This is a list of the status of GNU Emacs on various machines and systems. For each system and machine, we give the configuration name you should pass to the `configure' script to prepare to build Emacs for that system/machine. The `configure' script uses the configuration name to decide which machine and operating system description files `src/config.h' should include. The machine description files are all in `src/m', and have names similar to, but not identical to, the machine names used in configuration names. The operating system files are all in `src/s', and are named similarly. See the `configure' script if you need to know which configuration names use which machine and operating system description files. If you add support for a new configuration, add a section to this file, and then edit the `configure' script to tell it which configuration name(s) should select your new machine description and system description files. Here are the configurations Emacs is intended to work with, with the corresponding configuration names. You can postpend version numbers to operating system names (i.e. sunos4.1) or architecture names (i.e. hppa1.1). If you leave out the version number, the `configure' script will configure Emacs for the latest version it knows about. Acorn RISCiX (arm-acorn-riscix1.2) Emacs 19.29 has changes that ought to support RISCiX 1.2. Due to a bug in the RISCiX C compiler (3.4.5), emacs must be built with gcc (versions 2.5.8 onwards). In addition, you will need GNU sed and GNU make, as the RISCiX release versions of these utilities cannot cope with building emacs-19! GNU sed should be configured with: env 'DEFS=-Dgetopt=gnu_getopt -Dopterr=gnu_opterr -Doptind=gnu_optind \ -Doptarg=gnu_optarg' ./configure GNU make (3.72+) should be configured with: env 'CFLAGS=-Dgetopt=gnu_getopt -Dopterr=gnu_opterr -Doptind=gnu_optind \ -Doptarg=gnu_optarg' ./configure Emacs may be configured to use the X toolkit, by adding --with-x-toolkit to the configure command. If you do this, you will need to edit the line in src/Makefile which defines LIBW (about line 59) to read: LIBW= -lXaw_n This ensures that the non-shared widget library is used. It is unlikely that this version of emacs will work with RISCiX 1.1. Alliant (fx80-alliant-bsd): 18.52 worked on system version 4. Previous Emacs versions were known to work on previous system versions. If you are using older versions of their operating system, you may need to edit `src/config.h' to use `m/alliant1.h' (on version 1) or `m/alliant.h' (on versions 2 and 3). Alliant FX/2800 (i860-alliant-bsd) Known to work with 19.26 and OS version 2.2, compiler version 1.3. Alpha (DEC) running OSF/1 (alpha-dec-osf1, alpha-dec-linux-gnu) For OSF/1 (aka Digital Unix) version 4.0, update 386, it is reported that you need to run configure this way: configure --x-includes=/usr/include --x-libraries=/usr/shlib For 4.0 revision 564, and 4.0A and 4.0B, Emacs 20 seems to work with no special configuration options. Note that the X11 libraries on GNU/Linux systems for the Alpha are said to have bugs that prevent Emacs from working with X (as of November 1995). Altos 3068 (m68k-altos-sysv) 18.52 was said to work, provided you don't compile unexec.c with -O. Amdahl UTS (580-amdahl-sysv) Small changes for 18.38 were merged in 18.39. It is mostly working, but at last report a bug sometimes causes Emacs to grab very large amounts of memory. No fix or explanation has yet been reported. It may be possible to find this bug if you find which Emacs command it happens within and then run that command with a breakpoint set at malloc. The 5.2u370 compiler is so brain damaged that it is not even worth trying to use it. Success was obtained with the uts native C compiler on uts version 5.2.5. Apollo running X Windows (m68k-apollo-bsd) Apollo version now supports dumping. It has been tested on SR10.3 and SR10.4. It certainly requires at least SR10.0, and maybe SR10.2. Be sure to build in the BSD environment. By default, everything is compiled with the switch "-W0,-opt,2". Don't try to change this to full optimization (-O). The full optimizer (in Domain CC 6.7, 6.8 and 6.9) generates some bad code in several modules which causes the emacs window, under X, to be refreshed with each keystroke. The configuration stuff should work for the most part. However, some Domain installations may have to edit src/Makefile manually after it is created. There are too many versions of both cc and X to automate this easily. In `lib-src/Makefile', emacsclient and emacsserver compile and work fine under CC 6.9. They now probably work under other versions of the compiler, as well. The Apollo Domain CC compiler will issue quite a few warning messages, mostly complaining about incompatible pointers. In general, these are harmless and can be ignored. If you discover otherwise, please submit a bug report identifying the problem in detail. When you try to dump emacs, you may get the message ".rwdi section needs relocation." This means you are linking with some code that has compressed data sections. In some cases this comes from linking with X libraries. Try using shared X libraries instead. With some versions of Domain/OS this is as simple as removing the "-lX11" from the LIBX line in src/Makefile. When running the configure script, use the configuration name "m68k-apollo-bsd". You will also need to use the "-with-gcc=no" and "-with-x" options. Depending upon your site configuration, you may have to use other configure options, as well. Examine the INSTALL file for other configure options. Check out the file 'lisp/x-apollo.el'. To use it, add (load "x-apollo") to your .emacs file. It provides useful default Apollo function key bindings. AT&T 3b2, 3b5, 3b15, 3b20 (we32k-att-sysv) Emacs will probably not work with certain kernel constants too small. In param.h CDLIMIT should be at least (1L << 12) in order to allow processes to write up to 2 Mbyte files. This parameter is configurable by normal means in /etc/master.d/kernel; examine that file for the symbol CDLIMIT or ULIMIT, and raise it by several powers of 2. Then do normal kernel rebuild things via "cd /boot; mkboot -k KERNEL" and so forth. In seg.h NSEGP and STACKSEG should be at least 16 and 4 respectively to allow processes with total size of up to 2Mbytes. However, I'm told it is unlikely this would fail to be true. The MAXMEM may also prevent Emacs from running. The file 3B-MAXMEM in this directory explains how to increase MAXMEM. On some of these machines, you may need to