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Annotation of GNUtools/emacs/etc/MACHINES, revision 1.1

1.1     ! root        1: This is a list of the status of GNU Emacs on various machines and systems.
        !             2: Last updated 18 Oct 1992.
        !             3: 
        !             4: Systems:
        !             5:   For each type of system, the name of the appropriate s- header file
        !             6:   is given.
        !             7: 
        !             8: Berkeley 4.1 (s-bsd4-1.h)
        !             9: 
        !            10:   Works on vaxes.
        !            11: 
        !            12: Berkeley 4.2 (s-bsd4-2.h)
        !            13: 
        !            14:   Works on several machines.
        !            15: 
        !            16: Berkeley 4.3 (s-bsd4-3.h)
        !            17: 
        !            18:   Works, on Vaxes at least.
        !            19: 
        !            20: Microport
        !            21: 
        !            22:   See under "Intel 386".
        !            23: 
        !            24: Solaris (s-sol2.h)
        !            25: 
        !            26:   Changes merged, and may work.
        !            27: 
        !            28: System V rel 0 (s-usg5-0.h)
        !            29: 
        !            30:   Works, on Vaxes and 3bxxx's.
        !            31:   There are some problems in 18.37 due to shortnames/cccp problems:
        !            32:   use the emacs 17 cpp if you have it.
        !            33: 
        !            34: System V rel 2 (s-usg5-2.h)
        !            35: 
        !            36:   Works on various machines.
        !            37:   On some (maybe all) machines the library -lPW exists and contains
        !            38:   a version of `alloca'.  On these machines, to use it, put
        !            39:      #define HAVE_ALLOCA
        !            40:      #define LIB_STANDARD -lPW -lc
        !            41:   in the m-...h file for the machine.
        !            42: 
        !            43:   If you find that the character Meta-DEL makes Emacs crash,
        !            44:   find where function init_sys_modes in sysdep.c sets sg.c_cc[VQUIT]
        !            45:   and make it store 7 there.  I have as yet no evidence of whether
        !            46:   this problem, known in HP-UX, exists in other system V versions.
        !            47: 
        !            48:   If you are compiling to work with X11 release 4, you may need
        !            49:   to define HAVE_RANDOM in config.h.
        !            50: 
        !            51: System V rel 2.2 (s-usg5-2-2.h)
        !            52: 
        !            53:   In 5.2.2 AT&T undid, incompatibly, their previous incompatible
        !            54:   change to the way the nlist library is called.  A different s- file
        !            55:   is used to enable the other interface.
        !            56: 
        !            57:   They call themselves the right choice--can't they choose?
        !            58: 
        !            59:   Emacs version 18 unexec is currently not working properly
        !            60:   on 5.2.2.  Nobody knows why yet.  A workaround is to define
        !            61:   NO_REMAP.  It is not yet known whether this applies to all
        !            62:   machines running 5.2.2.
        !            63: 
        !            64:   If you are compiling to work with X11 release 4, you may need
        !            65:   to define HAVE_RANDOM in config.h.
        !            66: 
        !            67: System V rel 3 (s-usg5-3.h)
        !            68: 
        !            69:   Some versions of this system support ptys and BSD-style sockets.
        !            70:   On such systems, you should define HAVE_PTYS and HAVE_SOCKETS in config.h.
        !            71: 
        !            72:   If you are compiling to work with X11 release 4, you may need
        !            73:   to define HAVE_RANDOM in config.h.
        !            74: 
        !            75:   If you want to link Emacs with shared libraries, define
        !            76:   USG_SHARED_LIBRARIES.
        !            77: 
        !            78: System V rel 4 (s-usg5-4.h)
        !            79: 
        !            80:   Supported, including shared libraries for ELF.  pty's work now.
        !            81: 
        !            82:   The standard C preprocessor generates xmakefile incorrectly.  However,
        !            83:   /lib/cpp will work, so use `make CPP=/lib/cpp' in the `src' subdirectory.
        !            84: 
        !            85:   Versions 3 and earlier of V.4, on the Intel 386 and 860, had
        !            86:   problems in the X11 libraries.  These prevent Emacs from working
        !            87:   with X.  You can use Emacs with X provided your copy of X is based
        !            88:   on X11 release 4 or newer.  Unfortunately, the only way you can tell
        !            89:   for certain whether your X11 library is new enough is to try
        !            90:   compiling Emacs to use X.  If xemacs runs, your X11 library is new
        !            91:   enough.
        !            92: 
        !            93:   In this context, GSV4 and GSV4i are alternate names for X11R4.
        !            94:   OL2.* is X11R3 based.  OL3 is in between X11R3 and X11R4, and may or
        !            95:   may not work, depending on who made the Unix system.  If the library
        !            96:   libXol is part of the X distribution, then you have X11R3 and Emacs
        !            97:   won't work with X.
        !            98: 
        !            99:   Most versions of V.4 support sockets.  If `/usr/lib/libsocket.so'
        !           100:   exists, your system supports them.  If yours does not, you must add
        !           101:   #undef HAVE_SOCKETS in config.h, aftern the inclusion of s-usg5-4.h.
        !           102:   (Any system that supports Internet should implement sockets.)
        !           103: 
        !           104: Ultrix (s-bsd4-3.h)
        !           105: 
        !           106:   Recent versions of Ultrix appear to support the features of Berkeley 4.3.
        !           107:   Ultrix was at the BSD 4.2 level for a long time after BSD 4.3 came out.
        !           108: 
        !           109:   Ultrix 3.0 has incompatibilities in its X library if you have the
        !           110:   Ultrix version of X (UWS version 2.0).  To solve them, you need to
        !           111:   prevent XvmsAlloc.o in Xlib from being used.  Israel Pinkas says:
        !           112: 
        !           113:     I added the following lines to config.h after the X defines:
        !           114: 
        !           115:     #if defined(ultrix) && defined(X11)
        !           116:     #define OBJECTS_SYSTEM calloc.o
        !           117:     #endif
        !           118: 
        !           119:     Then I ran the following:
        !           120: 
        !           121:     ar x /usr/lib/libc.a calloc.o
        !           122: 
        !           123:   The problem is said to be gone in UWS version 2.1.
