Lynx Installation Guide This file describes how to compile and install Lynx. A description of Lynx can be found in the README file. Lynx has been ported to UN*X, VMS, Win32 and 386DOS. The procedures for compiling these ports are quite divergent, and are detailed respectively in Sections II, III, IV and V. First, however, you must configure Lynx for your system regardless of the port you will be using. Follow the instructions given immediately below to configure for your system, and then go to the respective section concerning the port you wish to compile. General installation, problem solving, and environment variables are covered in Sections VI and VII. I. General configuration instructions (all ports). Step 1. (define compile-time variables -- See the userdefs.h file.) There are a few variables that MUST be defined, or Lynx will not build. There are a few more that you will probably want to change. The variables that must be changed are marked as such in the userdefs.h file. Just edit this file, and the changes should be straight forward. Many of the variables in "userdefs.h" are now configurable in the lynx.cfg file, so you may set them at run-time if you wish. If you compile using auto- configure, you would not absolutely need to edit "userdefs.h". Check LYMessages_en.h for tailoring the Lynx statusline prompts, messages and warnings to the requirements of your site. The strings in LYMessages_en.h may be translated into a language of your choice. If you rename the file, be sure to change the definition in "userdefs.h". Step 2. (define run-time variables -- See the lynx.cfg file for details.) Set up local printers, downloaders, assumed character set, key mapping, and colors in the lynx.cfg file. Please read "lynx.cfg" thoroughly as many of the features of Lynx, and how to use them, are explained. Also see the example mime.types, mailcap and jumps files in the samples subdirectory. Lynx must be able to find the lynx.cfg file at start-up. The location of the lynx.cfg file may be compiled in with the LYNX_CFG_FILE defined in userdefs.h (or with the configure option explained in the Unix section below), specified with an environment variable, LYNX_CFG, or specified with the "-cfg" command line option. Step 3. (You may skip this step if you only use English and are not interested in any special characters, or if your display and local files will all use the ISO-8859-1 "ISO Latin 1" Western European character set.) People who will be running Lynx in an environment with different and incompatible character sets should configure CHARACTER_SET (the Display character set) and ASSUME_LOCAL_CHARSET to work correctly for them before creating bookmark files et cetera. Please read "lynx.cfg" for detailed instructions. Additional character sets and their properties may be defined with tables in the src/chrtrans directory, see the README.* files therein. Step 4. (optional -- news for UNIX and VMS) Set NNTPSERVER in "lynx.cfg" to your site's NNTP server, or set the environment variable externally. (See "VII. Setting environment variables before running Lynx" for help on setting this and other environment variables which affect Lynx.) For news posting ability to be enabled in Lynx, in userdefs.h (and optionally in lynx.cfg) the NEWS_POSTING symbol must be defined to TRUE. Also define LYNX_SIG_FILE in userdefs.h or lynx.cfg so that it points to users' signature files for appending to posted messages. Step 5. (optional -- UNIX only) To add direct WAIS support, get the freeWAIS distribution from "ftp://ftp.cnidr.org/pub/NIDR.tools/freewais", and compile it. The compile process will create the libraries you will need, wais.a and client.a. Edit the Makefile in the top level directory and add the library locations under the DIRECT WAIS ACCESS heading. Edit the Makefile for the WWW Library in "WWW/Library/Implementation/CommonMakefile" to point to the include directory for the freewais distribution. Precompiled libraries are available for many platforms if you don't wish to compile one yourself. Step 6. (Anonymous account -- VERY IMPORTANT!!!!! -- ) If you are building Lynx for your personal