define IN_SCCS_ID in config.h to make Emacs work. Supposedly you can tell whether this is necessary by checking something in /usr/include/sys/time.h; we do not know precisely what. AT&T 7300 or 3b1 (m68k-att-sysv) 18.52 worked. If you have strange troubles with dumping Emacs, delete the last few lines from `src/m/7300.h' and recompile. These lines are supposed to produce a sharable executable. `src/m/7300.h' defines SHORTNAMES because operating system versions older than 3.5 did not support long symbol names. Version 3.5 does support them, so you can remove the #define SHORTNAMES in that version. Bull DPX/2 models 2nn or 3nn (m68k-bull-sysv3) Minor fixes merged into 19.19, which should work with CC or GCC. You should compile with all the POSIX stuff: undef _SYSV and define _POSIX_SOURCE, _XOPEN_SOURCE and _BULL_SOURCE. On bos2.00.45 there is a bug that makes the F_SETOWN fcntl call enters in an infinite loop. F_SETOWN_BUG has been defined to avoid calling it. Bull DPX/20 (rs6000-bull-bosx) Version 19 works. Bull sps7 (m68k-bull-sysv2) Changes partially merged in version 19, but some fixes are probably required. CCI 5/32, 6/32 See "Tahoe". Celerity (celerity-celerity-bsd4.2) Version 18.49 worked. This configuration name is a hack, because we don't know the processor used by Celerities. If someone who uses a Celerity could get in touch with us, we can teach config.sub a better name for the configuration. Clipper (clipper-???) Version 19 has support for some brand of clipper system. If you have successfully built Emacs 19 on some sort of clipper system, let us know so we can flesh out this entry. Note that the Orion 105 is also a clipper, but some system-related parameters are different. Convex (c1-convex-bsd, c2-convex-bsd, c32-convex-bsd, c34-convex-bsd, c38-convex-bsd) Support updated and residual bugs fixed in 19.26. Cubix QBx/386 (i386-cubix-sysv) Changes merged in 19.1. Systems before 2/A/0 may fail to compile etags.c due to a compiler bug. Cydra 5 (cydra-cydrome-sysv) 18.51 worked in one version of their operating system but stopped working in a newer version. This has not been fixed. Data General Aviion (m88k-dg-dgux) 19.23 works; however, the GCC provided with DGUX 5.4R3.00 fails to compile src/emacs.c. GCC 2.5.8 does work. The 19.26 pretest was reported to work; no word on which compiler. System versions other than DGUX 5.4R3.00 have not been tested. DGUX 5.4R3.10 works with 19.29 and 19.30. DGUX R4.11 contains changes to the stdio internals and it doesn't work with versions before 20.2 without patches. 20.2 works in interactive mode but usually fails in batch mode. The problem is that using stderr in the dumped emacs usually leads to a segmentation fault. Only m88k has been tested. DECstation (mips-dec-ultrix or mips-dec-osf) This machine is the older Mips-based DECstation. Emacs should now work on the Alpha CPU. 19.25 works on Ultrix 4.2. The 19.26 pretest was reported to work on Ultrix 4.2a and on 4.4. One user reported 19.25 did not work at all with --with-x-toolkit using X11R5 patch level 10, but worked ok with X11R5 pl26. See under Ultrix for problems using X windows on Ultrix. Note that this is a MIPS machine. For Ultrix versions 4.1 or earlier, you may need to define SYSTEM_MALLOC in `src/m/pmax.h', because XvmsAlloc.o in libX11.a seems to insist on defining malloc itself. For Ultrix versions prior to 4.0, you may need to delete the definition of START_FILES from `src/m/pmax.h'. Motorola Delta 147 (m68k-motorola-sysv) The EMacs 19.26 pretest was reported to work. Motorola Delta boxes running System V/68 release 3. Tested on 147 board with SVR3V7, no X and gcc. Tested on 167 board with SVR3V7, no X, cc, gnucc and gcc. Reports say it works with X too. The installation script chooses the compiler itself. gnucc is preferred. Motorola Delta 187 (m88k-motorola-sysv, m88k-motorola-sysvr4, or m88k-motorola-m88kbcs) The 19.26 pretest was reported to run on SVR3. However, if you use --with-x-toolkit on svr3, you will have problems compiling some files because time.h and sys/time.h get included twice. One fix is to edit those files to protect against multiple inclusion. As of version 19.13, Emacs was reported to run under SYSVr3 and SYSVr4. Dual running System V (m68k-dual-sysv) As of 17.46, this worked except for a few changes needed in unexec.c. Dual running Uniplus (m68k-dual-uniplus) Worked, as of 17.51. Elxsi 6400 (elxsi-elxsi-sysv) Changes for 12.0 release are in 19.1. Dumping should work now. Encore machine (ns16k-encore-bsd) This machine bizarrely uses 4.2BSD modified to use the COFF format for object files. Works (as of 18.40). For the APC processor you must enable two lines at the end of `src/s/umax.h', which are commented out in the file as distributed. WARNING: If you compile Emacs with the "-O" compiler switch, you must also use the "-q enter_exits" switch so that all functions have stack frames. Otherwise routines that call `alloca' all lose. A kernel bug in some system versions causes input characters to be lost occasionally. Fujitsu DS/90 (sparc-fujitsu-sysv4) Changes merged in 20.3. GEC 63 (local-gec63-usg5.2) Changes are partially merged in version 18, but certainly require more work. Let us know if you get this working, and we'll give it a real configuration name. Gould Power Node (pn-gould-bsd4.2 or pn-gould-bsd4.3) 18.36 worked on versions 1.2 and 2.0 of the operating system. On UTX/32 2.0, use pn-gould-bsd4.3. On UTX/32 1.2 and UTX/32S 1.0, use pn-gould-bsd4.2 and note that compiling `lib-src/sorted-doc' tickles a compiler bug: remove the -g flag to cc in the makefile. UTX/32 1.3 has a bug in the bcopy library routine. Fix it by #undef BSTRING in `src/m/gould.h'. Version 19 incorporates support for releases 2.1 and later of UTX/32. A site running a pre-release of 2.1 should #define RELEASE2_1 in config.h. Gould NP1 (np1-gould-bsd) Version 19 supposedly works. Harris Night Hawk (m68k-harris-cxux or m88k-harris-cxux) This port was added in 19.23. The configuration actually tested was a Night Hawk 4800 running CX/UX 7.0. If you have GCC ported and want to build with it, you probably need to change things (like compiler switches) defined in the s/cxux.h file. If you have X11R6 installed in /usr/lib, configure will fail to find it and may find X11R5 instead. To work around this problem, use --x-libraries=/usr/lib when you run configure. With CX/UX 7.0 and later releases, you need to build after setting the SDE_TARGET environment variable to COFF (a port using ELF and shared libraries has not yet been done). Harris Power PC (powerpc-harris-powerunix) Patches have been merged in 19.31. Honeywell XPS100 (xps100-honeywell-sysv) Config file added in version 19. Hewlett-Packard 9000 series 200 or 300 (m68k-hp-bsd or m68k-hp-hpux or m68k-hp-netbsd) These machines are 68000-series CPUs running HP/UX (a derivative of sysV with some BSD features) or BSD 4.3 ported by Utah. The operating system suffix determines which system Emacs is built for. Series 200 HPUX runs Emacs only if it has the "HP/UX upgrade". Version 19 works under BSD. The 19.26 pretest was reported to work on HPUX 9. 