The following options are available for compilation descriptions:
? defaultlayer : <layer>
? defaultlayer :
ascii
binary
debug|d
definition
demand=<list>
demand{<relative_path>}=<list>
dep=<list>
exec
extdep=<list>
inc=<list>
interface
noobjcopy
noshrglob
noversion
obj=<list>
output=<list>
parentlinkoption=<link_option>
profile|p
remake
shrglob
uncond