+/*
+** Sequent DYNIX/ptx v2.0 (and higher)
+**
+** For DYNIX/ptx v1.x, undefine HASSETREUID.
+**
+** From Tim Wright <timw@sequent.com>.
+*/
+
+#ifdef _SEQUENT_
+# define SYSTEM5 1 /* include all the System V defines */
+# define HASSETSID 1 /* has POSIX setsid(2) call */
+# define HASINITGROUPS 1 /* has initgroups(3) call */
+# define HASSETREUID 1 /* has setreuid(2) call */
+# define HASGETUSERSHELL 0 /* does not have getusershell(3) call */
+# define GIDSET_T gid_t
+# define LA_TYPE LA_INT
+# define SFS_TYPE SFS_STATFS /* use <sys/statfs.h> statfs() impl */
+# define SPT_TYPE SPT_NONE /* don't use setproctitle */
+# ifndef IDENTPROTO
+# define IDENTPROTO 0 /* TCP/IP implementation is broken */
+# endif
+# ifndef _PATH_SENDMAILCF
+# define _PATH_SENDMAILCF "/usr/lib/sendmail.cf"
+# endif
+# ifndef _PATH_SENDMAILPID
+# define _PATH_SENDMAILPID "/etc/sendmail.pid"
+# endif
+#endif
+
+
+/*
+** Cray Unicos
+**
+** Ported by David L. Kensiski, Sterling Sofware <kensiski@nas.nasa.gov>
+*/
+
+#ifdef UNICOS
+# define SYSTEM5 1 /* include all the System V defines */
+# define SYS5SIGNALS 1 /* SysV signal semantics -- reset on each sig */
+# define MAXPATHLEN PATHSIZE
+# define LA_TYPE LA_ZERO
+# define SFS_TYPE SFS_4ARGS /* four argument statfs() call */
+# define SFS_BAVAIL f_bfree /* alternate field name */
+#endif
+
+
+/*
+** Apollo DomainOS
+**
+** From Todd Martin <tmartint@tus.ssi1.com> & Don Lewis <gdonl@gv.ssi1.com>
+**
+** 15 Jan 1994
+**
+*/
+
+#ifdef apollo
+# define HASSETREUID 1 /* has setreuid(2) call */
+# define HASINITGROUPS 1 /* has initgroups(2) call */
+# define SPT_TYPE SPT_NONE /* don't use setproctitle */
+# define LA_TYPE LA_SUBR /* use getloadavg.c */
+# define SFS_TYPE SFS_4ARGS /* four argument statfs() call */
+# define SFS_BAVAIL f_bfree /* alternate field name */
+# ifndef _PATH_SENDMAILCF
+# define _PATH_SENDMAILCF "/usr/lib/sendmail.cf"
+# endif
+# ifndef _PATH_SENDMAILPID
+# define _PATH_SENDMAILPID "/etc/sendmail.pid"
+# endif
+# undef S_IFSOCK /* S_IFSOCK and S_IFIFO are the same */
+# undef S_IFIFO
+# define S_IFIFO 0010000
+# ifndef IDENTPROTO
+# define IDENTPROTO 0 /* TCP/IP implementation is broken */
+# endif
+#endif
+
+
+/*
+** UnixWare 1.1.2.
+**
+** From Evan Champion <evanc@spatial.synapse.org>.
+*/
+
+#ifdef UNIXWARE
+# define SYSTEM5 1
+# define HASGETUSERSHELL 0 /* does not have getusershell(3) call */
+# define HASGETDTABLESIZE 1
+# define HASSETREUID 1
+# define HASSETSID 1
+# define HASINITGROUPS 1
+# define GIDSET_T gid_t
+# define SLEEP_T unsigned
+# define SFS_TYPE SFS_STATVFS
+# define LA_TYPE LA_ZERO
+# undef WIFEXITED
+# undef WEXITSTATUS
+# define _PATH_UNIX "/unix"
+# ifndef _PATH_SENDMAILCF
+# define _PATH_SENDMAILCF "/usr/ucblib/sendmail.cf"
+# endif
+# ifndef _PATH_SENDMAILPID
+# define _PATH_SENDMAILPID "/usr/ucblib/sendmail.pid"
+# endif
+# define SYSLOG_BUFSIZE 128
+#endif
+
+
+/*
+** Intergraph CLIX 3.1
+**
+** From Paul Southworth <pauls@locust.cic.net>
+*/
+
+#ifdef CLIX
+# define SYSTEM5 1 /* looks like System V */
+# ifndef HASGETUSERSHELL
+# define HASGETUSERSHELL 0 /* does not have getusershell(3) call */
+# endif
+# define DEV_BSIZE 512 /* device block size not defined */
+# define GIDSET_T gid_t
+# undef LOG /* syslog not available */
+# define NEEDFSYNC 1 /* no fsync in system library */
+# define GETSHORT _getshort
+#endif
+
+
+/*
+** NCR 3000 Series (SysVr4)
+**
+** From Kevin Darcy <kevin@tech.mis.cfc.com>.
