The EXIT_SUCCESS constant and some others are present in StdLibTypes.inc for Android and OSX:
$(BDS)\source\rtl\posix\android\StdLibTypes.inc$(BDS)\source\rtl\posix\osx\StdLibTypes.inc
const
RAND_MAX = $7FFFFFFF;
{$EXTERNALSYM RAND_MAX}
EXIT_FAILURE = 1;
{$EXTERNALSYM EXIT_FAILURE}
EXIT_SUCCESS = 0;
{$EXTERNALSYM EXIT_SUCCESS}
But they are not present for Linux.
$(BDS)\source\rtl\posix\linux\StdLibTypes.inc
Is this merely an oversight, or is there some valid reasoning behind it?