buildroot/package/gcc/6.4.0/0004-gcc-xtensa-don-t-force-PIC-for-uclinux-target.patch

From 960a2552f7b418134cdf7a31e96023a3811b98dd Mon Sep 17 00:00:00 2001
From: Max Filippov <jcmvbkbc@gmail.com>
Date: Sun, 4 Nov 2018 23:55:59 -0800
Subject: [PATCH] gcc: xtensa: don't force PIC for uclinux target

xtensa-uclinux uses bFLT executable file format that cannot relocate
fields representing offsets from data to code. C++ objects built as PIC
use offsets to encode FDE structures. As a result C++ exception handling
doesn't work correctly on xtensa-uclinux. Don't use PIC by default on
xtensa-uclinux.

gcc/
2018-11-05  Max Filippov  <jcmvbkbc@gmail.com>

	* config/xtensa/uclinux.h (XTENSA_ALWAYS_PIC): Change to 0.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
Backported from: r265823

 gcc/config/xtensa/uclinux.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/config/xtensa/uclinux.h b/gcc/config/xtensa/uclinux.h
index ba26187c8f7a..c7743df9d97c 100644
--- a/gcc/config/xtensa/uclinux.h
+++ b/gcc/config/xtensa/uclinux.h
@@ -59,8 +59,8 @@ along with GCC; see the file COPYING3.  If not see
 #undef LOCAL_LABEL_PREFIX
 #define LOCAL_LABEL_PREFIX	"."
 
-/* Always enable "-fpic" for Xtensa Linux.  */
-#define XTENSA_ALWAYS_PIC 1
+/* Don't enable "-fpic" for Xtensa uclinux.  */
+#define XTENSA_ALWAYS_PIC 0
 
 #undef TARGET_LIBC_HAS_FUNCTION
 #define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function
-- 
2.11.0