%************************************************************************
%*									*
\section[mkworld-plat-GEN]{{\em Defaults} for platform-specific things}
%*									*
%************************************************************************

\begin{code}
#ifndef OSMajorVersion
#define OSMajorVersion		0
#endif
#ifndef OSMinorVersion
#define OSMinorVersion		0
#endif

#ifndef HasExecableScripts
#define HasExecableScripts	YES	/* can execute scripts with #! */
#endif

#ifndef ConstructMFLAGS
#define ConstructMFLAGS		NO	/* build MFLAGS from MAKEFLAGS */
#endif
#if ConstructMFLAGS
MFLAGS = -$(MAKEFLAGS)
#endif

#ifndef BourneShell			/* to force shell in Makefile */
#define BourneShell	/bin/sh
#endif
SHELL = BourneShell
\end{code}

Have System V-ish \tr{times.h}, with \tr{times} routine, rather than
Berkeley-style \tr{time.h} with \tr{ftime}, etc.
\begin{code}
#ifndef CppHaveSysVishTimesH
#define CppHaveSysVishTimesH /*nothing*/
#endif
\end{code}