From 161eaeed2575f7a3ee25024baf3d6041f1f98044 Mon Sep 17 00:00:00 2001
From: Tomas Rezucha <tomas.rezucha@espressif.com>
Date: Thu, 17 Mar 2022 13:10:29 +0100
Subject: [PATCH] usb_host: Don't build CDC host driver for unsupported targets

---
 .../cdc/common/cdc_acm_host/CMakeLists.txt     | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/examples/peripherals/usb/host/cdc/common/cdc_acm_host/CMakeLists.txt b/examples/peripherals/usb/host/cdc/common/cdc_acm_host/CMakeLists.txt
index 39bec48e25..f2ff73f8fc 100644
--- a/examples/peripherals/usb/host/cdc/common/cdc_acm_host/CMakeLists.txt
+++ b/examples/peripherals/usb/host/cdc/common/cdc_acm_host/CMakeLists.txt
@@ -1,3 +1,15 @@
-idf_component_register(SRCS "cdc_acm_host.c"
-                    INCLUDE_DIRS "include"
-                    REQUIRES usb)
+set(srcs)
+set(include)
+# As CONFIG_USB_OTG_SUPPORTED comes from Kconfig, it is not evaluated yet
+# when components are being registered.
+set(require usb)
+
+if(CONFIG_USB_OTG_SUPPORTED)
+    list(APPEND srcs "cdc_acm_host.c")
+    list(APPEND include "include")
+endif()
+
+idf_component_register(SRCS ${srcs}
+                       INCLUDE_DIRS ${include}
+                       REQUIRES ${require}
+                       )