If it's there, i.e. doesn't have a value known to be emitted by kernels
which didn't include support for passing it (0 or 0xbabefacedeadbeef),
set __ps_strings to it. Otherwise, use the old 'normal' PS_STRINGS value
for __ps_strings.
(currently the default), then it compiles on both an ECOFF toolchain
and on an ELF toolchain (but w/o support for dynamic linking or C++
constructors & destructors). If compiled without -DECOFF_COMPAT, it
supports statically- or dynamically-linked ELF binaries (and shared
libraries).
