@ index bb07cc244e3..ce161d3c853 100644
  
  /* Pass -d* flags, possibly modifying -dumpdir, -dumpbase et al.
  
+@@ -1265,7 +1270,11 @@ static const char *cc1_options =
+  %{coverage:-fprofile-arcs -ftest-coverage}\
+  %{fprofile-arcs|fprofile-generate*|coverage:\
+    %{!fprofile-update=single:\
+-     %{pthread:-fprofile-update=prefer-atomic}}}";
++     %{pthread:-fprofile-update=prefer-atomic}}}"
++#ifdef POISON_BY_DEFAULT
++ " -Werror=poison-system-directories"
++#endif
++  ;
+
+ static const char *asm_options =
+ "%{-target-help:%:print-asm-header()} "
 diff --git a/gcc/incpath.cc b/gcc/incpath.cc
 index bd2a97938eb..c80f100f476 100644
 --- a/gcc/incpath.cc
-- 
2.34.1