define PLASMA_FEATURE_POSIX on POSIX platforms
define PLASMA_FEATURE_POSIX on POSIX platforms

define PLASMA_FEATURE_POSIX on POSIX platforms
(intended for use when choosing to include headers such as unistd.h)

gstrauss/mcdb,gstrauss/mcdb,gstrauss/mcdb,gstrauss/mcdb,gstrauss/mcdb