autotools: add default for CACHED_CONFIGUREVARS

Ensure that this variable has a default value so that we don't get debug
messages that the variable couldn't be expanded.

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

diff --git a/meta/classes/autotools.bbclass b/meta/classes/autotools.bbclass
index 22880cc5e18600061fd135180f8268be4683f441..c92ca789973d27dd19a14c45dce6478faab7e192 100644 (file)
--- a/meta/classes/autotools.bbclass
+++ b/meta/classes/autotools.bbclass
@@ -77,6 +77,8 @@ CONFIGUREOPTS = " --build=${BUILD_SYS} \
                  ${@append_libtool_sysroot(d)}"
 CONFIGUREOPT_DEPTRACK ?= "--disable-dependency-tracking"
 
+CACHED_CONFIGUREVARS ?= ""
+
 AUTOTOOLS_SCRIPT_PATH ?= "${S}"
 CONFIGURE_SCRIPT ?= "${AUTOTOOLS_SCRIPT_PATH}/configure"