From 91066955591e44c703b914b7131e2e2981ae84ec Mon Sep 17 00:00:00 2001
From: Mateusz Jablonski <mateusz.jablonski@intel.com>
Date: Fri, 18 Apr 2025 10:45:38 +0000
Subject: [PATCH] documentation: add instructions to build legacy1 package

Related-To: NEO-14596
Signed-off-by: Mateusz Jablonski <mateusz.jablonski@intel.com>
---
 BUILD.md            | 12 +++++++++++-
 LEGACY_PLATFORMS.md |  6 +++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/BUILD.md b/BUILD.md
index 46a3e0c162..fc21f01148 100644
--- a/BUILD.md
+++ b/BUILD.md
@@ -1,6 +1,6 @@
 <!---
 
-Copyright (C) 2020-2021 Intel Corporation
+Copyright (C) 2020-2025 Intel Corporation
 
 SPDX-License-Identifier: MIT
 
@@ -74,5 +74,15 @@ To build NEO with support for this feature follow above steps with these additio
 
 ` -DNEO_ENABLE_XE_EU_DEBUG_SUPPORT=1  -DNEO_USE_XE_EU_DEBUG_EXP_UPSTREAM=1`
 
+## Optional - Building NEO with support for Gen8, Gen9 and Gen11 devices
+
+Starting from release [24.35.30872.22](https://github.com/intel/compute-runtime/releases/tag/24.35.30872.22) regular packages support Gen12 and later devices.
+
+Gen8, Gen9 and Gen11 devices related code is available on [releases/24.35](https://github.com/intel/compute-runtime/tree/releases/24.35) branch. It is no longer available on master branch.
+
+To build NEO with support for Gen8, Gen9 and Gen11 devices follow above steps with these additional cmake options added to step 6.
+
+` -DNEO_LEGACY_PLATFORMS_SUPPORT=1  -DNEO_CURRENT_PLATFORMS_SUPPORT=0`
+
 
 ___(*) Other names and brands may be claimed as property of others.___
diff --git a/LEGACY_PLATFORMS.md b/LEGACY_PLATFORMS.md
index 324f54ec48..2c9921b683 100644
--- a/LEGACY_PLATFORMS.md
+++ b/LEGACY_PLATFORMS.md
@@ -1,6 +1,6 @@
 <!---
 
-Copyright (C) 2014 Intel Corporation
+Copyright (C) 2024-2025 Intel Corporation
 
 SPDX-License-Identifier: MIT
 
@@ -32,3 +32,7 @@ Support for Gen8, Gen9 and Gen11 devices will be delivered via packages with _le
 No new features will be added to legacy packages.
 
 In case of critical fixes we plan to deliver them through a new release from [24.35 release branch](https://github.com/intel/compute-runtime/tree/releases/24.35).
+
+## Build instructions
+
+To build legacy1 packages follow instructions [here](BUILD.md#optional---building-neo-with-support-for-gen8-gen9-and-gen11-devices).