+check_macosx_sdk()
+{
+ [ -z "${OSX_VERSION}" ] && echo "OSX_VERSION not specified, assuming 10.5" && OSX_VERSION=10.5
+ SDK="/Developer/SDKs/MacOSX${OSX_VERSION}.sdk"
+ if [ ! -d "${SDK}" ]
+ then
+ echo "
+*** ${SDK} does not exist, please install required SDK, or use export OSX_VERSION=10.6 ***
+"
+ exit 1
+ fi
+ add_make "OSX_VERSION ?= ${OSX_VERSION}"
+}
+
+check_android_sdk()
+{
+ [ -z "${ANDROID_NDK}" ] && echo "You must set ANDROID_NDK environment variable" && exit 1
+ add_make "ANDROID_NDK := ${ANDROID_NDK}"
+ test -z "${NO_NEON}" && add_make_enabled "HAVE_NEON"
+}
+