On Thu, 31 Jan 2013 18:24:01 +0100, Matthias Brugger said:

2013/1/30 Rahul Gandhi <rahul.rahulgags@gmail.com>:

...

I am trying to compile Kernel for my Android device. I am using the NDK Toolchain (arm-linux-androideabi-4.4.3). When I use the defconfig, the kernel compiles without any errors but when I flash it onto my device, it either gets stuck on the HTC logo or continuously reboots. If I pull the config.gz from my device, it gives errors at the tome of compilation.

What could have possibly gone wrong?

first of all, check the kernel logs. that will give you a clue where to start digging.

If it hangs on the HTC logo or reboots, his kernel isn't living long enough for userspace to retrieve the dmesg buffer. First thing I'd try is a combo of the 3 kernel parameters 'earlyprintk', 'ignore_loglevel', 'initcall_debug' and either serial console or netconsole. Though it's quite possible that he's dying before even that infrastructure can give a hint, in which case it gets a lot trickier (and will probably require some help from the hardware platform in the form of either a JTAG interface or enough infrastructure to use kgdb or similar tool...)