[yocto] gcc reports sysroot is /not/exist!

[Chris Simmonds]

Hi,

I am using Yocto fido (1.8) to generate an SDK for a BeaglBone. I
generate the it using the command:

$ bitbake core-image-minimal -c populate_sdk

Having installed the resulting SDK and sourced
/opt/poky/1.8/environment-setup-cortexa8hf-vfp-neon-poky-linux-gnueabi

I find that the sysroot is not set:

$ arm-poky-linux-gnueabi-gcc -print-sysroot
/not/exist

This used to work fine in 1.7 and earlier. It looks like now I have to
use $CC in place of arm-poky-linux-gnueabi-gcc, but that messes up many
Makefiles which set the compiler with something like

CC=$(CROSS_COMPILE)gcc

What to do? Why is gcc not configured with a sysroot any more?

Chris Simmonds.