Support complex toolchains  Instead of specifying the name of the toolchain and relying on arm-eabi- use the entire path to the custom toolchain.  Add the following line to BoardConfig.mk to use the custom toolchain for kernel For linaro: TARGET_KERNEL_CUSTOM_TOOLCHAIN := linaro/bin/arm-linux-gnueabihf-  For GCC 4.4.3: TARGET_KERNEL_CUSTOM_TOOLCHAIN := arm-eabi-4.4.3/bin/arm-eabi-  The more we write out paths the better. This helped fix 4.6 compile of CM kernel for me