commit c16b0ecd2da0e97f8329b7f3d95991ccda8b2e7c
author Olivier Deprez <olivier.deprez@arm.com> Thu Sep 23 11:39:39 2021 +0200
committer Olivier Deprez <olivier.deprez@arm.com> Tue Oct 26 16:56:55 2021 +0100
tree 0c898dfaf46b87b6842df25261f3a153a3583a92
parent 4e333c5942ece68308dfcaf605dba932ab55132d

Upgrade linux to v5.4.148

Update prebuilts and third_party/linux project hashes.

This change improves the project build scalability by removing the
dependency to the GNU toolchain. It was only required for building
the kernel module within the test framework.
Switched to fully building with LLVM.

Change-Id: I40a72556ab8edfb384316f62156a70fa6ea0114e
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>

build/linux/linux.gni

diff --git a/build/linux/linux.gni b/build/linux/linux.gni
index 65cc9df..45860fa 100644
--- a/build/linux/linux.gni
+++ b/build/linux/linux.gni
@@ -56,24 +56,16 @@
     rebase_path(kernel_dir),
 
     # TODO: Build with toolchain cc instead of a hardcoded one.
-    "CC=" + rebase_path("//prebuilts/linux-x64/clang/bin/clang"),
-    "LD=" +
-        rebase_path("//prebuilts/linux-x64/gcc/bin/aarch64-linux-android-ld"),
-    "AR=" +
-        rebase_path("//prebuilts/linux-x64/gcc/bin/aarch64-linux-android-ar"),
-    "NM=" + rebase_path("//prebuilts/linux-x64/clang/bin/llvm-nm"),
-    "OBJCOPY=" + rebase_path(
-            "//prebuilts/linux-x64/gcc/bin/aarch64-linux-android-objcopy"),
-    "OBJDUMP=" + rebase_path("//prebuilts/linux-x64/clang/bin/llvm-objdump"),
-    "STRIP=" + rebase_path("//prebuilts/linux-x64/clang/bin/llvm-strip"),
-    "GCC_TOOLCHAIN_DIR=" + rebase_path("//prebuilts/linux-x64/gcc/bin"),
     "ARCH=arm64",
+    "LLVM=1",
+    "LLVM_IAS=1",
     "CROSS_COMPILE=aarch64-linux-gnu-",
 
     # Build out-of-tree in `target_out_dir`.
     "O=" + rebase_path(target_out_dir),
 
-    # TODO: Remove/replace.
+    # TODO: assess if this setting is really required because the ninja
+    # top level invocation already cares about parallel build.
     "-j24",
   ]
 
@@ -155,18 +147,9 @@
       "KERNEL_PATH=" + rebase_path(invoker.kernel_dir),
       "O=" +
           rebase_path(get_label_info(invoker.kernel_target, "target_out_dir")),
-      "CC=" + rebase_path("//prebuilts/linux-x64/clang/bin/clang"),
-      "LD=" +
-          rebase_path("//prebuilts/linux-x64/gcc/bin/aarch64-linux-android-ld"),
-      "AR=" +
-          rebase_path("//prebuilts/linux-x64/gcc/bin/aarch64-linux-android-ar"),
-      "NM=" + rebase_path("//prebuilts/linux-x64/clang/bin/llvm-nm"),
-      "OBJCOPY=" + rebase_path(
-              "//prebuilts/linux-x64/gcc/bin/aarch64-linux-android-objcopy"),
-      "OBJDUMP=" + rebase_path("//prebuilts/linux-x64/clang/bin/llvm-objdump"),
-      "STRIP=" + rebase_path("//prebuilts/linux-x64/clang/bin/llvm-strip"),
-      "GCC_TOOLCHAIN_DIR=" + rebase_path("//prebuilts/linux-x64/gcc/bin"),
       "ARCH=arm64",
+      "LLVM=1",
+      "LLVM_IAS=1",
       "CROSS_COMPILE=aarch64-linux-gnu-",
     ]
     outputs = [