use only you may skip this step. If you are setting up an anonymous account with Lynx, you are STRONGLY advised to use the -anonymous command line option. If you do not use this option, users may be able to gain access to all readable files on your machine! ALSO NOTE that many implementations of telnetd allow passing of environment variables, which might be used by unscrupulous people to modify the environment in anonymous accounts. When making Lynx and Web access publicly available via anonymous accounts intended to run Lynx captively, be sure the wrapper uses the -cfg switch to specify the startfile, rather than relying on the LYNX_CFG, LYNX_CFG_FILE, or WWW_HOME variables. II. Compile instructions -- UNIX 1a. Auto-configure. The auto-configure script uses autoconf2.12 to generate a Bourne shell script, configure, which creates "makefile" and "lynx_cfg.h". If you are on a UNIX platform, the easiest way to build Lynx is to type: ./configure and make NOTE: Configure has a number of useful options. Please see below. NOTE: The 'configure' script generates auxiliary files "config.status" "config.cache" and "config.log". Normally you will not notice these; they are created automatically and removed by a "make distclean". + If you wish to rebuild Lynx with a new host, or change ANY of the parameters which are stored in config.cache, you MUST first remove the config.cache file before running configure; its options do NOT override the settings in that file. + The config.status file is a script which creates (or regenerates) the files created by the configure script. Please report problems in the configure/make process by including a copy of config.status, config.cache and config.log, as well as the pertinent compiler diagnostics. NOTE: Lynx is a curses-based application, so you must have a curses library available to link to. Native curses (on the system when it was installed) are often broken, so you may get superior performance if you have either "ncurses" ("ftp://ftp.clark.net/pub/dickey/ncurses") or "slang" ("ftp://space.mit.edu/pub/davis/slang"). If you install these libraries in your home directory or a non-default location, you may need to set the CPPFLAGS (full path to include files) and LIBS (full path to library files) environment variables BEFORE running configure. See "1d. Environment". Use the "--with-screen=ncurses" or "--with-screen=slang" option. 1b. Platforms. Configure should work properly on any Unix-style system. It has been tested on the following platforms. AIX 3.2.5 (cc w/ curses) CLIX (cc w/ curses & ncurses) DGUX Digital Unix 3.2C and 4.0 (gcc & cc w/ curses, ncurses & slang) FreeBSD 2.1.5 (gcc 2.6.3 w/ curses & ncurses) HP-UX (K&R and ANSI cc, gcc w/ curses, ncurses & slang) IRIX 5.2 and 6.2 (cc & gcc w/ curses, ncurses & slang) Linux 2.0.0 (gcc 2.7.2 w/ curses, ncurses & slang) MkLinux 2.1.5 (gcc 2.7.2.1) NetBSD OS/2 EMX 0.9b SCO (cc w/ curses) Solaris 2.5 & 2.6 (cc & gcc w/ curses, ncurses & slang) SunOS 4.1 (cc w/ curses, gcc w/ ncurses & slang) NOTE: SunOS and HP-UX come with a bundled K&R compiler, which is only useful for compiling with the bundled curses. Both ncurses and slang require a compiler that recognizes prototypes. 1c. Options To get a list of the configure script's options, type "./configure --help". Below is an alphabetical listing of the Lynx-specific options. The actual order shown by the -help option is different. See "docs/README.defines" for information on defines for which there are no option switches. --disable-dired (defines DIRED_SUPPORT) Use this option to disable the optional directory-editor. Lynx supports directory editing (DirEd) for local directories. This allows users to do things like view, copy and remove files using a tabular display of the directory and single-keystroke commands instead of using the command line. From inside Lynx, the keystroke sequence "g." switches Lynx to DirEd mode on the current directory. If you're building a Lynx that is to be used as a kind of restricted shell for users who do not have access to the command line and should not have access to equivalent capabilities, you must disable DirEd