19.31 works on HPUX 10.01, but there are some problems on 10.10 which have not been resolved. Emacs 19.34 works on HPUX 10.20 provided you compile with GCC; with the HP C compiler, subprocess commands do not work. On HPUX 9, Emacs sometimes crashes with SIGBUS or SIGSEGV after you delete a frame. We think this is due to a bug in the X libraries provided by HP. With the alternative X libraries in /usr/contrib/mitX11R5/lib, the problem does not happen. If you are running HP/UX release 8.0 or later, you need the optional "C/ANSI C" software in order to build Emacs (older releases of HP/UX do not require any special software). If the file "/etc/filesets/C" exists on your machine, you have this software, otherwise you do not. Note that HP has used two incompatible assembler syntaxes, and has recently changed the format of C function frames. `src/crt0.c' and `src/alloca.s' have been conditionalised for the new assembler and new function-entry sequence. You may need to define OLD_HP_ASSEMBLER if you are using an older hpux version. If you have an official (bought from HP) series 300 machine you have the new assembler. Kernels that are 5.+ or later have new assembler. A Series 200 that has been upgraded to a 68010 processor and a 5.+ kernel has the new compiler. Define C_SWITCH_MACHINE to be +X to make a version of Emacs that runs on both 68010 and 68020 based HP/UX's. Define HPUX_68010 if you are using the new assembler, for a system that has a 68010 without a 68881. This is to say, a s200 (upgraded) or s310. Define the symbol HPUX_NET if you have the optional network features that include the `netunam' system call. This is referred to as Network Services (NS/9000) in HP literature. HP 9000 series 500: not supported. The series 500 has a seriously incompatible memory architecture which relocates data in memory during execution of a program, and support for it would be difficult to implement. HP 9000 series 700 or 800 (Spectrum) (hppa1.0-hp-hpux or hppa1.1-hp-hpux or ...hpux9shr, or ...-nextstep) Use hppa1.1 for the 700 series and hppa1.0 for the 800 series machines. (Emacs may not actually care which one you use.) Support for NextSTEP was added in 19.31. Emacs 20 may work on HPUX 10. You need patch PHSS_6202 to install the Xaw and Xmu libraries. On HPUX 10.20 you may need to compile with GCC; when Emacs was compiled with HP's C compiler, HP92453-01 A.10.32.03, the subprocess features failed to work. 19.26 is believed to work on HPUX 9 provided you compile with GCC. As of version 19.16, Emacs was reported to build (using GCC) and run on HP 9000/700 series machines running HP/UX versions 8.07 and 9.01. The HP compiler is known to fail on some versions if you use +O3, but it may work with lower optimization levels. Use hppa1.1-hp-hpux9shr to use shared libraries on HPUX version 9. You may need to create the X libraries libXaw.a and libXmu.a from the MIT X distribute, and you may need to edit src/Makefile's definition of LIBXT to look like this: LIBXT= $(LIBW) -lXmu -lXt $(LIBXTR6) -lXext Some people report trouble using the GNU memory allocator under HP/UX version 9. The problems often manifest as lots of ^@'s in the buffer. We are told that these problems go away if you obtain the latest patches for the HP/UX C compiler. James J Dempsey says that this set of versions works for him: /bin/cc: HP92453-01 A.09.28 HP C Compiler /lib/ccom: HP92453-01 A.09.28 HP C Compiler HP-UX SLLIC/OPTIMIZER HP-UX.09.00.23 02/18/93 Ucode Code Generator - HP-UX.09.00.23.5 (patch) 2/18/93 For 700 series machines, the HP-UX patch needed is known as PHSS_2653. (Perhaps for 800 series machines as well; we don't know.) If you are on the Internet, you should be able to obtain this patch by using telnet to access the machine support.mayfield.hp.com and logging in as "hpslreg" and following the instructions there. Or you may be able to use this web site: HP Patch Server: http://support.mayfield.hp.com/patches/html/patches.html HP Support Line: http://support.mayfield.hp.com Please do not ask FSF for further support on this. If you have any trouble obtaining the patch, contact HP Software Support. If your buffer fills up with nulls (^@) at some point, it could well be that problem. That problem does not happen when people use GCC to compile Emacs. On the other hand, the HP compiler version 9.34 was reported to work for the 19.26 pretest. 9.65 was also reported to work. If you turn on the DSUSP character (delayed suspend), Emacs 19.26 does not know how to turn it off on HPUX. You need to turn it off manually. If you are running HP/UX release 8.0 or later, you need the optional "C/ANSI C" software in order to build Emacs (older releases of HP/UX do not require any special software). If the file "/etc/filesets/C" exists on your machine, you have this software, otherwise you do not. High Level Hardware Orion (orion-highlevel-bsd) This is the original microprogrammed hardware. Machine description file ought to work. High Level Hardware Orion 1/05 (clipper-highlevel-bsd) Changes merged in 18.52. This is the one with the Clipper cpu. Note that systems which lack NFS need LOAD_AVE_TYPE changed to `double'. C compiler has a bug; it loops compiling eval.c. Compile it by hand without optimization. HITACHI SR2001/SR2201 series (hppa1.1-hitachi-hiuxmpp) These machines are based on PA architecture running HI-UX/MPP (based on OSF1. `MPP' stands for `Massively Parallel Processor'). Emacs 19.34 is believed to work; its pretest was tested both on SR2001 (output of `uname -rv' is `00-01-BB 0') and SR2201 (`02-00 0'). The machine description file is `src/m/sr2k.h' is based on `src/m/hp800.h'. The system description file is `src/s/hiuxmpp.h' based on `src/s/osf1.h'. Note that this system doesn't use COFF. IBM PS/2 (i386-ibm-aix1.1 or i386-ibm-aix1.2) Changes merged in version 19. You may need to copy /usr/lib/samples/hft/hftctl.c to the Emacs src directory. i386-ibm-aix1.1 may not work with certain