+*/
+
+#ifdef NCR3000
+# define __svr4__
+# undef BSD
+# define LA_AVENRUN "avenrun"
+#endif
+
+
+/*
+** Tandem NonStop-UX SVR4
+**
+** From Rick McCarty <mccarty@mpd.tandem.com>.
+*/
+
+#ifdef NonStop_UX_BXX
+# define __svr4__
+#endif
+
+
+/*
+** Hitachi 3050R & 3050RX Workstations running HI-UX/WE2.
+**
+** Tested for 1.04 and 1.03
+** From Akihiro Hashimoto ("Hash") <hash@dominic.ipc.chiba-u.ac.jp>.
+*/
+
+#ifdef __H3050R
+# define SYSTEM5 1 /* include all the System V defines */
+# define HASINITGROUPS 1 /* has initgroups(3) call */
+# define setreuid(r, e) setresuid(r, e, -1)
+# define LA_TYPE LA_FLOAT
+# define SFS_TYPE SFS_VFS /* use <sys/vfs.h> statfs() implementation */
+# define HASSETVBUF /* HI-UX has no setlinebuf */
+# ifndef GIDSET_T
+# define GIDSET_T gid_t
+# endif
+# ifndef _PATH_UNIX
+# define _PATH_UNIX "/HI-UX"
+# endif
+# ifndef _PATH_SENDMAILCF
+# define _PATH_SENDMAILCF "/usr/lib/sendmail.cf"
+# endif
+# ifndef IDENTPROTO
+# define IDENTPROTO 0 /* TCP/IP implementation is broken */
+# endif
+# ifndef HASGETUSERSHELL
+# define HASGETUSERSHELL 0 /* getusershell(3) causes core dumps */
+# endif
+
+/* avoid m_flags conflict between db.h & sys/sysmacros.h on HIUX 3050 */
+# undef m_flags
+
+# ifdef __STDC__
+extern int syslog(int, char *, ...);
+# endif
+
+#endif
+
+
+/*
+** Amdahl UTS System V 2.1.5 (SVr3-based)
+**
+** From: Janet Jackson <janet@dialix.oz.au>.
+*/
+
+#ifdef _UTS
+# include <sys/sysmacros.h>
+# undef HASLSTAT /* has symlinks, but they cause problems */
+# define NEEDFSYNC 1 /* system fsync(2) fails on non-EFS filesys */
+# define SYS5SIGNALS 1 /* System V signal semantics */
+# define SYS5SETPGRP 1 /* use System V setpgrp(2) syscall */
+# define HASUNAME 1 /* use System V uname(2) system call */
+# define HASINITGROUPS 1 /* has initgroups(3) function */
+# define HASSETVBUF 1 /* has setvbuf(3) function */
+# define HASSIGSETMASK 0 /* does not have sigsetmask(2) function */
+# ifndef HASGETUSERSHELL
+# define HASGETUSERSHELL 0 /* does not have getusershell(3) function */
+# endif
+# define GIDSET_T gid_t /* type of 2nd arg to getgroups(2) isn't int */
+# define LA_TYPE LA_ZERO /* doesn't have load average */
+# define SFS_TYPE SFS_4ARGS /* use 4-arg statfs() */
+# define SFS_BAVAIL f_bfree /* alternate field name */
+# define _PATH_UNIX "/unix"
+# ifndef _PATH_SENDMAILCF
+# define _PATH_SENDMAILCF "/usr/lib/sendmail.cf"
+# endif
+#endif
+
+/*
+** Cray Computer Corporation's CSOS
+**
+** Contributed by Scott Bolte <scott@craycos.com>.
