From ca961096fca7a549f50097c37a0ea0e992be1225 Mon Sep 17 00:00:00 2001
From: Howard Chen <howardsoc@google.com>
Date: Mon, 8 Nov 2021 10:35:14 +0800
Subject: [PATCH] Deprecate prebuilts/misc/linux-x86/lz4/lz4

Replace prebuilts/misc/linux-x86/lz4/lz4 with external/lz4.

Test: \
  development/gsi/build_with_kernel/fetch_kernel.sh \
  development/gsi/build_with_kernel/repack_kernels.sh
Bug: 205492988

Change-Id: Ic22e6ea7cc68b45761b963ea3c41fd099ea29bc9
---
 gsi/build_with_kernel/repack_kernels.sh        |  2 ++
 gsi/build_with_kernel/repack_kernels_common.sh | 11 ++++++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/gsi/build_with_kernel/repack_kernels.sh b/gsi/build_with_kernel/repack_kernels.sh
index adcfcac88..4d28ea749 100755
--- a/gsi/build_with_kernel/repack_kernels.sh
+++ b/gsi/build_with_kernel/repack_kernels.sh
@@ -18,6 +18,8 @@ source development/gsi/build_with_kernel/repack_kernels_common.sh
 
 set -e
 
+prepare_lz4
+
 prepare_kernel_image \
   "artifacts/common-android13-5_10-kernel_aarch64" \
   "5.10" \
diff --git a/gsi/build_with_kernel/repack_kernels_common.sh b/gsi/build_with_kernel/repack_kernels_common.sh
index c18e4b345..ebed4715c 100755
--- a/gsi/build_with_kernel/repack_kernels_common.sh
+++ b/gsi/build_with_kernel/repack_kernels_common.sh
@@ -29,8 +29,17 @@ if [[ -z "${DIST_DIR}" ]]; then
 fi
 
 GZIP="gzip"
-LZ4="${WD}/prebuilts/misc/linux-x86/lz4/lz4"
+LZ4="${OUT_DIR}/host/linux-x86/bin/lz4"
 
+function prepare_lz4()
+{
+  if ! [ -f ${LZ4} ]; then
+    echo "make $LZ4"
+    cd ${WD}
+    make lz4
+    cd -
+  fi
+}
 
 function prepare_kernel_image()
 {