new X window managers, and may be suboptimal. IBM RS/6000 (rs6000-ibm-aix*) Emacs 19.26 is believed to work; its pretest was tested. At last report, Emacs didn't run well on terminals. Informed persons say that the tty VMIN and VTIME settings have been corrupted; if you have a fix, please send it to us. Compiling with -O using the IBM compiler has been known to make Emacs work incorrectly. It's reported that on AIX 3.2.5 with an IBM compiler earlier than 1.03.00.14, cc -O fails for some files. You need to install any PTF containing APAR #IX42810 to bring the compiler to the 1.03.00.14 level to allow optimized compiles. There are reports that IBM compiler versions earlier than 1.03.00.02 fail even without -O. However, another report said that compiler version 1.02.01.00 did work, on AIX 3.2.4, with Emacs 19.31. As of 19.11, if you strip the Emacs executable, it ceases to work. If you are using AIX 3.2.3, you may get a core dump when loading ange-ftp. You may be able to fix the problem by defining LIBS_TERMCAP as -ltermcap -lcurses. Please tell us if this fails to work. If anyone can fix the above problems, or confirm that they don't happen with certain versions of various programs, we would appreciate it. IBM RT/PC (romp-ibm-bsd or romp-ibm-aix) Use romp-ibm-bsd for the 4.2-like system and romp-ibm-aix for AIX. 19.22 is reported to work under bsd. We don't know about AIX. On BSD, if you have trouble, try compiling with a different compiler. On AIX, the file /usr/lib/samples/hft/hftctl.c must be compiled into hftctl.o, with this result left in the src directory (hftctl.c is part of the standard AIX distribution). window.c must not be compiled with -O on AIX. Integrated Solutions `Optimum V' (m68k-isi-bsd4.2 or -bsd4.3) 18.52 said to work on some sort of ISI machine. Version 18.45 worked (running on a Optimum V (VME bus, 68020) BSD 4.2 (3.05e) system). 18.42 is reported to work on a Qbus 68010 system. Has not been tried on `WorkStation' `Cluster Compute Node' `Cluster WorkStation' or `Server Node' (Love the StudLYCaps) Compilation with -O is rumored to break something. On recent system versions, you may need to undefine the macro UMAX in `lib-src/loadst.c' and `src/getpagesize.h'. They stupidly defined this in a system header file, which confuses Emacs (which thinks that UMAX indicates the Umax operating system). Intel 386 (i386-*-isc, i386-*-esix, i386-*-bsdi2, i386-*-xenix, i386-*-freebsd, i386-*-linux-gnu, i386-*-sol2.4, i386-*-sysv3, i386-intsys-sysv, i386-*-sysv4, i386-*-sysv4.2, i386-*-sysv5.3, i386-*-bsd4.2, i386-*-sco3.2v4, i386-*-bsd386, i386-*-386bsd, i386-*-msdos, i386-*-windowsnt. i386... can be replaced with i486... or i586...) In the above configurations, * means that the manufacturer's name you specify does not matter, and you can use any name you like (but it should not contain any dashes or stars). When using the ISC configurations, be sure to specify the isc version number - for example, if you're running ISC 3.0, use i386-unknown-isc3.0 as your configuration name. Use i386-*-esix for Esix; Emacs runs as of version 19.6. Use i386-*-linux-gnu for GNU/Linux systems; Emacs runs as of version 19.26. Use i386-intsys-sysv for Integrated Solutions 386 machines. It may also be correct for Microport systems. Use i386-*-sco3.2v4 for SCO 3.2v4; Emacs runs as of version 19.26. On GNU/Linux systems, Emacs 19.23 was said to work properly with libc version 4.5.21, but not with 4.5.19. If your system uses QMAGIC for the executable format, you must edit config.h to define LINUX_QMAGIC. On GNU/Linux, configure may fail to put these definitions in config.h: #define HAVE_GETTIMEOFDAY #define HAVE_MKDIR #define HAVE_RMDIR #define HAVE_XSCREENNUMBEROFSCREEN To work around the problem, add those definitions by hand. It is possible that this problem happens only with X11R6 or that newer system versions have fixed it. The 19.26 pretest was reported to work on SVR4.3 and on Freebsd. 19.29 is reported to crash when using Motif on Solaris 2.5. The reasons are not yet known. Use i386-*-bsdiN for BSDI BSD/OS version N; Emacs runs as of version 19.23. In some system versions, `make' is broken; use GNU make instead. Shell bugs in version 1.0 of BSD/OS cause configure to do the wrong thing with --with-x-toolkit; the workaround is to edit configure to run another shell such as bash. For System V release 3, use i386-*-sysv3. For System V release 4, use i386-*-sysv4. For System V release 4.2, use i386-*-sysv4.2. If you are using Xenix, see notes at end under Xenix. If you are using Esix, see notes at end under Esix. If you are using SCO Unix, see notes at end under SCO. On 386bsd, NetBSD and FreeBSD, at one time, it was necessary to use GNU make, not the system's make. Assuming it's installed as gmake, do `gmake install MAKE=gmake'. However, more recently it is reported that using the system Make on NetBSD 1.3.1 works ok. If you are using System V release 4.2, you may find that `cc -E' puts spurious spaces in `src/xmakefile'. If that happens, specify CPP=/lib/cpp as an option when you run make. There is no problem if you compile with GCC. Note that use of Linux with GCC 2.4 and the DLL 4.4 libraries requires the experimental "net 2" network patches (no relation to Berkeley Net 2). There is a report that (some version of) Linux requires including `/usr/src/linux/include/linux' in buffer.c but no coherent explanation of why that might be so. If it is so, in current versions of Linux, something else should probably be changed. Some sysV.3 systems seem to have bugs in `opendir'; for them, alter `config.h' to define NONSYSTEM_DIR_LIBRARY and undefine SYSV_SYSTEM_DIR. If you use optimization on V.3, you may need the option -W2,'-y 0' to prevent certain faulty optimization. On 386/ix, to link with shared libraries, add #define USG_SHARED_LIBRARIES to config.h. On SCO, there are problems in regexp matching when Emacs is compiled with the system compiler. The compiler version is "Microsoft C version 6", SCO 4.2.0h Dev Sys Maintenance Supplement 01/06/93; Quick C Compiler Version 1.00.46 (Beta). The solution is to compile with GCC. On ISC systems (2.02 and more recent), don't try to use the versions of X that come with the system; use XFree86 instead. There is no consistency in the handling of certain system header files on V.3. Some versions have sys/sioctl.h, and require it in sysdep.c. But some versions do not have sys/sioctl.h. For a given version of the system, this may depend on whether you have X Windows or TCP/IP. Define or undefine NO_SIOCTL_H in config.h according to whether you have the file. Likewise, some versions have been known to need sys/ttold.h, sys/stream.h, and sys/ptem.h included in sysdep.c. If your system has these files, try defining NEED_PTEM_H in config.h if you have trouble without it. You may find that adding -I/usr/X/include or -I/usr/netinclude or both to CFLAGS avoids compilation errors on certain systems. Some versions convince sysdep.c to try to use `struct tchars' but define `struct tc' instead; add `#define tchars tc' to config.h to solve this problem. Iris 2500 and Iris 2500 Turbo (m68k-sgi-iris3.5 or m68k-sgi-iris3.6) Version 18 was said to work; use m68k-sgi-iris3.5 for system version 2.5 and m68k-sgi-iris3.6 for system version 3.6. Note that the 3030 is the same as the Iris 2500 Turbo. Iris 4D (mips-sgi-irix[456].