        !           124: 
        !           125:   Ultrix 4.1 has moved the file X11/X10.h into mit/X11/X10.h.
        !           126: 
        !           127: Uniplus 5.2 (s-unipl5-2.h)
        !           128: 
        !           129:   Works, on Dual machines at least.
        !           130: 
        !           131: VMS (s-vms4-0.h, s-vms4-2.h, s-vms4-4.h, s-vms5-5.h)
        !           132: 
        !           133:   Works except for certain features (directory listing, dired,
        !           134:   sending and receiving mail) that use synchronous subprocesses.
        !           135:   (These will work in Emacs 19.)
        !           136:   s-vms5-5.h may be right for some earlier versions; please let us know
        !           137:   what happens when you try it in VMS versions 5.0 thru 5.4.
        !           138: 
        !           139:   Note that Emacs for VMS is usually distributed in a special
        !           140:   VMS distribution.  See the file ../VMSINSTALL for info on moving
        !           141:   Unix distributions to VMS, and other VMS-related topics.
        !           142: 
        !           143: Xenix
        !           144: 
        !           145:   Should work in 18.50, but you will need to edit the files
        !           146:   etc/Makefile and src/ymakefile
        !           147:   (see the comments that mention "Xenix" for what to change.)
        !           148:   Compiling Emacs with -O is said not to work.
        !           149: 
        !           150:   If you want Emacs to work with Smail (installed as /usr/bin/smail)
        !           151:   then add the line   #define SMAIL  to config.h.
        !           152: 
        !           153:   The file etc/XENIX suggests some useful things to do to Xenix
        !           154:   to make the Emacs meta key work.
        !           155: 
        !           156: Machines:
        !           157:   For each type of machine, the names of the m- and s- header files
        !           158:   are given.
        !           159: 
        !           160: Alliant FX/80 (m-alliant4.h or m-alliant.h or m-alliant1.h;
        !           161:               s-bsd4-2.h or s-bsd4-3.h)
        !           162: 
        !           163:   There are reports of bugs in the Alliant compiler
        !           164:   that prevent compiling Emacs 18.57.
        !           165:   No word on how to get around them.  Perhaps using GCC will work.
        !           166:   A work-around is installed in src/dispnew.c in 18.58 for a compiler bug.
        !           167: 
        !           168:   18.52 worked on system version 4.  Previous Emacs versions were
        !           169:   known to work on previous system versions.
        !           170: 
        !           171:   Use m-alliant1.h on version 1 of their operating system
        !           172:   and use m-alliant.h on version 2 or 3.
        !           173:   Use m-alliant4.h on version 4 and above.
        !           174: 
        !           175:   Use s-bsd4-3.h with system version 5 and above.
        !           176: 
        !           177: Alliant FX/2800 (m-all2800.h; s-bsd4-3.h)
        !           178: 
        !           179:   Known to work with 18.58 and OS version 2.2, compiler version 1.3.
        !           180: 
        !           181: Altos 3068 (m-altos.h; s-usg5-2.h)
        !           182: 
        !           183:   18.52 is said to work, provided you don't compile unexec.c with -O.
        !           184: 
        !           185: Amdahl UTS (m-amdahl.h; s-usg5-3.h)
        !           186: 
        !           187:   Support for a newer system version, and X Windows, merged in 18.58.
        !           188:   (Some people report that s-usg5-2.h worked better than s-usg5-3.h
        !           189:   for 18.57.)
        !           190: 
        !           191:   The 5.2u370 compiler is so brain damaged that it is not
        !           192:   even worth trying to use it.  Success was obtained with the
        !           193:   uts native C compiler on uts version 5.2.5.
        !           194: 
        !           195: Apollo running Domain (m-apollo.h; s-bsd4-2.h)
        !           196: 
        !           197:   18.52 works, to some extent.
        !           198:   Code for dumping Emacs has been written, but we cannot
        !           199:   distribute it yet.
        !           200:   There are reports of bugs in cc -O on this system.
        !           201: 
        !           202:   In etc/Makefile, don't expect emacsclient and server to
        !           203:   compile.  You might want to remove them from your makefile.
        !           204: 
        !           205:   Supposedly something in dired.c runs into a compiler bug.
        !           206:   Paraphrasing the statement should avoid the problem.
        !           207:   I havenot yet received word as to the exact statement this is.
        !           208: 
        !           209: AT&T 3b2, 3b5, 3b15, 3b20 (m-att3b.h; s-usg5-2-2.h)
        !           210: 
        !           211:   Emacs will probably not work with certain kernel constants too small. 
        !           212: 
        !           213:   In param.h CDLIMIT should be at least (1L << 12) in order to allow 
        !           214:   processes to write up to 2 Mbyte files.  If it's too small,
        !           215:   you can perhaps fix it using the file `ulimit.hack' in this directory.
        !           216: 
        !           217:   Note that for V.3.1 and later releases, this parameter is configurable
        !           218:   by normal means in /etc/master.d/kernel; examine that file for the
        !           219:   symbol CDLIMIT or ULIMIT, and raise it by several powers of 2.  Then
        !           220:   do normal kernel rebuild things via "cd /boot; mkboot -k KERNEL" and so
        !           221:   forth.  Do not use ulimit.hack if you have V.3.1 or later.
        !           222: 
        !           223:   In seg.h NSEGP and STACKSEG should be at least 16 and 4 respectively
        !           224:   to allow processes with total size of up to 2Mbytes.
        !           225:   However, I'm told it is unlikely this would fail to be true.
