/* 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, 950511.  Pseudo-version: 1.3

   Updated 951104 with many patches from netcat feedback, and properly

   closed a lot of slop in open-ended comments: version 1.4

   960217 + nextstep: version 1.5

*/

#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() */

#define HAVE_RANDOM

/* the srand48/lrand48/etc family is s'posedly even better */

#define HAVE_RAND48

/* bmc@telebase and others have suggested these macros if a box *does* have

   rand48.  Will consider for later if we're doing something that really

   requires stronger random numbers, but netcat and such certainly doesn't.

#define srandom(seed) srand48((long) seed)

#define random()      lrand48() */

/* 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

/* ============= */

/* Include files */

/* ============= */

/* Presence of these can be determined via a script that sniffs them

   out if you aren't sure.  See "stupidh"... */

/* 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

/* some SV-flavors break select stuff out separately */

#define HAVE_SELECT_H

/* assorted others */

#define HAVE_PARAM_H		/* in sys/ */

#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

HAVE_FILIO_H ... fionbio, fiosetown, etc... will need for hairier

  select loops.

#define HAVE_SETENV ... now *there's* a hairy one; **environ is portable

#define BIG_ENDIAN/little_endian ... *please* try to avoid this stupidity

   and LSBFIRST/MSBFIRST

#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'll 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.

   ... looks like sysv /etc/shadow, getspent() family is common.

#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??

--- later stuff to be considered ---

#define UINT4 ... u-int on alpha/osf, i.e. __alpha/__osf__, ulong elsewhere?

   dont name it that, though, it'll conflict with extant .h files like md5

randomness about machine/endian.h, machine/inline.h -- bsdi, net/2

randomness about _PATH_WTMP vs WTMP_FILE and where they even live!!

#define HAVE_SYS_ERRLIST ... whether it's in stdio.h or not [bsd 4.4]

--- still more stuff

#define HAVE_SETENV

#define _PATH_UTMP vs UTMP_FILE, a la deslogind?!

#define HAVE_DAEMON

#define HAVE_INETADDR  [vixie bind?]

lseek: SEEK_SET vs L_SET and associated lossage [epi-notes, old 386Mach]

bsdi: ioctl_compat.h ?

--- takin' some ifdefs from CNS krb:

F_GETOWN/F_SETOWN

CRAY: long = 8 bytes, etc  [class with alpha?]

CGETENT

SIGINFO

SIGTSTP SIGTTOU SIGWINCH

SPX?

SYSV_TERMIO -- covered elsewhere, I hope

TIOCEXT TIOCFLUSH TIOC[GS]WINSIZ 

NEWINIT: something about init cleaning up dead login processes [telnet?]

PARENT_DOES_UTMP, too  [telnet]

VDISCARD

VEOL/VEOL2/VLNEXT VREPRINT -- termios stuff?, and related...

STREAMSPTY/STREAMSPTYEM

AF_INET/AF_UNSPEC, PF_*

ECHOCTL/ECHOKE

F_ULOCK [?!]

setpgrp/getpgrp() ONEARG business..

HAVE_ALLOCA

HAVE_GETUTENT

HAVE_SYS_SELECT_H  [irix!]

HAVE_DIRENT  [old 386mach has *direct.h*!]

HAVE_SIGSET

HAVE_VFORK_H and HAVE_VFORK

HAVE_VHANGUP

HAVE_VSPRINTF

HAVE_IPTOS_*

HAVE_STRCASECMP, STRNCASECMP

HAVE_SYS_FCNTL_H

HAVE_SYS_TIME_H

HAVE_UTIMES

NOTTYENT [?]

HAVE_FCHMOD

HAVE_GETUSERSHELL

HAVE_SIGCONTEXT  [stack hair, very machine-specific]

YYLINENO?

POSIX_SIGNALS

POSIX_TERMIOS

SETPROCTITLE -- breaks some places, like fbsd sendmail

SIG* -- actual signal names?  some are missing

SIOCGIFCONF

SO_BROADCAST

SHMEM  [krb tickets]

VARARGS, or HAVE_VARARGS

CBAUD

... and B300, B9600, etc etc

HAVE_BZERO  vs  memset/memcpy

HAVE_SETVBUF

HAVE_STRDUP

HAVE_GETENV

HAVE_STRSAVE

HAVE_STBLKSIZE  [stat?]