*) The 19.26 pretest was reported to work on IRIX 4.0.5 and 5.2. 19.23 was reported to work on IRIX 5.2, but you may need to install the "compiler_dev.hdr.internal" subsystem in order to compile unexelfsgi.c. 19.22 was known to work on all Silicon Graphics machines running IRIX 4.0.5 or IRIX 5.1. Compiling with -O using IRIX compilers prior to 3.10.1 may not work. Don't use -O or use GCC instead. Most IRIX 3.3 systems do not have an ANSI C compiler, but a few do. Compile Emacs 18 with the -cckr switch on these machines. There is a bug in IRIX 3.3 that can sometimes leave ptys owned by root with a permission of 622. This causes malfunctions in use of subprocesses of Emacs. Irix versions 4.0 and later with GNU Emacs versions 18.59 and later fix this bug. Masscomp (m68k-masscomp-rtu) 18.36 worked on a 5500DP running RTU v3.1a and compiler version 3.2 with minor fixes that are included in 18.37. However, bizarre behavior was reported for 18.36 on a Masscomp (model and version unknown but probably a 68020 system). The report sounds like a compiler bug. A compiler bug affecting statements like unsigned char k; unsigned char *p;... x = p[k]; has been reported for "C version 1.2 under RTU 3.1". We do not wish to take the time to install the numerous workarounds required to compensate for this bug. For RTU version 3.1, define FIRST_PTY_LETTER to be 'p' in `src/s/rtu.h' (or #undef and redefine it in config.h) so that ptys will be used. GNU Emacs is said to have no chance of compiling on RTU versions prior to v3.0. Megatest (m68k-megatest-bsd) Emacs 15 worked; do not have any reports about Emacs 16 or 17 but any new bugs are probably not difficult. Mips (mips-mips-riscos, mips-mips-riscos4.0, or mips-mips-bsd) The C compiler on Riscos 4.51 dumps core trying to optimize parts of Emacs. Try without optimization or try GCC. Meanwhile, the linker on that system returns success even if there are undefined symbols; as a result, configure gets the wrong answers to various questions. No work-around is known except to edit src/config.h by hand to indicate which functions don't exist. Use mips-mips-riscos4.0 for RISCOS version 4. Use mips-mips-bsd with the BSD world. Note that the proper configuration names for DECstations are mips-dec-ultrix and mips-dec-osf. If you are compiling with GCC, then you must run fixincludes; the alternative of using -traditional won't work because the definition of SIGN_EXTEND_CHAR uses the keyword `signed'. If the SYSV world is the default, then you probably need the following line in etc/Makefile: CFLAGS= -g -systype bsd43 Some operating systems on MIPS machines give SIGTRAP for division by zero instead of the usual signals. The only real solution is to fix the system to give a proper signal. In the meantime, you can change init_data in data.c if you wish. Change it to handle SIGTRAP as well as SIGFPE. But this will have a great disadvantage: you will not be able to run Emacs under a debugger. I think crashing on division by zero is a lesser problem. dsg@mitre.org reported needing to use --x-libraries=/bsd43/usr/lib on a riscos4bsd site. But it is not clear whether this is needed in general or only because of quirks on a particular site. National Semiconductor 32000 (ns32k-ns-genix) This is for a complete machine from National Semiconductor, running Genix. Changes merged in version 19. NCR Tower 32 (m68k-ncr-sysv2 or m68k-ncr-sysv3) If you are running System V release 2, use m68k-ncr-sysv2. If you are running System V release 3, use m68k-ncr-sysv3. These both worked as of 18.56. If you change `src/ymakefile' so that CFLAGS includes C_OPTIMIZE_SWITCH rather than C_DEBUG_SWITCH, check out the comments in `src/m/tower32.h' (for System V release 2) or `src/m/tower32v3.h' (for System V release 3) about this. There is a report that compilation with -O did not work with 18.54 under System V release 2. NCR Intel system (i386-ncr-sysv4.2) This system works in 19.31, but if you don't link it with GNU ld, you may need to set LD_RUN_PATH at link time to specify where to find the X libraries. NEC EWS4800 (mips-nec-sysv4) This system works in 20.4, but you should use the compiler /usr/abiccs/bin/cc (MIPS ABI MODE). NeXT (m68k-next-nextstep) Emacs 19 has not been tested extensively yet, but it seems to work in a NeXTStep 3.0 terminal window, and under the X server called co-Xist. You may need to specify -traditional when src/Makefile builds xmakefile. NeXT users might want to implement direct operation with NeXTStep, but from the point of view of the GNU project, that is a distraction. Thanks to Thorsten Ohl for working on the NeXT port of Emacs 19. Nixdorf Targon 31 (m68k-nixdorf-sysv) Machine description file for version 17 is included in 18 but whether it works is not known. `src/unexec.c' bombs if compiled with -O. Note that the "Targon 35" is really a Pyramid. Nu (TI or LMI) (m68k-nu-sysv) Version 18 is believed to work. Paragon OSF/1 (i860-intel-osf1) Changes merged in 19.29. There is a bug in OSF/1 make which claims there is a syntax error in the src/xmakefile. You can successfully build emacs with: pmake MAKE=pmake Plexus (m68k-plexus-sysv) Worked as of 17.56. Pmax (DEC Mips) (mips-dec-ultrix or mips-dec-osf1) See under DECstation, above. Prime EXL (i386-prime-sysv) Minor changes merged in 19.1. Pyramid (pyramid-pyramid-bsd) The 19.26 pretest was observed to work on OSx 5.0, but it is necessary to edit gmalloc.c. You must add #include at the top, and delete the #define for size_t. You need to build Emacs in the Berkeley universe with the `ucb' command, as in `ucb make' or `ucb build-install'. In OSx 4.0, it seems necessary to add the following two lines to `src/m/pyramid.h': #define _longjmp longjmp #define _setjmp setjmp In Pyramid system 2.5 there has been a compiler bug making Emacs crash just after screen-splitting with Qnil containing 0. A compiler that fixes this is Pyramid customer number 8494, internal number 1923. Some versions of the pyramid compiler get fatal errors when the -gx compiler switch is used; if this happens to you, change `src/m/pyramid.h' to define C_DEBUG_SWITCH with an empty definition. Some old system versions may require you to define PYRAMID_OLD in when alloca.s is preprocessed, in order to define _longjmp and _setjmp. Sequent Balance (ns32k-sequent-bsd4.2 or ns32k-sequent-bsd4.3) Emacs 18.51 worked on system version 3.0. 