        !           226: 
        !           227:   The MAXMEM may also prevent Emacs from running.  The file
        !           228:   3B-MAXMEM in this directory explains how to increase MAXMEM.
        !           229: 
        !           230: AT&T 7300 or 3b1 (m-7300.h; s-usg5-2-2.h)
        !           231: 
        !           232:   18.52 seems to work.  If you have strange troubles with dumping Emacs,
        !           233:   delete the last few lines from m-7300.h and recompile.  These lines
        !           234:   are supposed to produce a sharable executable.
        !           235: 
        !           236:   m-7300.h defines SHORTNAMES because operating system versions
        !           237:   older than 3.5 did not support long symbol names.  Version 3.5 does
        !           238:   support them, so you can remove the #define SHORTNAMES in that version.
        !           239: 
        !           240: Aviion (m-aviion.h; s-dgux.h)
        !           241: 
        !           242:   Changes merged in 18.58.
        !           243: 
        !           244: Bull DPX/2 models 2nn or 3nn (m-dpx2-200.h or m-dpx2-300.h; s-usg5-3.h)
        !           245: 
        !           246:   Should work in 18.58 except that there is a report of
        !           247:   Emacs terminating mysteriously if run in the background 
        !           248:   using its own X window and the invoking process
        !           249:   terminates. 
        !           250: 
        !           251:   Be sure to read m-dpx2.h for instructions as to how to deal
        !           252:   with optional packages such as INET and X Windows.
        !           253: 
        !           254: CCI 5/32, 6/32
        !           255: 
        !           256:   See "Tahoe".
        !           257: 
        !           258: Celerity (m-celerity.h; s-bsd4-2.h)
        !           259: 
        !           260:   Version 18.49 works.
        !           261: 
        !           262: Convex (m-convex.h; s-bsd4-3.h)
        !           263: 
        !           264:   18.58 works.
        !           265:   Use "make CC='cc -pcc'" to avoid problems creating ymakefile from xmakefile.
        !           266: 
        !           267: Cydra 5 (m-cydra5.h; s-usg5-3.h)
        !           268: 
        !           269:   18.51 worked in one version of their operating system but stopped
        !           270:   working in a newer version.  This has not been fixed.
        !           271: 
        !           272: Data General
        !           273: 
        !           274:   See aviion.
        !           275: 
        !           276: DECstation (m-pmax.h; s-bsd4-3.h or s-osf1.h)
        !           277: 
        !           278:   OSF1 support merged in 18.59.
        !           279: 
        !           280:   See under Ultrix for problems using X windows
        !           281:   on Ultrix.  Note that this is a MIPS machine.
        !           282:   s-bsd4-3.h is said to work ok with Ultrix 4.1.
        !           283: 
        !           284:   For Ultrix versions prior to 4.0, you may need to delete
        !           285:   the definition of START_FILES from m-pmax.h.
        !           286: 
        !           287: Dual running System V (m-dual.h; s-usg5-2.h)
        !           288: 
        !           289:   As of 17.46, this works except for a few changes
        !           290:   needed in unexec.c.
        !           291: 
        !           292: Dual running Uniplus (m-dual.h; s-unipl5-2.h)
        !           293: 
        !           294:   Works, as of 17.51.
        !           295: 
        !           296: Elxsi 6400 (m-elxsi; s-usg5-2.h)
        !           297: 
        !           298:   18.36 required one small change that's installed in 18.38.
        !           299: 
        !           300:   m-elxsi.h currenty specifies CANNOT_DUMP.
        !           301:   The Elxsi can in principle dump, but the necessary changes to
        !           302:   unexec, which involve byte-swapping, were too ugly to install.
        !           303:   If someone submits simple code that supports dumping on the Elxsi,
        !           304:   it can be installed and CANNOT_DUMP can be turned off.
        !           305: 
        !           306: Encore machine (m-ns16000.h; s-umax.h)
        !           307: 
        !           308:   This machine bizarrely uses 4.2BSD modified to use the COFF format
        !           309:   for object files.  Works (as of 18.40).  For the APC processor you
        !           310:   must enable two lines at the end of s-umax.h, which are commented
        !           311:   out in the file as distributed.
        !           312: 
        !           313:   WARNING: If you compile Emacs with the "-O" compiler switch, you
        !           314:   must also use the "-q enter_exits" switch so that all functions have
        !           315:   stack frames.  Otherwise routines that call `alloca' all lose.
        !           316: 
        !           317:   A kernel bug in some system versions causes input characters to be lost
        !           318:   occasionally.
        !           319: 
        !           320: Encore running MACH.
        !           321: 
        !           322:   This does not yet work.
        !           323: 
        !           324: GEC 93 (m-gec93.h; s-usg5-2.h?)
        !           325: 
        !           326:   Changes are partially merged in version 18, but
        !           327:   certainly require more work.
        !           328: 
        !           329: Gould (m-gould.h; s-bsd4-2.h or s-bsd4-3.h)
        !           330: 
        !           331:   18.36 worked on versions 1.2 and 2.0 of the operating system.
        !           332: 
        !           333:   On UTX/32 2.0, use s-bsd4-3.h.
        !           334: 
        !           335:   On UTX/32 1.2 and UTX/32S 1.0, use s-bsd4-2.h and note that compiling 
        !           336:   etc/sorted-doc tickles a compiler bug:  remove the -g flag to cc in the 
        !           337:   makefile.
        !           338: 
        !           339:   UTX/32 1.3 has a bug in the bcopy library routine.  Fix it by 
        !           340:   #undef BSTRING in m-gould.h.
        !           341: 
        !           342: HP 9000 series 200 or 300 (m-hp9000s300.h; s-hpux7.h, s-hpux8.h or s-bsd4-3.h)
        !           343: 
        !           344:   Version 18 works.
        !           345:   These machines are 68000-series CPUs running HP-UX
        !           346:   (a derivative of sysV with some BSD features) or BSD 4.3 ported by Utah.
