poky/meta/recipes-devtools/gcc/gcc-7.3/0018-cpp-honor-sysroot.patch

From 1c8a332469ca4bfefb10df70720e0dc83ff9a756 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Fri, 29 Mar 2013 09:22:00 +0400
Subject: [PATCH 18/47] cpp: honor sysroot.

Currently, if the gcc toolchain is relocated and installed from sstate, then you try and compile
preprocessed source (.i or .ii files), the compiler will try and access the builtin sysroot location
rather than the --sysroot option specified on the commandline. If access to that directory is
permission denied (unreadable), gcc will error.

This happens when ccache is in use due to the fact it uses preprocessed source files.

The fix below adds %I to the cpp-output spec macro so the default substitutions for -iprefix,
-isystem, -isysroot happen and the correct sysroot is used.

[YOCTO #2074]

RP 2012/04/13

Signed-off-by: Khem Raj <raj.khem@gmail.com>

Upstream-Status: Pending
---
 gcc/cp/lang-specs.h | 2 +-
 gcc/gcc.c           | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/cp/lang-specs.h b/gcc/cp/lang-specs.h
index 6b383e1d86d..c7c7d6a56ec 100644
--- a/gcc/cp/lang-specs.h
+++ b/gcc/cp/lang-specs.h
@@ -64,5 +64,5 @@ along with GCC; see the file COPYING3.  If not see
   {".ii", "@c++-cpp-output", 0, 0, 0},
   {"@c++-cpp-output",
    "%{!M:%{!MM:%{!E:\
-    cc1plus -fpreprocessed %i %(cc1_options) %2\
+    cc1plus -fpreprocessed %i %I %(cc1_options) %2\
     %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
diff --git a/gcc/gcc.c b/gcc/gcc.c
index 05896e19926..c73d4023987 100644
--- a/gcc/gcc.c
+++ b/gcc/gcc.c
@@ -1351,7 +1351,7 @@ static const struct compiler default_compilers[] =
 					   %W{o*:--output-pch=%*}}%V}}}}}}}", 0, 0, 0},
   {".i", "@cpp-output", 0, 0, 0},
   {"@cpp-output",
-   "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
+   "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %I %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 0},
   {".s", "@assembler", 0, 0, 0},
   {"@assembler",
    "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 0, 0},
-- 
2.12.2