gcc: Use upstream GCC 7.2 for ARC

Message ID 20171109215648.15975-1-abrodkin@synopsys.com
State New
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Series
  • gcc: Use upstream GCC 7.2 for ARC
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Commit Message

Alexey Brodkin Nov. 9, 2017, 9:56 p.m.
It turned out with vanilla upstream GCC 7.2 stuff could be built
for ARC, what's more we may even build Linux kernel with rootfs
and get it all running perfectly fine so why not use that?

Essentially GCC from SNPS GitHub still has a lot of fixes and improvements
most of which will be a part of the next upstream release but let's see
how it goes and if we see vanilla GCC doesn't require way too many
back-ported patches we'll be able to get rid of SNPS GitHub here at all.

As of today the only really required back-port is the one for non-uClibc
libc.

Back-ported from upstream master with help of:
-------------------->8--------------------
git format-patch 927c0132251f -1 -- . ':!gcc/ChangeLog' ':!libgcc/ChangeLog'
-------------------->8--------------------

Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
---
 ...re-script-to-allow-non-uclibc-based-tripl.patch | 51 ++++++++++++++++++++++
 package/gcc/Config.in.host                         |  1 -
 package/gcc/gcc.mk                                 |  2 +-
 3 files changed, 52 insertions(+), 2 deletions(-)
 create mode 100644 package/gcc/7.2.0/0001-ARC-Configure-script-to-allow-non-uclibc-based-tripl.patch

Patch

diff --git a/package/gcc/7.2.0/0001-ARC-Configure-script-to-allow-non-uclibc-based-tripl.patch b/package/gcc/7.2.0/0001-ARC-Configure-script-to-allow-non-uclibc-based-tripl.patch
new file mode 100644
index 0000000..4f97c2f
--- /dev/null
+++ b/package/gcc/7.2.0/0001-ARC-Configure-script-to-allow-non-uclibc-based-tripl.patch
@@ -0,0 +1,51 @@ 
+From 927c0132251f1cd3452b96ebd75f1b06bc53e4ec Mon Sep 17 00:00:00 2001
+From: claziss <claziss@138bc75d-0d04-0410-961f-82ee72b054a4>
+Date: Mon, 10 Jul 2017 13:55:26 +0000
+Subject: [PATCH] [ARC] Configure script to allow non uclibc based triplets
+
+gcc/
+2017-07-10  Vineet Gupta <vgupta@synopsys.com>
+
+        * config.gcc: Remove uclibc from arc target spec.
+
+libgcc/
+2017-07-10  Vineet Gupta <vgupta@synopsys.com>
+
+        * config.host: Remove uclibc from arc target spec.
+
+git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@250097 138bc75d-0d04-0410-961f-82ee72b054a4
+Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
+---
+ gcc/config.gcc     | 2 +-
+ libgcc/config.host | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/gcc/config.gcc b/gcc/config.gcc
+index 1b47457..933a451 100644
+--- a/gcc/config.gcc
++++ b/gcc/config.gcc
+@@ -1044,7 +1044,7 @@ arc*-*-elf*)
+ 	big*)	tm_file="arc/big.h ${tm_file}"
+ 	esac
+ 	;;
+-arc*-*-linux-uclibc*)
++arc*-*-linux*)
+ 	tm_file="arc/arc-arch.h dbxelf.h elfos.h gnu-user.h linux.h linux-android.h glibc-stdint.h arc/linux.h ${tm_file}"
+ 	tmake_file="${tmake_file} arc/t-arc"
+ 	extra_gcc_objs="driver-arc.o"
+diff --git a/libgcc/config.host b/libgcc/config.host
+index 989ac71..a5ab453 100644
+--- a/libgcc/config.host
++++ b/libgcc/config.host
+@@ -383,7 +383,7 @@ arc*-*-elf*)
+ 	extra_parts="crti.o crtn.o crtend.o crtbegin.o crtendS.o crtbeginS.o"
+ 	extra_parts="$extra_parts crttls.o"
+ 	;;
+-arc*-*-linux-uclibc*)
++arc*-*-linux*)
+ 	tmake_file="${tmake_file} t-slibgcc-libgcc t-slibgcc-nolc-override arc/t-arc-uClibc arc/t-arc"
+ 	extra_parts="$extra_parts crti.o crtn.o"
+ 	extra_parts="$extra_parts crttls.o"
+-- 
+2.10.2
+
diff --git a/package/gcc/Config.in.host b/package/gcc/Config.in.host
index 1fb6b60..63b75cd 100644
--- a/package/gcc/Config.in.host
+++ b/package/gcc/Config.in.host
@@ -69,7 +69,6 @@  config BR2_GCC_VERSION_6_X
 config BR2_GCC_VERSION_7_X
 	bool "gcc 7.x"
 	# Broken or unsupported architectures
-	depends on !BR2_arc
 	depends on !BR2_or1k
 	select BR2_TOOLCHAIN_GCC_AT_LEAST_7
 
diff --git a/package/gcc/gcc.mk b/package/gcc/gcc.mk
index 6bdd6c8..0613092 100644
--- a/package/gcc/gcc.mk
+++ b/package/gcc/gcc.mk
@@ -10,7 +10,7 @@ 
 
 GCC_VERSION = $(call qstrip,$(BR2_GCC_VERSION))
 
-ifeq ($(BR2_arc),y)
+ifeq ($(BR2_GCC_VERSION_ARC),y)
 GCC_SITE = $(call github,foss-for-synopsys-dwc-arc-processors,gcc,$(GCC_VERSION))
 GCC_SOURCE = gcc-$(GCC_VERSION).tar.gz
 else ifeq ($(BR2_or1k),y)