HAVE_STREAM_H -- in sys/, ref sendmail 8.7 for IP_SRCROUTE

FCHMOD

INITGROUPS -- most machines seem to *have*

SETREUID

SNPRINTF

SETPGRP semantics bsd vs. sys5 style

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.  Yes, we're ignoring the stock compiler predefines

   and using our own plugged in via the Makefile. */

/* DOS boxes, with MSC; you may need to adapt to a different compiler. */

/* looks like later ones *do* have dirent.h, for example */

#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_SELECT_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

#undef HAVE_SELECT_H

#endif /* buglix */

/* some of this might still be broken on older sunoses */

#ifdef SUNOS

#undef VOID_MALLOC

#undef UTMPX

#undef HAVE_PATHS_H

#undef HAVE_SELECT_H

#endif /* sunos */

/* "contact your vendor for a fix" */

#ifdef SOLARIS

/* has UTMPX */

#undef HAVE_RANDOM

#undef HAVE_SETPRIORITY

#undef HAVE_STRINGS_H	/* this is genuinely the case, go figure */

#undef HAVE_PATHS_H

#undef HAVE_SELECT_H

#undef HAVE_TTYENT_H

#endif /* SOLARIS */

/* whatever aix variant MIT had at the time; 3.2.x?? */

#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_SELECT_H

#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

#undef HAVE_SELECT_H

#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

#undef HAVE_SELECT_H	/* actually a lie, but only for kernel */

#endif /* freebsd */

/* Originally from the sidewinder site, of all places, but subsequently

   checked further under a more normal bsdi 2.0 */

#ifdef BSDI

#undef UTMPX

#undef HAVE_LASTLOG_H

#undef HAVE_SYSMACROS_H

/* and their malloc.h was in sys/ ?! */

#undef HAVE_SELECT_H

#endif /* bsdi */

/* netbsd/44lite, jives with amiga-netbsd from cactus */

#ifdef NETBSD

#undef UTMPX

#undef HAVE_SYSINFO

#undef HAVE_LASTLOG_H

#undef HAVE_SELECT_H

#endif /* netbsd */

/* Hpux 9.0x, from BBN and various patches sent in */

#ifdef HPUX

#undef HAVE_RANDOM	/* but *does* have ?rand48 -- need to consider.. */

#undef HAVE_UTMPX

#undef HAVE_LASTLOG_H	/* has utmp/wtmp/btmp nonsense, and pututline() */

#undef HAVE_PATHS_H

#undef HAVE_SELECT_H

#undef HAVE_TTYENT_H

#endif /* hockeypux */

/* Unixware [a loose definition of "unix", to be sure], 1.1.2 [at least]

   from Brian Clapper.  He wasn't sure about 2.0... */

#ifdef UNIXWARE

/* has UTMPX */

#undef HAVE_SETPRIORITY

/* NOTE: UnixWare does provide the BSD stuff, in "/usr/ucbinclude" (headers)

   and "/usr/ucblib" (libraries).  However, I've run into problems linking

   stuff out of that version of the C library, when objects are also coming

   out of the "regular" C library.  My advice: Avoid the BSD compatibility

   stuff wherever possible.  Brian Clapper <bmc@telebase.com> */

#undef HAVE_STRINGS_H

#undef HAVE_PATHS_H

#undef HAVE_TTYENT_H

#endif /* UNIXWARE */

/* A/UX 3.1.x from darieb@sandia.gov */

#ifdef AUX

#undef HAVE_RANDOM

#undef HAVE_SELECT_H	/* xxx: untested */

#endif /* a/ux */

/* NeXTSTEP 3.2 motorola mudge@l0pht.com xxx should also work with

   white hardware and Sparc/HPPA. Should work with 3.3 too as it's

   4.3 / 4.4 bsd wrapped around mach */

#ifdef NEXT

#undef UTMPX

#undef HAVE_SELECT_X

#endif /* NeXTSTEP 3.2 motorola */

/* 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

#undef HAVE_SELECT_H

#endif /* generic */

/* ================ */

#endif /* GENERIC_H */