        !           347:   The choice of s- file determines which system Emacs is built for.
        !           348: 
        !           349:   If you are running HP-UX release 8.0 or later, you need the optional
        !           350:   "C/ANSI C" software in order to build Emacs (older releases of HP-UX
        !           351:   do not require any special software).  If the file "/etc/filesets/C"
        !           352:   exists on your machine, you have this software, otherwise you do not.
        !           353: 
        !           354:   Series 200 HPUX runs Emacs only if it has the "HP-UX upgrade".
        !           355: 
        !           356:   The series 500 has a seriously incompatible memory architecture
        !           357:   which relocates data in memory during execution of a program,
        !           358:   and support for it would be difficult to implement.
        !           359: 
        !           360:   Note that HP has used two incompatible assembler syntaxes,
        !           361:   and has recently changed the format of C function frames.
        !           362:   src/crt0.c and src/alloca.s have been conditionalised for the new
        !           363:   assembler and new function-entry sequence.  You may need to define
        !           364:   OLD_HP_ASSEMBLER if you are using an older hpux version.  If you
        !           365:   have an official (bought from HP) series 300 machine you have
        !           366:   the new assembler.  Kernels that are 5.+ or later have new
        !           367:   assembler.  A Series 200 that has been upgraded to a 68010
        !           368:   processor and a 5.+ kernel has the new compiler.
        !           369: 
        !           370:   Define C_SWITCH_MACHINE to be +X to make a version of Emacs that
        !           371:   runs on both 68010 and 68020 based hp-ux's.
        !           372: 
        !           373:   Define HPUX_68010 if you are using the new assembler, for
        !           374:   a system that has a 68010 without a 68881.  This is to say,
        !           375:   a s200 (upgraded) or s310.
        !           376: 
        !           377:   Define the symbol HPUX_NET if you have the optional network features
        !           378:   that include the `netunam' system call.  This is refered to as
        !           379:   Network Services (NS/9000) in HP literature.
        !           380: 
        !           381:   If you are compiling to work with X11 release 4, you may need
        !           382:   to define HAVE_RANDOM in config.h.
        !           383: 
        !           384: HP 9000 series 700 or 800 (Spectrum) (m-hp9000s800.h; s-hpux7.h or s-hpux8.h)
        !           385: 
        !           386:   These files support HP's Precision Architecture machines
        !           387:   running HP-UX.  Version 18.58 should work on the 700 and the 800.
        !           388:   Use s-hpux7.h for HPUX version 7 or earlier,
        !           389:   and s-hpux8.h for HPUX version 8.
        !           390:   If you are running HP-UX release 8.0 or later, you need the optional
        !           391:   "C/ANSI C" software in order to build Emacs (older releases of HP-UX
        !           392:   do not require any special software).  If the file "/etc/filesets/C"
        !           393:   exists on your machine, you have this software, otherwise you do not.
        !           394: 
        !           395:   HAVE_X_MENU works, but you may need to modify oldXMenu/Makefile
        !           396:   to compile insque.c.
        !           397: 
        !           398:   If you compile with MIT's X11R5, rather than HP's version, 
        !           399:   then you may need to add the following to config.h:
        !           400: 
        !           401:    #define srandom srand
        !           402:    #define random rand
        !           403: 
        !           404: High Level Hardware Orion (m-orion.h; s-bsd4-2.h)
        !           405: 
        !           406:   This is the original microprogrammed hardware.
        !           407:   m- file ought to work.
        !           408: 
        !           409: High Level Hardware Orion 1/05 (m-orion105.h; s-bsd4-2.h)
        !           410: 
        !           411:   Changes merged in 18.52.  This is the one with the Clipper cpu.
        !           412:   Note that systems which lack NFS may need LOAD_AVE_TYPE changed to `double'.
        !           413: 
        !           414:   In 18.58, trouble was reported with X windows: XrmGetResource was
        !           415:   reported undefined in the library.  You may need to change
        !           416:   XT_GetDefaults in x11term.c to make it link.  If so, please
        !           417:   send a bug report saying exactly what change was needed.
        !           418: 
        !           419: IBM PS2 (m-ibmps2-aix.h; s-usg5-2-2.h or s-usg5-3.h)
        !           420: 
        !           421:   Changes mostly merged in 18.55.  You may need to put an #ifndef AIX
        !           422:   conditional around the definition of closedir in sysdep.c, and
        !           423:   perhaps delete the #include of sioctl.h.  You may need to copy
        !           424:   /usr/lib/samples/hft/hftctl.c to the Emacs src directory.
        !           425: 
        !           426:   Use s-usg5-3.h on AIX 1.2.
        !           427:   s-usg5-2-2.h should work on either AIX 1.1 or 1.2, but may not work with
        !           428:   certain new X window managers, and may be suboptimal.
        !           429: 
        !           430: IBM RS/6000 (m-ibmrs6000.h; s-aix3-1.h or s-aix3-2.h)
        !           431: 
        !           432:   Changes merged in 18.56.  Note that for installation on AIX you must
        !           433:   use `make install.aix' rather than just `make'.  Use s-aix3-2.h
        !           434:   on AIX 3.2 also.
        !           435: 
        !           436: IBM RT/PC (m-ibmrt.h or m-ibmrt-aix.h; s-bsd4-3.h or s-usg5-2-2.h)
        !           437: 
        !           438:   18.52 works on both operating systems.
        !           439:   Use s-bsd-4-3.h for the 4.3-like system AOS, and s-usg5-2-2.h for AIX.
        !           440: 
        !           441:   On BSD, if you have trouble, try compiling with a different compiler.
        !           442: 
        !           443:   On AIX, the file /usr/lib/samples/hft/hftctl.c must be compiled into
        !           444:   hftctl.o, with this result left in the src directory (hftctl.c is
        !           445:   part of the standard AIX distribution).
        !           446: 
        !           447:   window.c must not be compiled with -O on AIX.
