From 6c9bbd6fef6e77df28d65626b5108c812098a270 Mon Sep 17 00:00:00 2001
From: Marc Herbert <marc.herbert@intel.com>
Date: Mon, 12 Jul 2021 03:30:32 +0000
Subject: [PATCH] zephyr/CMakeLists.txt: explain why we need if(CONFIG_SOF)

Not obvious plus many SOF developers are new to west.

Signed-off-by: Marc Herbert <marc.herbert@intel.com>
---
 zephyr/CMakeLists.txt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/zephyr/CMakeLists.txt b/zephyr/CMakeLists.txt
index 33cf7d75f..40aaf5ed7 100644
--- a/zephyr/CMakeLists.txt
+++ b/zephyr/CMakeLists.txt
@@ -1,5 +1,7 @@
 # This is still WIP - Not fully validated on any platform.
 
+# When west is installed, Zephyr's CMake invokes west to list and try to
+# compile every Zephyr module that can be found.
 if(CONFIG_SOF)
 
 if(CONFIG_LIBRARY)
@@ -580,5 +582,5 @@ add_definitions(-DSOF_SRC_HASH=0x${SOF_SRC_HASH} -DSOF_GIT_TAG="${SOF_GIT_TAG}")
 
 # Create Trace realtive file paths
 sof_append_relative_path_definitions(modules_sof)
-endif()
 
+endif() # CONFIG_SOF