...
PLUGINDIR=$$(dirname $$(readlink -f $${TC_PATH}/host/usr/lib/gcc/arm-none-eabi/*/liblto_plugin.so))
HOSTLIBDIR=$${TC_PATH}/host/usr/lib/i386-linux-gnu/:$${TC_PATH}/host/usr/lib/:$${TC_PATH}/host/lib
LD_LIBRARY_PATH=$${HOSTLIBDIR}
CC=$${COMPILE_PREFIX}gcc
CXX=$${COMPILE_PREFIX}cpp
CXX=$${COMPILE_PREFIX}g++
LD=$${COMPILE_PREFIX}ld
AS=$${COMPILE_PREFIX}as
AR=$${COMPILE_PREFIX}ar
NM=$${COMPILE_PREFIX}nm
GCOV=$${COMPILE_PREFIX}gcov