with this option. You can also disable some DirEd functions while allowing others. If you have disabled DirEd completely, you can ignore all the other DirEd options. All DirEd functions that were enabled on compilation can be disabled or modified at run time via DIRED_MENU symbols in lynx.cfg. --disable-dired-archive (define ARCHIVE_ONLY) Use this option to prevent DirEd from extracting files from an archive file. --disable-dired-gzip (prevent defining OK_GZIP) Use this option to prevent DirEd from using gzip and gunzip. --disable-dired-override (prevent defining OK_OVERRIDE) Lynx users can customize their keymaps by creating private versions of lynx.cfg and modifying them to override the default keymap. Use this option to prevent DirEd keymap overriding. --disable-dired-permit (prevent defining OK_PERMIT) Use this option to prevent DirEd from changing the permissions on directories or files (i.e., from doing what the Unix chmod command or the DOS attrib command does). --disable-dired-tar (prevent defining OK_TAR) Use this option to prevent DirEd from using the tar program. --disable-dired-uudecode (prevent defining OK_UUDECODE) Use this option to prevent DirEd from using uudecode. --disable-dired-xpermit (define NO_CHANGE_EXECUTE_PERMS) Use this option if you do not disable out the dired-permit option, but want to restrict changes of the eXecute permission to directories (i.e., not allow it to be changed for files). If you don't do this, you can still block changes of the eXecute permission for files but not directories via the "change_exec_perms" command line restriction. --disable-dired-zip (prevent defining OK_ZIP) Use this option to prevent DirEd from using zip and unzip. --disable-echo Use this option to suppress the "compiling" commands during a build. Doing this makes it easier to find and read warning messages. --disable-extended-dtd (define NO_EXTENDED_HTMLDTD) disable extended HTML DTD logic. This should revert to old-style (2.7.1/2.7.2) behavior, but is not well-tested. --disable-full-paths Use this option to control whether full utility pathnames are used. By default, configure substitutes full pathnames. --disable-long-list (prevent defining LONG_LIST) Use this option to disable long "ls -l" directory listings. --disable-parent-dir-refs (define NO_PARENT_DIR_REFERENCE) Use this option to disable "Up-to" parent-links in directory listings. --enable-8bit-toupper (define EXP_8BIT_TOUPPER) use experimental 8-bit case-conversion, e.g., for case-insensitive searches in non-ASCII character set. --enable-color-style (define USE_COLOR_STYLE) Use this option to enable optional and *experimental* color style. (Also defines USE_HASH, LINKEDSTYLES) --enable-debug (The symbol DEBUG is always defined.) Use this option to compile-in support for debugging. --enable-default-colors (define USE_DEFAULT_COLORS) enable use of default-color background (ncurses/slang). Either configuration supports the use of 'default' for colors even without this option. --enable-externs (define USE_EXTERNALS) Use this option to enable external application support. (See lynx.cfg.) --enable-find-leaks (define LY_FIND_LEAKS) Use this option to compile-in logic for testing memory leaks. --enable-font-switch (define EXP_CHARTRANS_AUTOSWITCH) Allow Lynx to automatically change the Linux console state (switch fonts) according to the current Display Character Set. (Linux console only. *Use with discretion.* See docs/README.chartrans.) --enable-internal-links (define DONT_TRACK_INTERNAL_LINKS) Disabled by default, this option allows tracking of internal links, a feature which could, however, compromise a secure transaction by forcing inappropriate resubmission of form content. --enable-nsl-fork (define NSL_FORK) Use this option to allow NSL requests to be aborted at will. --enable-underlines (define UNDERLINE_LINKS) Use this option underline links rather than using boldface. --enable-warnings Use this option to turn on GCC compiler warnings. --libdir (affect LYNX_CFG_FILE) Defines the location where you want the lynx.cfg file installed. The configure script defines the symbol LYNX_CFG_FILE to correspond