18.52 is said to work. Delete some lines at the end of `src/m/sequent.h' for earlier system versions. Sequent Symmetry (i386-sequent-bsd, i386-sequent-ptx, i386-sequent-ptx4) 19.33 has changes to support ptx 4 (a modified SVR4). Emacs 19 should work on Dynix (BSD). However, if you compile with the Sequent compiler, you may find Emacs does not restore the terminal settings on exit. If this happens, compile with GCC. Emacs 19.27 contains patches that should support DYNIX/ptx 1.4 and 2.1 with the native cc compiler. GCC can't compile src/process.c due to a non-standard Sequent asm keyword extension supported by cc and used for the network byte/word swapping functions in the PTX /usr/include/netinet/in.h file. GCC 2.5.8 includes the file which can be included into netinet/in.h to perform these byte/word swapping functions in the same manner. Patches have been submitted to the FSF against GCC 2.6.0 to fix this problem and allow Emacs to be built with GCC. If your machine does not have TCP/IP installed, you will have to edit the src/s/ptx.h file and comment out #define TCPIP_INSTALLED. Siemens Nixdorf RM600 and RM400 (mips-siemens-sysv4) Changes merged in 19.29. This configuration should also work for Pyramid MIS Server running DC-OSX 1.x. The version configured with `--with-x' works without any modifications, but `--with-x-toolkit' works only if the Athena library and the Toolkit library are linked statically. For this, edit `src/Makefile' after the `configure' run and modify the lines with `-lXaw' and `-lXt' as follows: LIBW= /usr/lib/libXaw.a LIBXT= $(LIBW) -lXmu /usr/lib/libXt.a $(LIBXTR6) -lXext In addition, `--with-x-toolkit=motif' works only if the Motif library and the Toolkit library are linked statically. To do this, edit `src/Makefile' after the `configure' run and modify the lines with `-lXm' and `-lXt' as follows: LIBW= /usr/lib/libXm.a /usr/ccs/lib/libgen.a LIBXT= $(LIBW) -lXmu /usr/lib/libXt.a $(LIBXTR6) -lXext SONY News (m68k-sony-bsd4.2 or m68k-sony-bsd4.3) 18.52 worked. Use m68k-sony-bsd4.3 for system release 3. SONY News 3000 series (RISC NEWS) (mips-sony-bsd) The 19.26 pretest is reported to work. Some versions of the operating system give SIGTRAP for division by zero instead of the usual signals. This causes division by zero to make Emacs crash. The system should be fixed to give the proper signal. Changing Emacs is not a proper solution, because it would prevent Emacs from working under any debugger. But you can change init_data in data.c if you wish. Stardent i860 (i860-stardent-sysv4.0) 19.26 pretest reported to work. Stardent 1500 or 3000 See Titan. Stride (m68k-stride-sysv) Works (most recent news for 18.30) on their release 2.0. For release 2.2, see the end of `src/m/stride.h'. It may be possible to run on their V.1 system but changes in the s- file would be needed. Sun 3, Sun 4 (sparc), Sun 386 (m68k-sun-sunos, sparc-sun-sunos, i386-sun-sunos, sparc-sun-sunos4.1.3noshr, sparc-sun-solaris2.*, i386-sun-solaris2.*) Emacs 20.3 fails to build on Solaris 2.5 if you use GCC 2.7.2.3. Installing GCC 2.8 fixes the problem. 19.32 works on Solaris 2.4 and 2.5. On Solaris 2.5 you may need one of these patches to prevent Emacs from crashing when it starts up: 103093-03: [README] SunOS 5.5: kernel patch (2140557 bytes) 102832-01: [README] OpenWindows 3.5: Xview Jumbo Patch (4181613 bytes) 103242-04: [README] SunOS 5.5: linker patch (595363 bytes) There are reports that using SunSoft cc with -xO4 -xdepend produces bad code for some part of Emacs. Emacs works ok Sunos 4.1.x provided you completely replace your C shared library using one of the SunOS 4.1.x jumbo replacement patches from Sun. Here are the patch numbers for Sunos 4.1.3: 100890-10 SunOS 4.1.3: domestic libc jumbo patch 100891-10 SunOS 4.1.3: international libc jumbo patch Some people report that Emacs crashes immediately on startup when used with a non-X terminal, but we think this is due to compiling with GCC and failing to use GCC's "fixed" system header files. Some Sun versions of X windows use the clipboard, not the selections, for transferring text between clients. The Cut, Paste and Copy items in the menu bar Edit menu work with the clipboard. It's important to include the SunOS version number in the configuration name. For example, for SunOS release 4.0 on a Sun 3, use `m68k-sun-sunos4.0'; for SunOS release 4.1 on a Sparc, use `sparc-sun-sunos4.1'. For SunOS release 4.1.3 on a Sparc, use `sparc-sun-sunos4.1.3'. Note that shared libraries are now used by default on SunOS 4.1. A user reported irreproducible segmentation faults when using 19.29 on Solaris 2.3 and 2.4 after compiling it with the Sun compiler. The problem went away when GCC 2.7.0 was used instead. We do not know whether anything in Emacs is partly to blame for this. X11R6 is set up to make shared libraries only, on Sunos 4. Therefore, in order to link Emacs, you need to create static X libraries. To do this, rebuild X11 after setting #define ForceNormalLib YES #define SeparateSharedCompile YES in site.def (after #ifdef AfterVendorCF). Use `m68k' for the 68000-based Sun boxes, `sparc' for Sparcstations, and `i386' for Sun Roadrunners. i386 calls for Sunos4.0. If you compile with Sun's ANSI compiler acc, you need additional options when linking temacs, such as /usr/lang/SC2.0.1/values-Xt.o -L/usr/lang/SC2.0.1/cg87 -L/usr/lang/SC2.0.1 (those should be added just before the libraries) and you need to add -lansi just before -lc. The precise file names depend on the compiler version, so we cannot easily arrange to supply them. On SunOS 4.1.1, do not use /usr/5bin/cc. You can use gcc or/usr/bin/cc. Make sure the environment variable LD_LIBRARY_PATH is not defined. Some people report crashes on SunOS 4.1.3 if SYSTEM_MALLOC is defined. Others have reported that Emacs works if SYSTEM_MALLOC is defined, and not if it is undefined. So far we