        !           448: 
        !           449: Integrated Solutions `Optimum V' (m-isi-ov.h; s-bsd4-2.h or s-bsd4-3.h)
        !           450: 
        !           451:   18.52 said to work on some sort of ISI machine.
        !           452:   Version 18.45 worked (running on a Optimum V (VME bus, 68020)
        !           453:   BSD 4.2 (3.05e) system).  18.42 is reported to work on
        !           454:   a Qbus 68010 system.  Has not been tried on `WorkStation' `Cluster
        !           455:   Compute Node' `Cluster WorkStation' or `Server Node'  (Love the
        !           456:   StudLYCaps) 
        !           457: 
        !           458:   Compilation with -O is rumored to break something.
        !           459: 
        !           460:   On recent system versions, you may need to undefine the macro UMAX
        !           461:   in etc/loadst.c and src/getpagesize.h.  They stupidly defined this
        !           462:   in a system header file, which confuses Emacs (which thinks that UMAX
        !           463:   indicates the Umax operating system).
        !           464: 
        !           465: Integrated Solutions 386 (m-is386.h; ??)
        !           466: 
        !           467:   Configuration file present in 18.57.
        !           468: 
        !           469: Intel 80386 (m-intel386.h; s-bsd4-2.h, s-usg5-2-2.h, s-usg5-3.h, s-esix.h,
        !           470:             s-386ix.h, s-isc2-2.h, s-isc3-0.h, s-sco3-2-2.h, s-sco3-2-4.h,
        !           471:             or s-xenix.h)
        !           472: 
        !           473:   18.59 should support a wide variety of operating systems.
        !           474:   Use s-isc2-2.h for Interactive 386/ix version 2.2
        !           475:   and s-isc3-0.h for versions 3.0 and 3.2.
        !           476:   Use s-386ix.h for prior versions.
        !           477:   Use s-esix.h for Esix.
        !           478: 
        !           479:   Use s-sco3-2-4.h for version 3.2.4, and s-sco3-2-2.h for version 3.2.2
        !           480:      (but it only makes a difference if you compile Emacs for X windows).
        !           481:   You may have to compile the cpp that comes with Emacs
        !           482:   and use that to preprocess src/ymakefile to get src/xmakefile.
        !           483:   s-sco3-2-1.h may work on SCO 3.2.1, but see the instructions in
        !           484:   that file for other changes you need to make.
        !           485: 
        !           486:   If you are using Xenix, see notes above under Xenix.
        !           487: 
        !           488:   Some sysV.3 systems seem to have bugs in `opendir';
        !           489:   for them, alter `config.h' to define NONSYSTEM_DIR_LIBRARY
        !           490:   and undefine SYSV_SYSTEM_DIR.
        !           491: 
        !           492:   If you use optimization on V.3, you may need the option -W2,'-y 0'
        !           493:   to prevent certain faulty optimization.  Otherwise, fns.c won't work.
        !           494: 
        !           495:   On 386/ix, to link with shared libraries, add #define USG_SHARED_LIBRARIES
        !           496:   to config.h.
        !           497: 
        !           498:   On one V.4 system, it was necessary to define LIBS_TERMCAP as -ltermcap.
        !           499: 
        !           500:   Versions 3 and earlier of V.4 supposedly have problems
        !           501:   in the X11 libraries that prevent Emacs from working with X.
        !           502:   Version 4 of V.4 is said to have fixed this problem.  See the
        !           503:   entry for System V Release 4, above.  Similar problems occur on
        !           504:   SCO systems and perhaps also on ISC systems.  There is no known
        !           505:   remedy except to get a different system.
        !           506: 
        !           507:   There is no consistency in the handling of certain system header files
        !           508:   on V.3.
        !           509: 
        !           510:   Some versions have sys/sioctl.h, and require it in sysdep.c.
        !           511:   But some versions do not have sys/sioctl.h.
        !           512:   For a given version of the system, this may depend on whether you have
        !           513:   X Windows or TCP/IP.  Define or undefine NO_SIOCTL_H in config.h
        !           514:   according to whether you have the file.
        !           515: 
        !           516:   Likewise, some versions have been known to need sys/ttold.h, sys/stream.h,
        !           517:   and sys/ptem.h included in sysdep.c.  If your system has these files,
        !           518:   try defining NEED_PTEM_H in config.h if you have trouble without it.
        !           519: 
        !           520:   You may find that adding -I/usr/X/include or -I/usr/netinclude or both
        !           521:   to CFLAGS avoids compilation errors on certain systems.
        !           522: 
        !           523:   Some versions convince sysdep.c to try to use `struct tchars'
        !           524:   but define `struct tc' instead; add `#define tchars tc'
        !           525:   to config.h to solve this problem.
        !           526:   Some systems have problems that can be solved by inserting
        !           527:     #undef TIOCGETC
        !           528:   in sysdep.c, near the place where this is done for XENIX.
        !           529: 
        !           530: Intel 860 (m-intel860.h; s-usg5-4.h)
        !           531: 
        !           532:   Supposed to work in 18.58.  See the notes for System V Release 4,
        !           533:   above, for notes on using X windows and using sockets.
        !           534: 
        !           535: Iris 4D (m-iris4d.h; s-irix3-3.h or s-irix4-0.h)
        !           536: 
        !           537:   18.58 is known to work on Silicon Graphics 4D series machines
        !           538:   with IRIX 3.3 or IRIX 4.0.
        !           539: 
        !           540:   Most irix3.3 systems do not have an ANSI C compiler, but a few do.
        !           541:   If you are using the ANSI C compiler, you may need to add
        !           542:       #define C_SWITCH_MACHINE -cckr
        !           543:   to config.h.
        !           544: 
        !           545:   There is a bug in IRIX that can sometimes leave ptys owned by
        !           546:   root with a permission of 622.  This causes malfunctions in use
        !           547:   of subprocesses of Emacs.  This may be fixed in IRIX 4.0.5.