with the $libdir environment variable. (For platforms which do not support a configure script, such as MS-DOS, Win32 and VMS, you must edit userdefs.h if you wish to specify the location of lynx.cfg). --with-screen=XXX Use this option to select the screen type. The option value, XXX must be one of curses (the default), ncurses or slang. Specifying a screen type causes the configure script to look in standard locations for the associated header and library files, unless you have preset the $CFLAGS and $LIBS variables. --with-screen=ncurses (define NCURSES) --with-screen=slang (define USE_SLANG) --with-zlib (define USE_ZLIB) Use zlib for decompression of some gzip files. 1d. Environment variables The configure script looks for programs and libraries in known/standard locations. You can override the behavior of the script by presetting environment variables. If they are set, the script will try to use these values rather than computing new ones. Useful variables include: CC - the C compiler. If you do not override this, configure will try to use gcc. CFLAGS - the C compiler options. These also include C preprocessor options (such as -I), since the $CFLAGS and $CPPFLAGS variables are maintained separately. CPPFLAGS - the C preprocessor options. For some configuration tests, you may need to set both $CFLAGS and $CPPFLAGS if you are compiling against header files in nonstandard locations. LDFLAGS - linker/loader options. LIBS - the libraries to be linked, with -L and -l options. If you are linking against libraries in nonstandard locations unrelated to the install prefix (that you can specify in the configure script) you may have to specify these via the $LIBS variable. -- 1997/7/27 - T. Dickey 1e. Examples If you are compiling Lynx for your personal use and are restricted to your home directory, a simple method for building would be to choose some directory, say ".lynx", and then type: ./configure --prefix=~/.lynx --exec-prefix=~/.lynx and make install Now you only need to add "~/.lynx/bin" to your PATH and edit "~/.lynx/lib/ lynx.cfg" as described above. I personally use the following csh shell script to set environment variables and configure options rather than type them each time. setenv RESOLVLIB -lbind #!/bin/csh -f setenv CPPFLAGS "-SYSLOG_REQUESTED_URLS -I$HOME/slang \ -I$HOME/.usr/include" setenv LIBS "-L$HOME/.slang/lib -L$HOME/.usr/lib" ./configure --exec-prefix=$HOME --bindir=$HOME/.lynx \ --mandir=$HOME/.usr/man --libdir=$HOME/.usr/lib \ --with-screen=slang --with-zlib The syntax for setting environment variables depends upon your shell. I use the libbind.a resolver library, not libresolv.a. Setting RESOLVLIB to -lbind defines this environment variable for `make', and thus must be set in the same shell that `make' will be run. CPPFLAGS in this example predefines SYSLOG_REQUESTED_URLS for the configure script, since it is not defined by default, and has no option switch (see "docs/README.defines"). CPPFLAGS also defines the full path to the slang and zlib header files, which are not kept in standard directories. Likewise, LIBS defines the nonstandard locations of libslang.a and libz.a. Setting the option --bindir tells the configure script where I want to install the lynx binary; setting --mandir tells it where to put the lynx.1 man page, and setting --libdir tells it (while at the same time defining LYNX_CFG_FILE) where to put the configuration file "lynx.cfg", when I type "make install". The --with-screen=slang and --with-zlib options are explained above. 