Default [Q] Building Error

Code:
No private recovery resources for TARGET_DEVICE mako
host C: mkbootimg <= system/core/mkbootimg/mkbootimg.c
prebuilts/tools/gcc-sdk/gcc: line 40: prebuilts/tools/gcc-sdk/../../gcc/linux-x86/host/i686-linux-glibc2.7-4.6/bin/i686-linux-gcc: No such file or directory
make: *** [/home/karishnu/android/omni/out/host/linux-x86/obj/EXECUTABLES/mkbootimg_intermediates/mkbootimg.o] Error 127

real	2m7.172s
user	0m57.349s
sys	0m20.914s
karishnu@karishnu-PC:~/android/omni$
I am using ubuntu 13.10.

What I have tried :

1. Reinstalling GCC and build-essentials
2. checked if i686-linux-gcc is present (it is)
3. resynced the repo many times

What I found :

mkbootimg.o is missing from the directory.

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Pls temme what to do. I have tried a lot to fix this problem but in vain. There are no other threads mentioning the same problem also.