        !           548: 
        !           549: Iris 2500 Turbo (m-irist.h; s-iris3-5.h or s-iris3-6.h)
        !           550: 
        !           551:   18.49 works.  Use s-iris3-6.h for system versions 3.6 and up.
        !           552:   s-iris3-5.h is said to work with system version 2.5.
        !           553:   Note that the 3030 is the same machine as this.
        !           554: 
        !           555: Macintosh
        !           556: 
        !           557:   We are boycotting Apple because of Apple's efforts to take away
        !           558:   our freedom to write compatible imitations of existing software.
        !           559:   If you value your freedom to write such programs, we urge you
        !           560:   not to buy from Apple, not to develop software for Apple, and
        !           561:   certainly not to accept a job with Apple.
        !           562: 
        !           563:   See the file APPLE in this directory for more information.
        !           564: 
        !           565: Masscomp (m-masscomp.h; s-rtu.h)
        !           566: 
        !           567:   18.36 worked on a 5500DP running RTU v3.1a and compiler version 3.2
        !           568:   with minor fixes that are included in 18.37.  However, bizarre behavior
        !           569:   was reported for 18.36 on a Masscomp (model and version unknown but probably
        !           570:   a 68020 system).  The report sounds like a compiler bug.
        !           571: 
        !           572:   A compiler bug affecting statements like 
        !           573:     unsigned char k; unsigned char *p;... x = p[k];
        !           574:   has been reported for "C version 1.2 under RTU 3.1".  We do not wish
        !           575:   to take the time to install the numerous workarounds required to
        !           576:   compensate for this bug; go complain to Masscomp.
        !           577: 
        !           578:   For RTU version 3.1, define FIRST_PTY_LETTER to be 'p' in s-rtu.h
        !           579:   (or #undef and redefine it in config.h) so that ptys will be used.
        !           580: 
        !           581:   GNU Emacs is said to have no chance of compiling on RTU versions
        !           582:   prior to v3.0.
        !           583: 
        !           584: Megatest (m-mega68.h; s-bsd4-2.h)
        !           585: 
        !           586:   Emacs 15 worked; do not have any reports about Emacs 16 or 17
        !           587:   but any new bugs are probably not difficult.
        !           588: 
        !           589: Mips (m-mips.h or m-mips4.h; s-usg5-2-2.h, s-bsd4-3.h)
        !           590: 
        !           591:   Changes merged in 18.39.  Some fixes in 18.56.
        !           592: 
        !           593:   Use m-mips4.h for RISCOS version 4; use s-bsd4-3.h with the BSD world.
        !           594: 
        !           595:   If you are compiling with GCC, then you must run fixincludes;
        !           596:   the alternative of using -traditional won't work because
        !           597:   the definition of SIGN_EXTEND_CHAR uses the keyword `signed'.
        !           598: 
        !           599:   If the SYSV world is the default, then you probably need the following
        !           600:   line in etc/Makefile:
        !           601: 
        !           602:     CFLAGS= -g -systype bsd43
        !           603: 
        !           604:   Some operating systems on MIPS machines give SIGTRAP for division by
        !           605:   zero instead of the usual signals.  The only real solution is to fix
        !           606:   the system to give a proper signal.
        !           607: 
        !           608:   In the meantime, you can change init_data in data.c if you wish.
        !           609:   Change it to handle SIGTRAP as well as SIGFPE.  But this will have a
        !           610:   great disadvantage: you will not be able to run Emacs under a
        !           611:   debugger.  I think crashing on division by zero is a lesser problem.
        !           612: 
        !           613:   Note that the proper m- file for the Decstation is m-pmax.h.
        !           614: 
        !           615: Motorola Delta 147 (m-delta.h; s-usg5-3.h)
        !           616:  
        !           617:   m- file added in version 18.56.
        !           618: 
        !           619: Motorola Delta 187 (m-delta88k.h; s-usg5-3.h)
        !           620: 
        !           621:   m- file added in version 18.58.
        !           622:   HAVE_X_MENU may work if you modify oldXMenu/Makefile to compile insque.c.
        !           623:  
        !           624: National Semiconductor 32000 (m-ns32000.h; s-usg5-2.h)
        !           625: 
        !           626:   This is for a complete machine from National Semiconductor,
        !           627:   running Genix.  Changes merged in version 19.
        !           628: 
        !           629: NCR Tower 32 running System V release 2 (m-tower32.h; s-usg5-2-2.h)
        !           630: 
        !           631:   Works as of 17.56.  If you change src/ymakefile so that CFLAGS includes
        !           632:   C_OPTIMIZE_SWITCH rather than C_DEBUG_SWITCH, check out the comments
        !           633:   in src/m-tower32.h about this.
        !           634: 
        !           635:   There is a report that compilation with -O did not work with 18.54.
        !           636: 
        !           637: NCR Tower 32 running System V release 3 (m-tower32v3.h; s-usg5-3.h)
        !           638: 
        !           639:   Works as of 18.56.  If you change src/ymakefile so that CFLAGS includes
        !           640:   C_OPTIMIZE_SWITCH rather than C_DEBUG_SWITCH, and do not use gcc, check 
        !           641:   out the comments in src/m-tower32v3.h about this.
        !           642: 
        !           643: NeXT (m-next.h; s-mach2.h)
        !           644: 
        !           645:   Changes merged in 18.59.
        !           646: 
        !           647: Nixdorf Targon 31 (m-targon31.h; s-usg5-2-2.h)
        !           648: 
        !           649:   Changes merged in 18.56 may work.
        !           650:   It may be necessary to define C_ALLOCA in m-targon31.h
        !           651:   and it may be necessary to remove alloca from libc.a.
        !           652:   (The alloca in libc.a is said to be broken.)
        !           653:   Please report to the Foundation what works.
