The memory.x file is searched in the current directory and in all
directories specified with the -L switch.
There is also a default directory which is /usr/m6811-elf/lib or xxx\m6811-elf\lib.
For example, in GEL, the memory.x file is read from the board
specific config directory. This is caused by the option:
and this configuration directory contains the memory.x file
that corresponds to the m68hc11-32k generic board.