Created attachment 27370 [details]
kernel config which shows the problem

I recently upgraded to make-3.82. It seems to have broken kernel compiling. If I enable CONFIG_FIRMWARE_IN_KERNEL=y and compile in an object directory like this:make-3.81 O=/tmp/linux-build-dir
then the build fails like this:

  LD      sound/usb/misc/built-in.o
  LD      sound/usb/usx2y/built-in.o
  LD      sound/usb/built-in.o
  CC      sound/last.o
  LD      sound/built-in.o
make[2]: *** No rule to make target `/tmp/linux-build-dir/firmware/radeon/', needed by `firmware/radeon/R100_cp.bin.gen.S'.  Stop.
make[1]: *** [firmware] Error 2
make: *** [sub-make] Error 2
andy:~$ 


If I build in the kernel source with a straightforward make then the build succeeds. If I use an object dir but disable CONFIG_FIRMWARE_IN_KERNEL then the build succeeds. If I use make-3.81 then the build succeeds.

The combination of three things makes the build fail:
1 using an object dir
2 CONFIG_FIRMWARE_IN_KERNEL=y
3 make-3.82