Add option to switch off legacy config generator

Author: bramoosterhuis

package/wpe/wpeframework/Config.in

@@ -133,6 +133,13 @@ config BR2_PACKAGE_WPEFRAMEWORK_SYSTEM_PREFIX
     string "system prefix"
     default ""
 
+config BR2_PACKAGE_WPEFRAMEWORK_DISABLE_LEGACY_CONFIG_GENERATOR
+    bool "disable legacy config generator"
+    default n
+    help
+      This disables the legacy config generator for all thunder components by default
+      even if you build with a cmake version < v3.20.0.
+
 config BR2_PACKAGE_WPEFRAMEWORK_HIDE_NON_EXTERNAL_SYMBOLS
     bool "hide non external symbols"
     default y

package/wpe/wpeframework/wpeframework.mk

@@ -35,6 +35,10 @@ WPEFRAMEWORK_CONF_OPTS += \
        -DCMAKE_MODULE_PATH=$(HOST_DIR)/share/cmake/Modules
 endif
 
+ifeq ($(BR2_PACKAGE_WPEFRAMEWORK_DISABLE_LEGACY_CONFIG_GENERATOR),y)
+	WPEFRAMEWORK_CONF_OPTS += -DLEGACY_CONFIG_GENERATOR=OFF
+endif
+
 ifeq ($(BR2_PACKAGE_WPEFRAMEWORK_HIDE_NON_EXTERNAL_SYMBOLS),y)
 	WPEFRAMEWORK_CONF_OPTS += -DHIDE_NON_EXTERNAL_SYMBOLS=ON
 else