1 files changed, 42 insertions, 0 deletions
diff --git a/compiler_wrapper/reset_compiler_wrapper.sh b/compiler_wrapper/reset_compiler_wrapper.sh
new file mode 100755
index 00000000..523e972d
--- /dev/null
+++ b/compiler_wrapper/reset_compiler_wrapper.sh
@@ -0,0 +1,42 @@
+#!/bin/bash -eux
+#
+# Copyright 2021 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# If your compiler wrapper ends up broken, you can run this script to try to
+# restore it to a working version. We can only use artifacts we download from
+# gs://, since it's kind of hard to build a working compiler with a broken
+# compiler wrapper. ;)
+
+if [[ ! -e "/etc/cros_chroot_version" ]]; then
+  echo "Run me inside of the chroot."
+  exit 1
+fi
+
+packages_to_reemerge=(
+  # We want to reemerge the host wrapper...
+  sys-devel/llvm
+)
+
+gcc_wrappers=(
+  cross-x86_64-cros-linux-gnu/gcc
+  cross-armv7a-cros-linux-gnueabihf/gcc
+  cross-aarch64-cros-linux-gnu/gcc
+)
+
+# ...and any existing target wrappers.
+for gcc in "${gcc_wrappers[@]}"; do
+  # cheap check for whether or not the package in question is already installed
+  if ls /var/db/pkg/"${gcc}"-* >& /dev/null; then
+    packages_to_reemerge+=( "${gcc}" )
+  fi
+done
+
+# Ensure that we don't pick up any broken binpkgs for these when we install
+# them below.
+for pkg in "${packages_to_reemerge[@]}"; do
+  sudo rm -f "/var/lib/portage/pkgs/${pkg}"*
+done
+
+sudo emerge -j16 -G "${packages_to_reemerge[@]}"