# Step 1 Initial cross toolchain.
# Before do environment variables initialization, we check current env settings, e.g. $CC
echo $CC
# Now we will start environment variables initialization.
source ./sdk/environment-setup-armv7at2hf-neon-oe-linux-gnueabi
# After environment initialization complete, let's check environment variables again.
echo $CC
pwd
env | grep $(basename `echo $PWD`)
# as you can see, a lot of variables have been added into env