        !           654: 
        !           655:   Note that the "Targon 35" is really a Pyramid.
        !           656: 
        !           657: Nu (TI or LMI) (m-nu.h; s-usg5-2.h)
        !           658: 
        !           659:   Version 18 is believed to work.
        !           660: 
        !           661: pfa50 (m-pfa50.h; s-usg5-3.h)
        !           662: 
        !           663:   Changes mostly merged in 18.59.
        !           664: 
        !           665: Plexus (m-plexus.h; s-usg5-2.h)
        !           666: 
        !           667:   Works as of 17.56.
        !           668: 
        !           669: Pmax, Mips from DEC (m-pmax.h; s-bsd4-2.h)
        !           670: 
        !           671:   See under DECstation, above.
        !           672: 
        !           673: Prime EXL (m-intel386.h; s-usg5-3.h)
        !           674: 
        !           675:   18.54 should work.
        !           676: 
        !           677: Pyramid (m-pyramid.h; s-bsd4-2.h)
        !           678: 
        !           679:   18.58 seems to work on the MIServer 2/1T under OSx 5.1-910507.
        !           680:   You need to build Emacs in the Berkeley universe with
        !           681:   the `ucb' command, as in `ucb make' or `ucb build-install'.
        !           682: 
        !           683:   In OSx 4.0, it seems necessary to add the following two lines
        !           684:   to m-pyramid.h:
        !           685:      #define _longjmp longjmp
        !           686:      #define _setjmp setjmp
        !           687: 
        !           688:   In Pyramid system 2.5 there has been a compiler bug making
        !           689:   Emacs crash just after screen-splitting with Qnil containing 0.
        !           690:   A compiler that fixes this is Pyramid customer number 8494,
        !           691:   internal number 1923.
        !           692: 
        !           693:   Some versions of the pyramid compiler get fatal
        !           694:   errors when the -gx compiler switch is used; if this
        !           695:   happens to you, change src/m-pyramid.h to define
        !           696:   C_DEBUG_SWITCH with an empty definition.
        !           697: 
        !           698:   Some old system versions may require you to define PYRAMID_OLD
        !           699:   in when alloca.s is preprocessed, in order to define _longjmp and _setjmp.
        !           700: 
        !           701: Pyramid MIPS systems (m-pyrmips.h; s-usg5-4.h)
        !           702: 
        !           703:   Changes merged in 18.59; may work.  Dumping is not supported.
        !           704:   Use CPP=/usr/ccs/lib/cpp when running make in src.
        !           705: 
        !           706: Sequent Balance (m-sequent.h; s-bsd4-2.h)
        !           707: 
        !           708:   Emacs 18.51 should work on system version
        !           709:   3.0.  18.5[23] is said to work.  Delete some lines at the end of
        !           710:   m-sequent.h for earlier system versions.
        !           711: 
        !           712: Sequent Symmetry (m-seq386.h; s-bsd4-2.h)
        !           713: 
        !           714:   Changes merged in 18.59 for compiling with GCC.
        !           715: 
        !           716: SONY News (m-news.h; s-bsd4-2.h, or s-bsd4-3.h for system release 3)
        !           717: 
        !           718:   18.52 should work.
        !           719: 
        !           720: SONY News 3000 series (RISC NEWS) (m-news-risc.h; s-bsd4-3.h)
        !           721: 
        !           722:   Works, as of 18.56.  Note that this is a MIPS architecture machine.
        !           723: 
        !           724:   Some versions of the operating system give SIGTRAP for division by zero
        !           725:   instead of the usual signals.  This causes division by zero
        !           726:   to make Emacs crash.  The system should be fixed to give the proper signal.
        !           727:   Changing Emacs is not a proper solution, because it would prevent
        !           728:   Emacs from working under any debugger.  But you can change init_data
        !           729:   in data.c if you wish.
        !           730: 
        !           731: Stride (m-stride.h; s-usg5-2.h)
        !           732: 
        !           733:   Works (most recent news for 18.30) on their release 2.0.
        !           734:   For release 2.2, see the end of m-stride.h.
        !           735:   It may be possible to run on their V.1 system but changes
        !           736:   in the s- file would be needed.
        !           737: 
        !           738: Sun 1, 2 and 3 (m-sun1.h, m-sun2.h, m-sun3.h;
        !           739:                s-bsd4-2.h, s-sunos4-0.h or s-sunos4-1.h)
        !           740: 
        !           741:   There are three m- files for different versions of SunOS.
        !           742:   All are derived from Berkeley 4.2.  Emacs 17 has run on all of them.
        !           743:   Whether you should use m-sun1.h, m-sun2.h or m-sun3.h depends
        !           744:   on the VERSION OF THE OPERATING SYSTEM you have.
        !           745:   You will need to use m-sun3.h on Sun 2's running SunOS release 3.
        !           746: 
        !           747:   For SunOS release 4 on a Sun 2 or Sun 3, use m-sun3.h and s-sunos4-1.h.
        !           748:   (Use s-sunos4-0.h instead if using system version 4.0.*.)
        !           749:   See the file etc/SUNBUG for how to solve problems caused by bugs in
        !           750:   the "export" version of SunOS 4.
        !           751: 
        !           752:   If you get inappropriate "unknown host" errors from
        !           753:   open-network-stream, get the distribution of `bind' (the BSD
        !           754:   name-server), build libresolv.a, and link Emacs with -lresolv.  This
        !           755:   problem is due to obsolete software in the nonshared standard
        !           756:   library.
        !           757: 
        !           758:   If you want to use SunWindows, define HAVE_SUN_WINDOWS
        !           759:   in config.h to enable a special interface called `emacstool'.
        !           760:   The definition must *precede* the #include "m-sun3.h".
        !           761:   System version 3.2 is required for this facility to work.
        !           762: 
        !           763:   We recommend that you instead use the X window system, which
        !           764:   has technical advantages, is an industry standard, and is also
        !           765:   free software.
