new smatch

@@ -53,10 +53,14 @@
 
         ~/progs/smatch/devel/smatch_scripts/kchecker drivers/whatever/
 
 The kchecker script prints its warnings to stdout.
 
+The above scripts will ensure that any ARCH or CROSS_COMPILE environment
+variables are passed to kernel build system - thus allowing for the use of
+Smatch with kernels that are normally built with cross-compilers.
+
 If you are building something else (which is not the Linux kernel) then use
 something like:
 
         make CHECK="~/progs/smatch/devel/smatch --full-path" \
                 CC=~/progs/smatch/devel/smatch/cgcc | tee smatch_warns.txt