add a simple prerequisite check
-rw-r--r-- 78 .cvsignore
-rw-r--r-- 1591 Config.in
-rw-r--r-- 17992 LICENSE
-rw-r--r-- 2778 Makefile
-rw-r--r-- 735 README
drwxr-xr-x - docs
drwxr-xr-x - include
drwxr-xr-x - package
-rw-r--r-- 3011 rules.mk
drwxr-xr-x - scripts
drwxr-xr-x - target
drwxr-xr-x - toolchain