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generic.h
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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 */