From 82af0f40a4933c701b7d7993477b35035889905e Mon Sep 17 00:00:00 2001
From: Asish Kumar <officialasishkumar@gmail.com>
Date: Thu, 9 Apr 2026 18:53:20 +0000
Subject: [PATCH] [GLUTEN-11885][VL] Respect custom VELOX_HOME in build info
 generation

---
 dev/builddeps-veloxbe.sh |  9 ++++++---
 dev/gluten-build-info.sh | 42 ++++++++++++++++++++++++++++++++++++----
 2 files changed, 44 insertions(+), 7 deletions(-)

diff --git a/dev/builddeps-veloxbe.sh b/dev/builddeps-veloxbe.sh
index 7018df478cf1..6ce2c6d08315 100755
--- a/dev/builddeps-veloxbe.sh
+++ b/dev/builddeps-veloxbe.sh
@@ -120,15 +120,15 @@ do
         shift # Remove argument name from processing
         ;;
         --velox_repo=*)
-        VELOX_REPO=("${arg#*=}")
+        VELOX_REPO="${arg#*=}"
         shift # Remove argument name from processing
         ;;
         --velox_branch=*)
-        VELOX_BRANCH=("${arg#*=}")
+        VELOX_BRANCH="${arg#*=}"
         shift # Remove argument name from processing
         ;;
         --velox_home=*)
-        VELOX_HOME=("${arg#*=}")
+        VELOX_HOME="${arg#*=}"
         shift # Remove argument name from processing
         ;;
         --build_velox_tests=*)
@@ -208,6 +208,9 @@ fi
 
 concat_velox_param
 
+# Keep VELOX_HOME visible to child processes such as Maven's build-info generation step.
+export VELOX_HOME
+
 function build_arrow {
   if [ ! -d "$VELOX_HOME" ]; then
     get_velox
diff --git a/dev/gluten-build-info.sh b/dev/gluten-build-info.sh
index 61d7693f9e61..c22b100898e1 100755
--- a/dev/gluten-build-info.sh
+++ b/dev/gluten-build-info.sh
@@ -21,6 +21,7 @@ GLUTEN_ROOT=$(cd $(dirname -- $0)/..; pwd -P)
 
 EXTRA_RESOURCE_DIR=$GLUTEN_ROOT/gluten-core/target/generated-resources
 BUILD_INFO="$EXTRA_RESOURCE_DIR"/gluten-build-info.properties
+BACKEND_HOME=""
 
 # Delete old build-info file before regenerating
 rm -f "$BUILD_INFO"
@@ -38,9 +39,9 @@ function echo_revision_info() {
 function echo_velox_revision_info() {
   BACKEND_HOME=$1
   echo gcc_version=$(strings $GLUTEN_ROOT/cpp/build/releases/libgluten.so | grep "GCC:" | head -n 1)
-  echo velox_branch=$(git -C $BACKEND_HOME rev-parse --abbrev-ref HEAD)
-  echo velox_revision=$(git -C $BACKEND_HOME rev-parse HEAD)
-  echo velox_revision_time=$(git -C $BACKEND_HOME show -s --format=%ci HEAD)
+  echo velox_branch=$(git -C "$BACKEND_HOME" rev-parse --abbrev-ref HEAD)
+  echo velox_revision=$(git -C "$BACKEND_HOME" rev-parse HEAD)
+  echo velox_revision_time=$(git -C "$BACKEND_HOME" show -s --format=%ci HEAD)
 }
 
 function echo_clickhouse_revision_info() {
@@ -49,6 +50,34 @@ function echo_clickhouse_revision_info() {
   echo ch_commit=$(cat $GLUTEN_ROOT/cpp-ch/clickhouse.version | grep -oP '(?<=^CH_COMMIT=).*')
 }
 
+function read_cmake_cache_path() {
+  CACHE_FILE="$GLUTEN_ROOT/cpp/build/CMakeCache.txt"
+  CACHE_KEY="$1"
+  if [ -f "$CACHE_FILE" ]; then
+    grep "^${CACHE_KEY}:PATH=" "$CACHE_FILE" | cut -d= -f2- | head -n 1
+  fi
+}
+
+function resolve_velox_home() {
+  if [ -n "$BACKEND_HOME" ]; then
+    echo "$BACKEND_HOME"
+    return
+  fi
+
+  if [ -n "${VELOX_HOME:-}" ]; then
+    echo "$VELOX_HOME"
+    return
+  fi
+
+  CACHED_VELOX_HOME=$(read_cmake_cache_path VELOX_HOME)
+  if [ -n "$CACHED_VELOX_HOME" ]; then
+    echo "$CACHED_VELOX_HOME"
+    return
+  fi
+
+  echo "$GLUTEN_ROOT/ep/build-velox/build/velox_ep"
+}
+
 while (( "$#" )); do
   echo "$1"
   case $1 in
@@ -60,12 +89,17 @@ while (( "$#" )); do
       echo backend_type="$BACKEND_TYPE" >> "$BUILD_INFO"
       # Compute backend home path based on type
       if [ "velox" = "$BACKEND_TYPE" ]; then
-        BACKEND_HOME="$GLUTEN_ROOT/ep/build-velox/build/velox_ep"
+        BACKEND_HOME=$(resolve_velox_home)
         echo_velox_revision_info "$BACKEND_HOME" >> "$BUILD_INFO"
       elif [ "ch" = "$BACKEND_TYPE" ] || [ "clickhouse" = "$BACKEND_TYPE" ]; then
         echo_clickhouse_revision_info >> "$BUILD_INFO"
       fi
       ;;
+    --backend_home|--velox_home)
+      if [ -n "$2" ]; then
+        BACKEND_HOME="$2"
+      fi
+      ;;
     --java)
       echo java_version="$2" >> "$BUILD_INFO"
       ;;