[yocto] bitbake -c devshell option

[Marco]

Hello,
I was used to work with oe-classic.
When I used oe-classic, often I used the 'devshell' option to try to 
compile (make uImage) the kernel with the entire environment set up 
correctly.
Now if I do the same procedure with Yocto 8 Danny it does not work.
For example I'm using a default configuration below:

1st step
---
MACHINE="beagleboard" bitbake -c devshell virtual/kernel

Build Configuration:
BB_VERSION        = "1.16.0"
TARGET_ARCH       = "arm"
TARGET_OS         = "linux-gnueabi"
MACHINE           = "beagleboard"
DISTRO            = "poky"
DISTRO_VERSION    = "1.3"
TUNE_FEATURES     = "armv7a vfp neon cortexa8"
TARGET_FPU        = "vfp-neon"
meta
meta-yocto
meta-yocto-bsp    = "danny:09031ac2fc0f30ec577ee823fc61ff0e5d852e21"

NOTE: Resolving any missing task queue dependencies
NOTE: Preparing runqueue
NOTE: Executing SetScene Tasks
NOTE: Executing RunQueue Tasks
NOTE: Tasks Summary: Attempted 912 tasks of which 912 didn't need to be 
rerun and all succeeded.


2nd step just after 1st
------------------------
MACHINE="beagleboard" bitbake -c devshell virtual/kernel

- Devshell starts in a new screen
------------------------
$ pwd
~/yocto-8-danny/poky/build/tmp/work/beagleboard-poky-linux-gnueabi/linux-yocto-3.4.11+git1+a201268353c030d9fafe00f2041976f7437d9386_1+449f7f520350700858f21a5554b81cc8ad23267d-r4.3/linux

- lauch a kernel build (as I was used to do)
------------------------
$ make
scripts/kconfig/conf --silentoldconfig Kconfig
***
*** Configuration file ".config" not found!
***
*** Please run some configurator (e.g. "make oldconfig" or
*** "make menuconfig" or "make xconfig").
***
make[2]: *** [silentoldconfig] Error 1
make[1]: *** [silentoldconfig] Error 2
make: *** No rule to make target `include/config/auto.conf', needed by 
`include/config/kernel.release'.  Stop.


I would like to find out whether you can still do this and what is the 
new way to go

TIA
-- 
Marco Cavallini