do not know why results vary in this way. The sources are set up so that SYSTEM_MALLOC is defined; if that crashes, or if you want the benefit of the relocating memory allocator, you can try enabling the #undef SYSTEM_MALLOC in src/s/sunos4-1-3.h. On Solaris 2, you need to install patch 100947-02 to fix a system bug. Presumably this patch comes from Sun. You must alter the definition of LD_SWITCH_SYSTEM if your X11 libraries are not in /usr/openwin/lib. You must make sure that /usr/ucblib is not in your LD_LIBRARY_PATH. On Solaris 2.2, with a multiprocessor SparcCenter 1000, Emacs 19.17 is reported to hang sometimes if it exits while it has one or more subprocesses (e.g. the `wakeup' subprocess used by `display-time'). Emacs and its subprocesses become zombies, and in their zombie state slow down their host and disable rlogin and telnet. This is most likely due to a bug in Solaris 2.2's multiprocessor support, rather than an Emacs bug. On Solaris, do not use /usr/ucb/cc. Use /opt/SUNWspro/bin/cc. Make sure that /usr/ccs/bin and /opt/SUNWspro/bin are in your PATH before /usr/ucb. (Most free software packages have the same requirement on Solaris.) If you have trouble using open-network-stream, get the distribution of `bind' (the BSD name-server), build libresolv.a, and link Emacs with -lresolv, by copying the #definition of LIBS_SYSTEM in src/s/sunos4-1.h to src/config.h. This problem is due to obsolete software in the nonshared standard library. If you want to use SunWindows, define HAVE_SUN_WINDOWS in config.h to enable a special interface called `emacstool'. The definition must *precede* the #include "machine.h". System version 3.2 is required for this facility to work. We recommend that you instead use the X window system, which has technical advantages, is an industry standard, and is also free software. The FSF does not support the SunWindows code; we installed it only on the understanding we would not let it divert our efforts from what we think is important. If you are compiling for X windows, and the X window library was compiled to use the 68881, then you must edit config.h according the comments at the end of `src/m/sun3.h'. Note that Emacs on a Sun is not really as big as it looks. As dumped, it includes around 200k of zeros between the original text section and the original data section (now remapped as part of the text). These are never swapped in. To build a single Emacs that will run on Sun 2 and Sun 3 HARDWARE, just build it on the Sun 2. On Sunos 4.1.3, the word is that Emacs can loop infinitely on startup with X due perhaps to a bug in Sunos. Installing all of these Sun patches fixes the problem. We don't know which of them are really relevant. 100075-11 100224-06 100347-03 100482-05 100557-02 100623-03 100804-03 101080-01 100103-12 100249-09 100496-02 100564-07 100630-02 100891-10 101134-01 100170-09 100296-04 100377-09 100507-04 100567-04 100650-02 101070-01 101145-01 100173-10 100305-15 100383-06 100513-04 100570-05 100689-01 101071-03 101200-02 100178-09 100338-05 100421-03 100536-02 100584-05 100784-01 101072-01 101207-01 Tadpole 68K (m68k-tadpole-sysv) Changes merged in 19.1. You may need to edit Makefile to change the variables LIBDIR and BINDIR from /usr/local to /usr/contrib. To give movemail access to /usr/mail, you may need to execute chmod 2755 etc/movemail; chgrp mail etc/movemail Tahoe (tahoe-tahoe-bsd4.2 or tahoe-tahoe-bsd4.3) 18.52 was known to work on some Tahoes, but a compiler bug intervenes on others. Some Emacs versions have worked in Unisys 1r4 (not in 1r3) and CCI I.21. If you have trouble compiling `lib-src/loadst.c', turn off the definition of DKSTAT_HEADER_FILE in `src/m/tahoe.h'. Tandem Integrity S2 (mips-tandem-sysv) Changes merged in 18.56 but subprocess support is turned off. You will probably want to see if you can make subprocesses work. You must edit `lib-src/Makefile' to define LOADLIBES = -mld. Tektronix XD88 (m88k-tektronix-sysv3*) The 19.26 pretest was reported to work. Minor changes merged in 19.19. Tektronix 16000 box (6130?) (ns16k-tektronix-bsd) Emacs 17.61 worked. Tektronix 4300 (m68k-tektronix-bsd) Emacs 19.26 pretest reported to work. Titan P2 or P3 (titan-titan-sysv) Changes probably merged in version 19. Ustation E30 (SS5E) (m68k-unisys-unipl) Changes merged in 18.52; don't know whether they work. Vaxen running Berkeley Unix (vax-dec-bsd4.1, vax-dec-bsd4.2, vax-dec-bsd4.3), Ultrix (vax-dec-ultrix), System V (vax-dec-sysv0, vax-dec-sysv2), or VMS (vax-dec-vms) Works. See under Ultrix for problems using X windows on Ultrix (vax-dec-ultrix). 18.27 worked on System V rel 2 (vax-dec-sysv2). 18.36 worked on System V rel 0 (vax-dec-sysv0). Richard Levitte distributes a set of patches to Emacs 18.59 to make it work nicely under VMS. Emacs 19 probably won't work very well, or even compile. Levitte is working on a port, so these problems should be fixed in the near future. Whitechapel MG1 (ns16k-whitechapel-?) May work. Supposedly no changes were needed except in `src/m/mg1.h' file. I do not know what Unix version runs on them. Wicat (m68k-wicat-sysv) Changes merged as of 18.6; whether they work is unknown. See comments in `src/m/wicat.h' for things you should change depending on the system and compiler version you have. Here are notes about some of the systems supported: Berkeley 4.1 (bsd4.1) Works on vaxes. Berkeley 4.2 (bsd4.2) Works on several machines. Berkeley 4.3 (bsd4.3) Works, on Vaxes at least. Esix The following was written for Emacs 18.59 and has been slightly adapted for Emacs 19. It may need more change to be correct. Use s/usg5-4.h for Esix System V 4.0.