ci: make get-binary-toolchain run per build

In a distributed, non-homogeneous CI setup, the binary-toolchain setup
script might not run on the machine that needs the toolchains.  Make
this per-build and it will always be there, at the expense of running on
builds that might not need it (though it still should be fast).

Also, there is an issue with the directory where the binary toolchain is
located being global, and racing against other systems using, setting up,
and tearing down.  Link this to a local directory to avoid any races.

Signed-off-by: Jon Mason <jon.mason@arm.com>

.gitlab-ci.yml

@@ -1,4 +1,5 @@
-image: ghcr.io/siemens/kas/kas
+# We need 2.6.3 as this is the latest container with an old enough distro
+image: ghcr.io/siemens/kas/kas:2.6.3
 
   # First do a common bootstrap, and then build all the targets
 stages:
@@ -18,12 +19,15 @@ stages:
     BB_LOGCONFIG: $CI_PROJECT_DIR/ci/logging.yml
     TOOLCHAIN_DIR: $CI_BUILDS_DIR/persist/toolchains
     IMAGE_DIR: $CI_PROJECT_DIR/work/build/tmp/deploy/images
+    TOOLCHAIN_LINK_DIR: $CI_PROJECT_DIR/work/build/toolchains
   before_script:
     - echo KAS_WORK_DIR = $KAS_WORK_DIR
     - echo SSTATE_DIR = $SSTATE_DIR
     - echo DL_DIR = $DL_DIR
     - rm -rf $KAS_WORK_DIR
-    - mkdir --verbose --parents $KAS_WORK_DIR $KAS_REPO_REF_DIR $SSTATE_DIR $DL_DIR $TOOLCHAIN_DIR
+    - mkdir --verbose --parents $KAS_WORK_DIR $KAS_REPO_REF_DIR $SSTATE_DIR $DL_DIR $TOOLCHAIN_DIR $TOOLCHAIN_LINK_DIR
+    # Must do this here, as it's the only way to make sure the toolchain is installed on the same builder
+    - ./ci/get-binary-toolchains $DL_DIR $TOOLCHAIN_DIR $TOOLCHAIN_LINK_DIR
 
 # Generalised fragment to do a Kas build
 .build:
@@ -43,13 +47,6 @@ update-repos:
   script:
   - flock --verbose --timeout 60 $KAS_REPO_REF_DIR ./ci/update-repos
 
-get-binary-toolchains:
-  extends: .setup
-  stage: prep
-  script:
-    - ./ci/get-binary-toolchains $DL_DIR $TOOLCHAIN_DIR
-
-
 #
 # Bootstrap stage, bootstrap and machine coverage
 #

ci/external-gccarm.yml

@@ -5,4 +5,4 @@ local_conf_header:
   cc: |
     PNBLACKLIST[gcc-cross-arm] = "Using external toolchain"
     TCMODE = "external-arm"
-    EXTERNAL_TOOLCHAIN = "${TOOLCHAIN_DIR}/${TARGET_ARCH}"
+    EXTERNAL_TOOLCHAIN = "${TOPDIR}/toolchains/${TARGET_ARCH}"

ci/get-binary-toolchains

@@ -6,9 +6,10 @@ VER="10.2-2020.11"
 
 DOWNLOAD_DIR=$1
 TOOLCHAIN_DIR=$2
+TOOLCHAIN_LINK_DIR=$3
 
-# These should be already created by .bitlab-ci.yml, but do here if run outside of that env
-mkdir -p $DOWNLOAD_DIR $TOOLCHAIN_DIR
+# These should be already created by .gitlab-ci.yml, but do here if run outside of that env
+mkdir -p $DOWNLOAD_DIR $TOOLCHAIN_DIR $TOOLCHAIN_LINK_DIR
 
 if [ $HOST_ARCH = "aarch64" ]; then
 	#AArch64 Linux hosted cross compilers
@@ -32,21 +33,14 @@ else
 fi
 
 for i in arm aarch64 aarch64_be; do
-	if [ ! -f $DOWNLOAD_DIR/gcc-arm-$VER-$HOST_ARCH-$i-none-linux-gnu*.tar.xz ]; then
-		continue
-	fi
-
-	if [ -d $TOOLCHAIN_DIR/$i ]; then
-		echo "$TOOLCHAIN_DIR/$i EXISTS!"
-		MANIFEST=$(ls $TOOLCHAIN_DIR/$i | grep txt)
-		if [[ $MANIFEST != $VER-$HOST_ARCH-$i-none-linux-gnu*.txt ]]; then
-			echo "Removing old $MANIFEST for $VER-$HOST_ARCH-$i-*.txt toolchain"
-			rm -rf $TOOLCHAIN_DIR/$i
+	if [ ! -d $TOOLCHAIN_DIR/gcc-arm-$VER-$HOST_ARCH-$i-none-linux-gnu*/ ]; then
+		if [ ! -f $DOWNLOAD_DIR/gcc-arm-$VER-$HOST_ARCH-$i-none-linux-gnu*.tar.xz ]; then
+			continue
 		fi
+
+		tar -C $TOOLCHAIN_DIR -axvf $DOWNLOAD_DIR/gcc-arm-$VER-$HOST_ARCH-$i-none-linux-gnu*.tar.xz
 	fi
 
