Obtaining "proprietary binaries"You need to obtain "proprietary binaries" which is not include the Android Open-Source Project.
To run the script for obtaining device's "proprietary binaries"
$ cd device/samsung/crespo
After running script, "vendor" drectory is generated in the root of the build environment.
building the configuration that matches a devicerunning to build for crespo.
$ . build/envsetup.sh
$ lunch full_crespo-userdebug