        !           766: 
        !           767:   If you are compiling for X windows, and the X window library was
        !           768:   compiled to use the 68881, then you must edit config.h according
        !           769:   the comments at the end of m-sun3.h.
        !           770: 
        !           771:   It is advisable to add  #define ForceNormalLib YES  before building
        !           772:   X11R5, to force creation of a nonshared library (as well as the
        !           773:   shared X library).  Emacs does not use shared libraries, so it
        !           774:   needs to have a nonshared X library in order to run with X.
        !           775: 
        !           776:   Note that Emacs on a Sun is not really as big as it looks.
        !           777:   As dumped, it includes around 200k of zeros between the
        !           778:   original text section and the original data section
        !           779:   (now remapped as part of the text).  These are never
        !           780:   swapped in.
        !           781: 
        !           782:   To build a single Emacs that will run on Sun 2 and Sun 3
        !           783:   HARDWARE, just build it on the Sun 2.
        !           784: 
        !           785: Sun 4 (m-sparc.h; s-bsd4-2.h or s-sunos4-0.h or s-sunos4-1.h or s-sol2.h)
        !           786: 
        !           787:   Works under Sunos 4; changes for Solaris 2 merged in Emacs 18.59.
        !           788:   You may need to use CPP=/usr/ucb/cc -E in src/Makefile on Solaris 2.
        !           789: 
        !           790:   Some people have said optimizing compilation
        !           791:   does not work; some say that -O2 (whatever that is) works
        !           792:   perhaps with a small change.
        !           793: 
        !           794:   See the entry above for the Sun 3; most of the information
        !           795:   applies to the Sun 4 as well.
        !           796: 
        !           797: Sun Roadrunner (m-sun386.h; s-sunos4-0.h)
        !           798: 
        !           799:   Changes merged in 18.51.
        !           800: 
        !           801: Tadpole (m-tad68.h; s-usg5-3.h)
        !           802: 
        !           803:   Changes merged in 18.58; minor fixes in 18.59.
        !           804: 
        !           805:   You may need to edit Makefile to change the variables LIBDIR and
        !           806:   BINDIR from /usr/local to /usr/contrib.
        !           807: 
        !           808:   To give movemail access to /usr/mail, you may need to execute
        !           809: 
        !           810:     chmod 2755 etc/movemail; chgrp mail etc/movemail
        !           811: 
        !           812: Tahoe (m-tahoe.h; s-bsd4-2.h or s-bsd4-3.h)
        !           813: 
        !           814:   18.52 known to work on some Tahoes, but a compiler bug intervenes
        !           815:   on others.  Some Emacs versions have worked in Unisys 1r4
        !           816:   (not in 1r3) and CCI I.21.
        !           817: 
        !           818:   If you have trouble compiling etc/loadst.c, turn off the definition
        !           819:   of DKSTAT_HEADER_FILE in m-tahoe.h.
        !           820: 
        !           821: Tandem Integrity S2 (m-tandem-s2.h; s-usg5-3.h)
        !           822: 
        !           823:   Changes merged in 18.56 but subprocess support is turned off.
        !           824:   You will probably want to see if you can make subprocesses work.
        !           825: 
        !           826:   You must edit etc/Makefile to define LOADLIBES = -mld.
        !           827: 
        !           828: Tektronix 16000 box (6130?) (m-ns16000.h; s-bsd4-2.h)
        !           829: 
        !           830:   Emacs 17.61 worked.
        !           831: 
        !           832: Tektronix 4300 (m-tek4300.h; s-bsd4-3.h)
        !           833: 
        !           834:   Emacs 18.58 should work.
        !           835: 
        !           836:   Depending on which linker you use, you might want to change
        !           837:   the value of TEXT_START in m-tek4300.h; though the native linker
        !           838:   does use zero, it is possible (and reasonable) to use a linker
        !           839:   that starts text elsewhere, like 0x2000.
        !           840: 
        !           841: Triton 88 (m-triton88.h; s-usg5-3.h?)
        !           842: 
        !           843:   Changes merged in 18.58.
        !           844: 
        !           845: Ustation E30 (SS5E) (m-ustation.h; s-unipl5-2.h)
        !           846: 
        !           847:   Changes merged in 18.52; don't know whether they work.
        !           848: 
        !           849: Vax running Berkeley Unix (m-vax.h; s-bsd4-1.h, s-bsd4-2.h or s-bsd4-3.h)
        !           850: 
        !           851:   Works.
        !           852: 
        !           853: Vax running Ultrix (m-vax.h; s-bsd4-2.h)
        !           854: 
        !           855:   Works.  See under Ultrix for problems using X windows on Ultrix.
        !           856: 
        !           857: Vax running System V rel 2 (m-vax.h; s-usg5-2.h)
        !           858: 
        !           859:   18.27 Works.
        !           860: 
        !           861: Vax running System V rel 0 (m-vax.h; s-usg5-0.h)
        !           862: 
        !           863:   Works as of 18.36.
        !           864: 
        !           865: Vax running VMS (m-vax.h; s-vms.h  but on VMS they are m_vax.h and s_vms.h)
        !           866: 
        !           867:   18.36 believed to work.  Addition of features is necessary to make
        !           868:   this Emacs version more usable.
        !           869: 
        !           870: Whitechapel MG1 (m-mg1.h, s-?)
        !           871: 
        !           872:   May work.  Supposedly no changes were needed except the m- file.
        !           873:   I do not know what Unix version runs on them.
        !           874: 
        !           875: Wicat (m-wicat.h; s-usg5-2.h)
        !           876: 
        !           877:   Changes merged as of 18.6; whether they work is unknown.
        !           878:   See comments in m-wicat.h for things you should change
        !           879:   depending on the system and compiler version you have.
        !           880: 
        !           881: Local variables:
        !           882: mode: text
        !           883: fill-prefix: "  "
        !           884: End:

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