[34] systems if you also have XFree86. If you insist on using the Esix X Window libraries, good luck. s/esix5r4.h provides a starting point, but doesn't seem to work consistently. The basic problems involve the need to load -lX11 *last* in the link command, and even then some things break. You get best results by installing XFree86 and forgetting about the Esix stuff unless you want to run IXI xdt3, which really only needs the Esix X11 shared libraries. To compile with XFree86, make sure that your LD_LIBRARY_PATH contains /usr/X386/lib. Be careful if you also have the Esix X Window libraries that /usr/X386/lib appears *first* in the LD_LIBRARY_PATH. Then define C_SWITCH_X_SYSTEM -I/usr/X386/include. Linux (actually GNU/Linux) Most of the complete systems which use the Linux kernel are close enough to the GNU system to be considered variant GNU systems. We call them "Linux-based GNU systems," or GNU/Linux for short. It is not coincidence that many of the other components used with Linux--including GNU Emacs--were developed specifically for the GNU project. The GNU project was launched in 1984 to develop a free complete Unix-like operating system. To reach this goal, we had to develop whatever system components were not available as freely redistributable software from some other source. The GNU project wants users of GNU/Linux systems to be aware of how these systems relate to the GNU project, because that will help spread the GNU idea that software should be free--and thus encourage people to write more free software. See the file LINUX-GNU in this directory for more explanation. Microport See under "Intel 386". MSDOS For installation on MSDOS, see the file INSTALL (search for `MSDOG', near the end of the file). See the "MS-DOS" chapter of the manual for information about using Emacs on MSDOS. SCO Unix If you have TCP but not X, you need to edit src/s/sco4.h to define HAVE_SOCKETS. If you are using MMDF instead of sendmail, you need to remove /usr/lib/sendmail or modify lisp/paths.el before compiling. lisp/paths.el (which is loaded during the build) will attempt to use sendmail if it exists. If you are using SMAIL, you need to define the macro SMAIL in config.h. System V rel 0 (usg5.0) Works, on Vaxes and 3bxxx's. There are some problems in 18.37 due to shortnames/cccp problems: use the emacs 17 cpp if you have it. System V rel 2 (usg5.2) Works on various machines. On some (maybe all) machines the library -lPW exists and contains a version of `alloca'. On these machines, to use it, put #define HAVE_ALLOCA #define LIB_STANDARD -lPW -lc in the `src/m/MACHINENAME.h' file for the machine. If you find that the character Meta-DEL makes Emacs crash, find where function init_sys_modes in sysdep.c sets sg.c_cc[VQUIT] and make it store 7 there. I have as yet no evidence of whether this problem, known in HP/UX, exists in other system V versions. System V rel 2.2 (usg5.2.2) In 5.2.2 AT&T undid, incompatibly, their previous incompatible change to the way the nlist library is called. A different s- file is used to enable the other interface. They call themselves the right choice--can't they choose? Emacs version 18 unexec is currently not working properly on 5.2.2. Nobody knows why yet. A workaround is to define NO_REMAP. It is not yet known whether this applies to all machines running 5.2.2. System V rel 3 (usg5.3) Some versions of this system support ptys and BSD-style sockets. On such systems, you should define HAVE_PTYS and HAVE_SOCKETS in config.h. If you want to link Emacs with shared libraries, define USG_SHARED_LIBRARIES. You may have to add ANSI idempotence #-lines to your sys/types.h file to get Emacs to compile correctly. This may be necessary on other pre-ANSI systems as well. On an AT&T 6386WGS using System V Release 3.2 and X11R3, the X support cannot be made to work. Whether or not the GNU relocating malloc is used, the symptom is that the first call Emacs makes to sbrk(0) returns (char *)-1. Sorry, you're stuck with character-only mode. Try installing Xfree86 to fix this. System V rel 4.0.3 and 4.0.4 (usg5.4) Supported, including shared libraries for ELF, but ptys do not work because TIOCGPGRP fails to work on ptys (but Dell 2.2 seems to have fixed this). This failure is probably due to a misunderstanding of the consequences of the POSIX spec: many system designers mistakenly think that POSIX requires this feature to fail. This is untrue; ptys are an extension, and POSIX says that extensions *when used* may change the action of standard facilities in any fashion. If you get compilation errors about wrong number of arguments to getpgrp, define GETPGRP_NO_ARG. The standard C preprocessor may generate xmakefile incorrectly. However, /lib/cpp will work, so use `make CPP=/lib/cpp'. Standard cpp seems to work OK under Dell 2.2. Some versions 3 and earlier of V.4, on the Intel 386 and 860, had problems in the X11 libraries. These prevent Emacs from working with X. You can use Emacs with X provided your copy of X is based on X11 release 4 or newer, or is Dell's 2.2 (which is a 4.0.3). Unfortunately, the only way you can tell whether your X11 library is new enough is to try compiling Emacs to use X. If emacs runs, your X11 library is new enough. In this context, GSV4 and GSV4i are alternate names for X11R4. OL2.* is X11R3 based. OL3 is in between X11R3 and X11R4, and may or may not work, depending on who made the Unix system. If the library libXol is part of the X distribution, then you have X11R3 and Emacs won't work with X. Most versions of V.4 support sockets. If `/usr/lib/libsocket.so' exists, your system supports them. If yours does not, you must add #undef HAVE_SOCKETS in config.h, after the inclusion of s-usg5-4.h. (Any system that supports Internet should implement sockets.) Ultrix (bsd4.3) Recent versions of Ultrix appear to support the features of Berkeley 4.3. Ultrix was at the BSD 4.2 level for a long time after BSD 4.3 came out. Ultrix 3.0 has incompatibilities in its X library if you have the Ultrix version of X (UWS version 2.0). To solve them, you need to prevent XvmsAlloc.o in Xlib from being used. Israel Pinkas says: I added the following lines to config.h after the X defines: #if defined(ultrix) && defined(X11) #define OBJECTS_SYSTEM calloc.o #endif Then I ran the following: ar x /usr/lib/libc.a calloc.o The problem is said to be gone in UWS version 2.1. Uniplus 5.2 (unipl5.2) Works, on Dual machines at least. VMS (vmsM.N) Richard Levitte distributes a set of patches to Emacs 18.59 to make it work nicely under VMS. Emacs 19 probably won't work very well, or even compile. Levitte is working on a port, so these problems should be fixed in the near future. Note that Emacs for VMS is usually distributed in a special VMS distribution. See the file ../vms/VMSINSTALL for info on moving Unix distributions to VMS, and other VMS-related topics. Windows NT For installation on Windows NT, see the file etc/INSTALL and search for `Windows NT'. Xenix (xenix) Should work in 18.50, but you will need to edit the files `lib-src/Makefile' and `src/ymakefile' (see the comments that mention "Xenix" for what to change.) Compiling Emacs with -O is said not to work. If you want Emacs to work with Smail (installed as /usr/bin/smail) then add the line #define SMAIL to config.h. The file etc/XENIX suggests some useful things to do to Xenix to make the Emacs meta key work. 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