Initial Commit

generic.h

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+/* generic.h -- anything you don't #undef at the end remains in effect.
+   The ONLY things that go in here are generic indicator flags; it's up
+   to your programs to declare and call things based on those flags.
+
+   You should only need to make changes via a minimal system-specific section
+   at the end of this file.  To build a new section, rip through this and
+   check everything it mentions on your platform, and #undef that which needs
+   it.  If you generate a system-specific section you didn't find in here,
+   please mail me a copy so I can update the "master".
+
+   I realize I'm probably inventing another pseudo-standard here, but
+   goddamnit, everybody ELSE has already, and I can't include all of their
+   hairball schemes too.  HAVE_xx conforms to the gnu/autoconf usage and
+   seems to be the most common format.  In fact, I dug a lot of these out
+   of autoconf and tried to common them all together using "stupidh" to
+   collect data from platforms.
+
+   In disgust...  _H*  940910, 941115.  Pseudo-version: 1.1  */
+
+#ifndef GENERIC_H		/* only run through this once */
+#define GENERIC_H
+
+/* =============================== */
+/* System calls, lib routines, etc */
+/* =============================== */
+
+/* How does your system declare malloc, void or char?  Usually void, but go
+   ask the SunOS people why they had to be different... */
+#define VOID_MALLOC
+
+/* notably from fwtk/firewall.h: posix locking? */
+#define HAVE_FLOCK		/* otherwise it's lockf() */
+
+/* if you don't have setsid(), you might have setpgrp().
+#define HAVE_SETSID
+
+/* random() is generally considered better than rand() */
+/* xxx: rand48? */
+#define HAVE_RANDOM
+
+/* if your machine doesn't have lstat(), it should have stat() [dos...] */
+#define HAVE_LSTAT
+
+/* different kinds of term ioctls.  How to recognize them, very roughly:
+   sysv/POSIX_ME_HARDER:  termio[s].h, struct termio[s], tty.c_*[]
+   bsd/old stuff:  sgtty.h, ioctl(TIOCSETP), sgttyb.sg_*, tchars.t_*
+#define HAVE_TERMIOS
+
+/* dbm vs ndbm */
+#define HAVE_NDBM
+
+/* extended utmp/wtmp stuff.  MOST machines still do NOT have this SV-ism */
+#define UTMPX
+
+/* some systems have nice() which takes *relative* values... [resource.h] */
+#define HAVE_SETPRIORITY
+
+/* a sysvism, I think, but ... */
+#define HAVE_SYSINFO
+
+/* punted for now: setown / siocspgrp ... see firewall.h */
+
+/* ============= */
+/* Include files */
+/* ============= */
+
+/* Presence of these can be determined via a script that sniffs them
+   out if you aren't sure. */
+
+/* stdlib comes with most modern compilers, but ya never know */
+#define HAVE_STDLIB_H
+
+/* not on a DOS box! */
+#define HAVE_UNISTD_H
+
+/* stdarg is a weird one */
+#define HAVE_STDARG_H
+
+/* dir.h or maybe ndir.h otherwise. */
+#define HAVE_DIRENT_H
+
+/* string or strings */
+#define HAVE_STRINGS_H
+
+/* if you don't have lastlog.h, what you want might be in login.h */
+#define HAVE_LASTLOG_H
+
+/* predefines for _PATH_various */
+#define HAVE_PATHS_H
+
+/* assorted others */
+#define HAVE_PARAM_H
+#define HAVE_SYSMACROS_H	/* in sys/! */
+#define HAVE_TTYENT_H		/* securetty et al */
+
+/* ==================== */
+
+/* Still maybe have to do something about the following, if it's even
+   worth it.  I just grepped a lot of these out of various code, without
+   looking them up yet:
+	   
+#define HAVE_EINPROGRESS
+#define HAVE_F_SETOWN
+#define HAVE_SETENV ... now *there's* a hairy one; **environ is portable
+#define BIG_ENDIAN/little_endian ... *please* try to avoid this stupidity
+#define HAVE_GETUSERSHELL ... you could always pull it out of getpwent()
+#define HAVE_SETE[UG]ID ... lib or syscall, it varies on diff platforms
+#define HAVE_STRCHR ... should actually be handled by string/strings
+#define HAVE_PSTAT
+#define HAVE_ST_BLKSIZE ... a stat() thing?
+#define HAVE_IP_TOS
+#define HAVE_STRFTIME ... screw this, we should just INCLUDE one for lame
+   old boxes that don't have it [sunos 3.x, early 4.x?]