2. Manual compile If auto-configure does not work for you, or you prefer to compile Lynx manually, "docs/Makefile.old" will serve as a template for the top-level Makefile, and instructions on how to compile are given in "docs/INSTALLATION.old". III. Compile instructions -- VMS Step 1. Downloading binary files. Lynx must handle all IO as streams, and on VMS, output files are always created with Stream_LF format via the C RTL's fopen(). The file headers indicate Implied Carriage Control, even when the transfer was in binary mode, which can confuse downloading software and cause corruption of the file contents. To deal with this, you should define the symbol USE_FIXED_RECORDS as TRUE in userdefs.h and/or lynx.cfg. This will instruct Lynx to correct the header information to indicate FIXED 512 records, with No Implied Carriage Control. If Lynx fails to do the conversion (because the file wasn't mapped to a binary MIME type) you can execute FIXED512.COM externally to correct the header information. The command file uses Joe Meadow's FILE utility, or the SET FILE/ATTRIBUTES command on current versions of VMS, to modify the headers. See the comments in FIXED512.COM, userdefs.h and lynx.cfg for more information. Step 2. Passive FTP If your system requires the PASV FTP code instead of the standard PORT FTP code (e.g., to deal with a firewall) then edit "WWW/Library/ Implementation/HTFTP.c" and comment out line 43 like so: /* #define LISTEN /* @@@@ Test LJM */. Step 3a. Lynx uses the VMS port of gzip for uncompressing streams which have Content-Encoding headers indicated compression with gzip or the Unix compress. If you do not have gzip installed on your system you can get it from "ftp://ftp.wku.edu/" in the fileserv directory. The command Lynx uses to uncompress on VMS is "gzip -d". If you are using the SOCKETSHR library, read SOCKETSHR.announce and make sure you have defined SOCKETSHR and SOCKETSHR_LIBRARY as explained therein. A "build.com" and "build-slang.com" script for building Lynx with curses or slang is in the top level directory. All you have to do is type "@build" or "@build-slang" and answer its prompt for your system's TCP-IP software. Current choices are: MULTINET (default) UCX WIN_TCP CMU_TCP SOCKETSHR_TCP TCPWARE It will autosense whether you have VAXC, DECC or GNUC on VAX or AXP and build appropriately. If a WWWLib already exists for that TCP-IP software, it will prompt you for whether you want to rebuild it. If you want to build a WWWLib separately, you can type "@libmake.com" with your default directory set to [.WWW.Library.vms] instead doing it via "build.com" in the top directory. You may need to modify "build-slang.com", as described in its header, so that it can find slang.olb on your system. If you have both DECC and VAXC, it will use DECC to benefit from the newer and more efficient memory management functions. Step 3b. (optional compilation method) If you have and want to use MMS, read the header of descrip.mms in the top directory and be sure you include the appropriate macro definitions when you invoke it: $ MMS /Macro = (MULTINET=1) for VAXC - MultiNet $ MMS /Macro = (WIN_TCP=1) for VAXC - Wollongong TCP/IP $ MMS /Macro = (UCX=1) for VAXC - UCX $ MMS /Macro = (CMU_TCP=1) for VAXC - OpenCMU TCP/IP $ MMS /Macro = (SOCKETSHR_TCP=1) for VAXC - SOCKETSHR/NETLIB $ MMS /Macro = (TCPWARE=1) for VAXC - TCPWare TCP/IP $ MMS /Macro = (MULTINET=1, DEC_C=1) for DECC - MultiNet $ MMS /Macro = (WIN_TCP=1, DEC_C=1) for DECC - Wollongong TCP/IP $ MMS /Macro = (UCX=1, DEC_C=1) for DECC - UCX $ MMS /Macro = (CMU_TCP=1, DEC_C=1) for DECC - OpenCMU TCP/IP $ MMS /Macro = (SOCKETSHR_TCP=1,DEC_C=1) for DECC - SOCKETSHR/NETLIB $ MMS /Macro = (TCPWARE=1, DEC_C=1) for DECC - TCPWare TCP/IP $ MMS /Macro = (MULTINET=1, GNU_C=1) for GNUC - MultiNet $ MMS /Macro = (WIN_TCP=1, GNU_C=1) for GNUC - Wollongong TCP/IP $ MMS /Macro = (UCX=1, GNU_C=1) for GNUC - UCX $ MMS /Macro = (CMU_TCP=1, GNU_C=1) for GNUC - OpenCMU TCP/IP $ MMS /Macro = (SOCKETSHR_TCP=1,GNU_C=1) for GNUC - SOCKETSHR/NETLIB $ MMS /Macro = (TCPWARE=1, GNU_C=1) for GNUC - TCPWare TCP/IP If you just type "MMS" it will default to the MULTINET and VAXC configuration. MMS will build the WWW library and Lynx sources, and link the executable. However, not all of the header dependencies are specified. If you are not a developer, and need a clean build, you should use build.com instead of the MMS utility. If you want SOCKS support on VMS, you must add SOCKS as a compilation definition, and the SOCKS library to the link command. However, instead of SOCKSifying Lynx for use behind a firewall, you are better off if you build Lynx normally, and set up Lynx to use a proxy server (see below). You instead can SOCKSify the proxy server, and