-	if [ ! -d $TOOLCHAIN_DIR/$i ]; then
-		tar -C $TOOLCHAIN_DIR -axvf $DOWNLOAD_DIR/gcc-arm-$VER-$HOST_ARCH-$i-none-linux-gnu*.tar.xz
-		mv $TOOLCHAIN_DIR/gcc-arm-$VER-$HOST_ARCH-$i-none-linux-gnu*/ $TOOLCHAIN_DIR/$i
-	fi
+	# Setup a link for the toolchain to use local to the building machine (e.g., not in a shared location)
+	ln -s $TOOLCHAIN_DIR/gcc-arm-$VER-$HOST_ARCH-$i-none-linux-gnu* $TOOLCHAIN_LINK_DIR/$i
 done

meta-arm-bsp/recipes-kernel/linux/files/0001-scripts-dtc-Remove-redundant-YYLOC-global-declaratio.patch

@@ -0,0 +1,54 @@
+Upstream-Status: Backport
+Signed-off-by: Jon Mason <jon.mason@arm.com>
+
+From e33a814e772cdc36436c8c188d8c42d019fda639 Mon Sep 17 00:00:00 2001
+From: Dirk Mueller <dmueller@suse.com>
+Date: Tue, 14 Jan 2020 18:53:41 +0100
+Subject: [PATCH] scripts/dtc: Remove redundant YYLOC global declaration
+
+gcc 10 will default to -fno-common, which causes this error at link
+time:
+
+  (.text+0x0): multiple definition of `yylloc'; dtc-lexer.lex.o (symbol from plugin):(.text+0x0): first defined here
+
+This is because both dtc-lexer as well as dtc-parser define the same
+global symbol yyloc. Before with -fcommon those were merged into one
+defintion. The proper solution would be to to mark this as "extern",
+however that leads to:
+
+  dtc-lexer.l:26:16: error: redundant redeclaration of 'yylloc' [-Werror=redundant-decls]
+   26 | extern YYLTYPE yylloc;
+      |                ^~~~~~
+In file included from dtc-lexer.l:24:
+dtc-parser.tab.h:127:16: note: previous declaration of 'yylloc' was here
+  127 | extern YYLTYPE yylloc;
+      |                ^~~~~~
+cc1: all warnings being treated as errors
+
+which means the declaration is completely redundant and can just be
+dropped.
+
+Signed-off-by: Dirk Mueller <dmueller@suse.com>
+Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
+[robh: cherry-pick from upstream]
+Cc: stable@vger.kernel.org
+Signed-off-by: Rob Herring <robh@kernel.org>
+---
+ scripts/dtc/dtc-lexer.l | 1 -
+ 1 file changed, 1 deletion(-)
+
+diff --git a/scripts/dtc/dtc-lexer.l b/scripts/dtc/dtc-lexer.l
+index 5c6c3fd557d7..b3b7270300de 100644
+--- a/scripts/dtc/dtc-lexer.l
++++ b/scripts/dtc/dtc-lexer.l
+@@ -23,7 +23,6 @@ LINECOMMENT	"//".*\n
+ #include "srcpos.h"
+ #include "dtc-parser.tab.h"
+ 
+-YYLTYPE yylloc;
+ extern bool treesource_error;
+ 
+ /* CAUTION: this will stop working if we ever use yyless() or yyunput() */
+-- 
+2.30.2
+

meta-arm-bsp/recipes-kernel/linux/linux-yocto_5.3.bb

@@ -6,7 +6,9 @@ SRCREV_machine = "d4f3318ed8fab6316cb7a269b8f42306632a3876"
 SRCREV_meta = "8d0ed83a864cc91eef4d2abbc90f13d4ecd1c213"
 
 SRC_URI = "git://git.yoctoproject.org/linux-yocto.git;name=machine;branch=${KBRANCH}; \
-           git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-5.4;destsuffix=${KMETA}"
+           git://git.yoctoproject.org/yocto-kernel-cache;type=kmeta;name=meta;branch=yocto-5.4;destsuffix=${KMETA} \
+           file://0001-scripts-dtc-Remove-redundant-YYLOC-global-declaratio.patch \
+          "
 
 LINUX_VERSION = "5.3.18"
 LIC_FILES_CHKSUM = "file://COPYING;md5=bbea815ee2795b2f4230826c0c6b8814"