+#define HAVE_VFPRINTF
+#define HAVE_SHADOW_PASSWD  ... in its multitudinous schemes?? ... how
+   about sumpin' like #define SHADOW_PASSWD_TYPE ... could get grody.
+#define SIG*  ... what a swamp, punt for now; should all be in signal.h
+#define HAVE_STRCSPN  ... see larry wall's comment in the fwtk regex code
+#define ULTRIX_AUTH  ... bwahaha.
+#define HAVE_YP  or NIS or whatever you wanna call it this week
+randomness about VARARGS??
+
+There's also the issue about WHERE various .h files live, sys/ or otherwise.
+There's a BIG swamp lurking where network code of any sort lives.
+
+*/
+
+/* ======================== */
+/* System-specific sections */
+/* ======================== */
+
+/* By turning OFF various bits of the above,  you can customize for
+   a given platform.  /*
+
+/* DOS boxes, with MSC; you may need to adapt to a different compiler. */
+#ifdef MSDOS
+#undef HAVE_FLOCK
+#undef HAVE_RANDOM
+#undef HAVE_LSTAT
+#undef HAVE_TERMIOS
+#undef UTMPX
+#undef HAVE_SYSINFO
+#undef HAVE_UNISTD_H
+#undef HAVE_DIRENT_H	/* unless you have the k00l little wrapper from L5!! */
+#undef HAVE_STRINGS_H
+#undef HAVE_LASTLOG_H
+#undef HAVE_PATHS_H
+#undef HAVE_PARAM_H
+#undef HAVE_SYSMACROS_H
+#undef HAVE_TTYENT_H
+#endif /* MSDOS */
+
+/* buglix 4.x; dunno about 3.x on down.  should be bsd4.2. */
+#ifdef ULTRIX
+#undef UTMPX
+#undef HAVE_PATHS_H
+#undef HAVE_SYSMACROS_H
+#endif /* buglix */
+
+/* some of this might still be broken on older sunoses */
+#ifdef SUNOS
+#undef VOID_MALLOC
+#undef UTMPX
+#undef HAVE_PATHS_H
+#endif /* sunos */
+
+/* "contact your vendor for a fix" */
+#ifdef SOLARIS
+/* has UTMPX */
+#undef HAVE_SETPRIORITY
+#undef HAVE_STRINGS_H	/* this is genuinely the case, go figure */
+#undef HAVE_PATHS_H
+#undef HAVE_TTYENT_H
+#endif /* SOLARIS */
+
+/* whatever aix variant MIT had at the time */
+#ifdef AIX
+#undef UTMPX
+#undef HAVE_LASTLOG_H
+#define HAVE_LOGIN_H	/* "special", in the educational sense */
+#endif /* aix */
+
+/* linux, which is trying as desperately as the gnu folks can to be
+   POSIXLY_CORRECT.  I think I'm gonna hurl... */
+#ifdef LINUX
+#undef UTMPX
+#undef HAVE_SYSINFO
+#undef HAVE_TTYENT_H
+#endif /* linux */
+
+/* irix 5.x; may not be correct for earlier ones */
+#ifdef IRIX
+/* wow, does irix really have everything?! */
+#endif /* irix */
+
+/* osf on alphas */
+#ifdef OSF
+#undef UTMPX
+#endif /* osf */
+
+/* they's some FUCKED UP paths in this one! */
+#ifdef FREEBSD
+#undef UTMPX
+#undef HAVE_SYSINFO
+#undef HAVE_LASTLOG_H
+#undef HAVE_SYSMACROS_H
+#endif /* freebsd */
+
+/* From the sidewinder site, of all places; may be unreliable */
+#ifdef BSDI
+#undef UTMPX
+#undef HAVE_LASTLOG_H
+#undef HAVE_SYSMACROS_H
+#undef HAVE_TTYENT_H
+/* and their malloc.h was in sys/ ?! */
+#endif /* bsdi */
+
+/* netbsd/44lite, jives with amiga-netbsd from cactus */
+#ifdef NETBSD
+#undef UTMPX
+#undef HAVE_SYSINFO
+#undef HAVE_LASTLOG_H
+#endif /* netbsd */
+
+/* Make some "generic" assumptions if all else fails */
+#ifdef GENERIC
+#undef HAVE_FLOCK
+#if defined(SYSV) && (SYSV < 4)  /* TW leftover: old SV doesnt have symlinks */
+#undef HAVE_LSTAT
+#endif /* old SYSV */
+#undef HAVE_TERMIOS
+#undef UTMPX
+#undef HAVE_PATHS_H
+#endif /* generic */
+
+/* ================ */
+#endif /* GENERIC_H */