error:
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ccache: FATAL: Could not find compiler "arm-eabi-gcc" in PATH
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solution:
[root@localhost cm-13-kiwi]# echo $ANDROID_TOOLCHAIN
/opt/android-x86/cm-13-kiwi/prebuilts/gcc/linux-x86/x86/x86_64-linux-android-4.9/bin
[root@localhost cm-13-kiwi]# ls
x86_64-linux-android-gcc
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[root@localhost cm-13-kiwi]# vim build/core/tasks/kernel.mk
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#KERNEL_TOOLCHAIN_PREFIX ?= arm-eabi- // alter the line
KERNEL_TOOLCHAIN_PREFIX ?= x86_64-linux-android-
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