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gcc: update to version 7.4.0, Add config options

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for coping libc.a, libpthread.a and libstdc++ to target.
Add config option to eliminate need for -lstdc++ and -lgcc_pic
switches when linking statically

Signed-off-by: Noble Pepper <noblepepper@gmail.com>
This commit is contained in:
Noble Pepper
2019-06-25 08:18:06 -05:00
committed by Rosen Penev
parent 1bb888f054
commit 5caa181b17
46 changed files with 644 additions and 1373 deletions
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23
devel/gcc/patches/800-arm_v5te_no_ldrd_strd.patch
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@@ -1,6 +1,27 @@
commit b050f87d13b5dc7ed82feb9a90f4529de58bdf25
Author: Felix Fietkau <nbd@openwrt.org>
Date: Wed Feb 19 19:20:10 2014 +0000
gcc: prevent the use of LDRD/STRD on ARMv5TE
These instructions are for 64-bit load/store. On ARMv5TE, the CPU
requires addresses to be aligned to 64-bit. When misaligned, behavior is
undefined (effectively either loads the same word twice on LDRD, or
corrupts surrounding memory on STRD).
On ARMv6 and newer, unaligned access is safe.
Removing these instructions for ARMv5TE is necessary, because GCC
ignores alignment information in pointers and does unsafe optimizations
that have shown up as bugs in various places.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 39638
--- a/gcc/config/arm/arm.h
+++ b/gcc/config/arm/arm.h
@@ -285,7 +285,7 @@ extern void (*arm_lang_output_object_att
@@ -150,7 +150,7 @@ extern tree arm_fp16_type_node;
/* Thumb-1 only. */
#define TARGET_THUMB1_ONLY (TARGET_THUMB1 && !arm_arch_notm)