Linux Kernel Building Error for EVM6678

Hello everyone

I am using Fedora 20 64bit. I am encountering a building error when I follow the instruction in the website

In the step, "./prj config" I got following output in the terminal.

scripts/setup

Skip setup of CGT for BIOS & bare-metal (not needed)
Skip setup of BIOS, IPC, XDC, and XDAIS (not needed)
distro == Fedora
This distribution is not setup for auto setup, doing basic checks ...
found GCC version 4.5-124 in /home/iart/my-linux-c6x/opt/gcc-c6x
found uClibc source in /home/iart/my-linux-c6x/opt/gcc-c6x-uclibc
setup is complete

And then I type "./prj build". I got following; (only part of terminal output is showing below)

#
# configuration written to .config
#
make ARCH=c6x O=/home/iart/my-linux-c6x/Build/kobjs/evmc6678.el/
  GEN     /home/iart/my-linux-c6x/Build/kobjs/evmc6678.el/Makefile
scripts/kconfig/conf -s arch/c6x/Kconfig
  Using /home/iart/my-linux-c6x/linux-c6x as source for kernel
  GEN     /home/iart/my-linux-c6x/Build/kobjs/evmc6678.el/Makefile
  CHK     include/linux/version.h
  CHK     include/generated/utsrelease.h
  CALL    /home/iart/my-linux-c6x/linux-c6x/scripts/checksyscalls.sh
  CHK     include/generated/compile.h
make[6]: *** No rule to make target `/home/iart/my-linux-c6x/Build/kobjs/evmc6678.el/firmware/keystone-pdsp/', needed by `firmware/keystone-pdsp/pa_pdsp_default.fw.gen.S'.  Stop.
make[5]: *** [firmware] Error 2
make[4]: *** [sub-make] Error 2
make[3]: *** [kernel-sub] Error 2
make[2]: *** [one-kernel] Error 2
Build of kernel evmc6678 Failed
make[1]: *** [one-kernels] Error 2
make: *** [kernels] Error 2

Can anyone help me with that?

Before I follow the Linux-c6x 2.0 Release, I install CCS 5.5 by following the instruction for Fedora 20 64bit at here.

http://processors.wiki.ti.com/index.php/Linux_Host_Support_CCSv5#Fedora_20_64bit

Thanks

XIning Yu