From 40e70e6822ec41b5f92e0c69165d75a48c8a8da4 Mon Sep 17 00:00:00 2001
From: QP Hou <dave2008713@gmail.com>
Date: Wed, 24 Nov 2021 19:30:20 -0800
Subject: [PATCH] extract_tools.sh: detect LFS installation + fix pull
 detection (#19)

* fix extract_tools.sh for fresh clone

* two spaces

Co-authored-by: Adeeb Shihadeh <adeebshihadeh@gmail.com>
---
 tools/extract_tools.sh | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

diff --git a/tools/extract_tools.sh b/tools/extract_tools.sh
index b922797..edfc28c 100755
--- a/tools/extract_tools.sh
+++ b/tools/extract_tools.sh
@@ -2,6 +2,11 @@
 
 echo "Extracting tools..."
 
+git lfs &> /dev/null || {
+  echo "ERROR: git lfs not installed"
+  exit 1
+}
+
 DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >/dev/null && pwd)"
 THIS_SCRIPT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/$(basename "${BASH_SOURCE[0]}")"
 ROOT=$DIR/..
@@ -13,15 +18,14 @@ GOOGLE_GCC_4_9=aarch64-linux-android-4.9
 EDK2_LLVM=llvm-arm-toolchain-ship
 SEC_IMAGE=SecImage
 
-if [ ! -f $LINARO_GCC*.gz ] || \
-   [ ! -f $GOOGLE_GCC_4_9*.gz ] || \
-   [ ! -f $EDK2_LLVM*.gz ] || \
-   [ ! -f $SEC_IMAGE*.gz ]; then
+# grep for `-`, which stands for LFS pointer
+git lfs ls-files | awk '{print $2}' | grep "-" &>/dev/null && {
+  echo "Pulling git lfs objects..."
   cd $ROOT
   git lfs install
   git lfs pull
   cd $DIR
-fi
+}
 
 LINARO_GCC_TARBALL=$LINARO_GCC.tar.gz
 GOOGLE_GCC_4_9_TARBALL=$GOOGLE_GCC_4_9.tar.gz