scripts: add a script to build a local alsa tools

This script builds a local installation of ALSA lib and associated
ALSA utilities that does not impact the system ALSA installation.

This will enable a later update to locally build topologies without
using the docker container.

Signed-off-by: Liam Girdwood <liam.r.girdwood@intel.com>

Author: lgirdwood

scripts/build-alsa-tools.sh

@@ -0,0 +1,127 @@
+#!/bin/bash
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright(c) 2025 Intel Corporation. All rights reserved.
+
+# fail immediately on any errors
+set -e
+
+# Array of ALSA Git repository URLs.  Add or remove repositories as needed.
+declare -a REPOS=(
+    "https://github.com/thesofproject/alsa-lib.git"
+    "https://github.com/thesofproject/alsa-utils.git"
+    # Add more repositories here...
+)
+
+# Commit ID to check for (optional). If specified, the script will update
+# the repository if this commit ID is not found.  Leave empty to skip.
+# This array order must align with REPO array above.
+declare -a COMMIT_ID=(
+    "df8f1cc1ec9d9ee15be5e2c23ad25b9389fd8766"
+    "09550cd393b1a7d307ee6f26637b1ed7bd275e38"
+    # Add more IDs here...
+)
+
+# Directory where repositories will be cloned/updated.
+if [[ -z "$SOF_WORKSPACE" ]]; then
+  # Environment variable is empty or unset so use default
+  BASE_DIR="$HOME/work/sof"
+else
+  # Environment variable exists and has a value
+  BASE_DIR="$SOF_WORKSPACE"
+fi
+
+# Arguments to pass to ./configure for each repository.  Add or remove
+declare -a CONFIGURE_ARGS=(
+    "--prefix=${BASE_DIR}/tools"
+    "--prefix=${BASE_DIR}/tools \
+        --with-alsa-prefix=${BASE_DIR}/tools \
+        --with-alsa-inc-prefix=${BASE_DIR}/tools/include \
+        --with-sysroot=${BASE_DIR}/tools \
+        --with-udev-rules-dir=${BASE_DIR}/tools \
+        PKG_CONFIG_PATH=${BASE_DIR}/tools \
+        LDFLAGS=-L${BASE_DIR}/tools/lib \
+        --with-asound-state-dir=${BASE_DIR}/tools/var/lib/alsa \
+        --with-systemdsystemunitdir=${BASE_DIR}/tools/lib/systemd/system"
+)
+
+# Arguments to pass to make for each repository.  Add or remove arguments as needed.
+declare -a TARGET_ARGS=(
+    "--disable-old-symbols"
+    "--enable-alsatopology"
+)
+
+# Function to check if a commit ID exists in a repository
+check_commit() {
+    local repo_dir="$1"
+    local commit_id="$2"
+
+    if [ -z "$commit_id" ]; then
+        return 0  # Skip check if no commit ID is provided
+    fi
+
+    if ! git -C "$repo_dir" rev-parse --quiet --verify "$commit_id" >/dev/null 2>&1; then
+        return 1  # Commit ID not found
+    else
+        return 0  # Commit ID found
+    fi
+}
+
+
+# Function to update the repository
+update_repo() {
+    local repo_dir="$1"
+    echo "Updating repository: $repo_dir"
+    git -C "$repo_dir" fetch --all
+    git -C "$repo_dir" pull
+}
+
+# Function to build and install the repository
+build_and_install() {
+    local repo_dir="$1"
+    local configure_args="$2"
+    local target_args="$3"
+
+    echo "Building and installing: $repo_dir $configure_args $target_args"
+
+    if [ ! -f "$repo_dir/gitcompile" ]; then
+          echo "Error: gitcompile not found in $repo_dir" >&2
+          exit 1
+    fi
+
+    # if Makefile exists then we can just run make
+    if [ ! -f "$repo_dir/Makefile" ]; then
+        (cd "$repo_dir" && ./gitcompile $configure_args $target_args) || \
+            { echo "configure failed in $repo_dir"; exit 1; }
+    else
+        (cd "$repo_dir" && make -j) || { echo "make failed in $repo_dir"; exit 1; }
+    fi
+
+    (cd "$repo_dir" && make install) || { echo "make install failed in $repo_dir"; exit 1; }
+
+    echo "Build and installation complete for $repo_dir"
+}
+
+# Main script logic
+mkdir -p "$BASE_DIR"
+
+for ((i = 0; i < ${#REPOS[@]}; i++)); do
+    echo "Counter: $i, Value: ${REPOS[i]}"
+    repo_url=${REPOS[i]}
+
+    repo_name=$(basename "$repo_url" .git)  # Extract repo name
+    repo_dir="$BASE_DIR/$repo_name"
+
+    if [ ! -d "$repo_dir" ]; then
+        echo "Cloning repository: $repo_url"
+        git clone "$repo_url" "$repo_dir" || { echo "git clone failed for $repo_url"; exit 1; }
+    elif ! check_commit "$repo_dir" "${COMMIT_ID[i]}"; then
+        update_repo "$repo_dir"
+    else
+        echo "Repository $repo_name is up to date."
+    fi
+
+    build_and_install "$repo_dir" "${CONFIGURE_ARGS[i]}"
+
+done
+
+echo "All repositories processed."