+*/
+
+#ifdef _CRAYCOM
+# define SYSTEM5 1 /* include all the System V defines */
+# define SYS5SIGNALS 1 /* SysV signal semantics -- reset on each sig */
+# define NEEDFSYNC 1 /* no fsync in system library */
+# define MAXPATHLEN PATHSIZE
+# define LA_TYPE LA_ZERO
+# define SFS_TYPE SFS_4ARGS /* four argument statfs() call */
+# define SFS_BAVAIL f_bfree /* alternate field name */
+# define _POSIX_CHOWN_RESTRICTED -1
+extern struct group *getgrent(), *getgrnam(), *getgrgid();
+#endif
+
+
+/*
+** Sony NEWS-OS 4.2.1R and 6.0.3
+*/
+
+#ifdef sony_news
+# ifndef __svr4
+ /* NEWS-OS 4.2.1R */
+# ifndef BSD
+# define BSD /* has BSD routines */
+# endif
+# define HASUNSETENV 1 /* has unsetenv(2) call */
+# undef HASSETVBUF /* don't actually have setvbuf(3) */
+# define WAITUNION 1 /* use "union wait" as wait argument type */
+# define LA_TYPE LA_INT
+# define SFS_TYPE SFS_VFS /* use <sys/vfs.h> statfs() implementation */
+# ifndef HASFLOCK
+# define HASFLOCK 1 /* has flock(2) call */
+# endif
+# define setpgid setpgrp
+# undef WIFEXITED
+# undef WEXITSTATUS
+typedef int pid_t;
+typedef int (*sigfunc_t)();
+# define SIGFUNC_DEFINED
+
+# else
+ /* NEWS-OS 6.0.3 with /bin/cc */
+# define SYSTEM5 1 /* include all the System V defines */
+# define SYS5SIGNALS 1 /* SysV signal semantics -- reset on each sig */
+# define HASINITGROUPS 1 /* has initgroups(3) call */
+# define HASSETREUID 1 /* has setreuid(2) call */
+# define HASSETSID 1 /* has Posix setsid(2) call */
+# define HASGETUSERSHELL 1 /* DOES have getusershell(3) call in libc */
+# define LA_TYPE LA_INT
+# define SFS_TYPE SFS_STATVFS /* use <sys/statvfs.h> statvfs() impl */
+# define GIDSET_T gid_t
+# define setreuid(r, e) seteuid(e)
+# undef WIFEXITED
+# undef WEXITSTATUS
+# define _PATH_UNIX "/stand/unix"
+# ifndef _PATH_SENDMAILCF
+# define _PATH_SENDMAILCF "/etc/mail/sendmail.cf"
+# endif
+# ifndef _PATH_SENDMAILPID
+# define _PATH_SENDMAILPID "/etc/mail/sendmail.pid"
+# endif
+
+# endif
+#endif
+
+
+/*
+** Omron LUNA/UNIOS-B 3.0, LUNA2/Mach and LUNA88K Mach
+*/
+
+#ifdef luna
+# ifndef IDENTPROTO
+# define IDENTPROTO 0 /* TCP/IP implementation is broken */
+# endif
+# ifdef uniosb
+# include <sys/time.h>
+# define NEEDVPRINTF 1 /* need a replacement for vprintf(3) */
+# endif
+# define NEEDGETOPT 1 /* need a replacement for getopt(3) */
+# define WAITUNION 1 /* use "union wait" as wait argument type */
+# ifdef uniosb
+# define LA_TYPE LA_INT
+# endif
+# ifdef luna2m
+# define LA_TYPE LA_SUBR
+# endif
+# ifdef luna88k
+# define LA_TYPE LA_INT
+# endif
+# define SFS_TYPE SFS_VFS /* use <sys/vfs.h> statfs() implementation */
+# define setpgid setpgrp
+# undef WIFEXITED
+# undef WEXITSTATUS
+typedef int pid_t;
+typedef int (*sigfunc_t)();
+# define SIGFUNC_DEFINED
+extern char *getenv();
+extern int errno;
+# ifndef _PATH_SENDMAILCF
+# define _PATH_SENDMAILCF "/usr/lib/sendmail.cf"
+# endif
+#endif
+
+
+/*
+** NEC EWS-UX/V 4.2
+**
+** with /usr/ucb/cc
+*/
+
+#ifdef nec_ews_svr4
+# ifndef __svr4__
+# define __svr4__ /* use all System V Releae 4 defines below */
+# endif
+# define SYS5SIGNALS 1 /* SysV signal semantics -- reset on each sig */
+# define HASSETSID 1 /* has Posix setsid(2) call */
+# define SFS_TYPE SFS_USTAT /* use System V ustat(2) syscall */
+# define GIDSET_T gid_t
+# undef WIFEXITED
+# undef WEXITSTATUS
+# define NAMELISTMASK 0x7fffffff /* mask for nlist() values */
+# include <sys/ksym.h> /* for MIOC_READKSYM */
+#endif
+