it will handle all clients, not just Lynx. IV. Compile instructions -- Win32 (Windows95/NT) The original Win32 port was built with Borland C++ 4.52, but later versions reportedly can be used. Before compiling the Lynx sources, you need a curses library, and it is recommended that you have the zlib library. Get pdcurses2.3 from "http://www.lightlink.com/hessling/". I have modified it so that mouse support is no longer broken for Lynx (see "http://www.fdisk.com/doslynx/"). You will want to get zlib from "http://www.cdrom.com/pub/infozip/zlib/". Compile these libraries, and put them in a convenient place (pdcurses inside the Lynx directory). Unpack the latest Lynx source distribution, and make an obj directory under the source root to contain the compile output. Copy in your IDE file. A sample IDE file and helper libraries are available at "http://www.fdisk.com/doslynx/wlynx/source/". First build the .h files in src\chrtrans using "MAKEW32.BAT". Double check for new .tbl files; hand edit in any new ones, and then do "makew32". Jump into Borland C++, load the project (IDE file) and compile Lynx. Alternately, after compiling the chartrans tables, you can come back to the top directory and compile manually, i.e., do "make -f makefile.w32". I also have a binary available at "http://www.fdisk.com/doslynx/". This binary was compiled with pdcurses 2.3, hacked so win32 mouse support works, and with zlib, so Lynx can do gzip routines internally. More hints and information can be found in "http://www.fdisk.com/doslynx/lynxport.htm". -- 1997/10/12 - W. Buttles It is possible to compile under the cygwin32 system, which will allow you to use the configure script described above for Unix. Type, for example, "./configure --with-screen=slang --with-libz" in a Dos window running the cygwin bash$ shell. You also have the choice of using either pdcurses or slang. See "http://www.flora.org/lynx-dev/html/month1097/msg00559.html" and "http://www.flora.org/lynx-dev/html/month1097/msg00186.html", and other messages along those threads. You will have to make a minor alteration to HTTCP.c (change delay to 30 seconds) and modify HTFILE.c (concerning getgroups). You will need a launch program to call helper applications. V. Compile instructions -- 386 DOS Compiling for DOS with DJGPP is a multistep procedure. First install the c compiler and its libraries. DJGPP, as distributed from the usual DJGPP archives, will not successfully compile lynx. You need to "stubedit" your "cc1.exe" file. The following parameters have worked successfully: minstack=800k, bufsize=64k. To accomplish this, move to the djgpp\bin directory and type the command: "stubedit cc1.exe bufsize=64k minstack=800k". Or do it interactively with the command: "stubedit cc1.exe". (see "http://www.flora.org/lynx-dev/html/month0897/msg00145.html"). Unpack the source code using a DOS program like UNZIP386. If you are using PKUNZIP to unpack the .zip archive, you must use the -d command line switch to restore the directory structure contained in the archive, i.e., do "pkunzip -d lynx-cur.zip". No switch is required if you use unzip386 or unzip. If you are trying to compile the 386DOS port under a Win95/NT DOS shell, be sure to unpack the source with a DOS program so that all directories will be adjusted to the DOS 8.3 file format necessary for compiling with DJGPP. Do NOT use Winzip, because that will create long filenames that will not be recognized by DJGPP tools. If you wish to compile with "USE_ZLIB" (recommended), you must have the zlib library. Get the source from "http://www.cdrom.com/pub/infozip/zlib/" and compile it. Put libz.a in the lib subdirectory of DJGPP, and put zlib.h and zconf.h in the include subdirectory. In addition to the files in the Lynx distribution, you will need a curses package and a TCP package. You can use PDCurses (available at "http://www.lightlink.com/hessling/") and the DJGPP port of WATTCP (available in two different versions at "ftp://neonatal.sm.ic.ac.uk/" and in "http://www.fdisk.com/doslynx/wlynx/source/djgpp.zip"). You can also use slang ("ftp://space.mit.edu/pub/davis/slang") as your curses library. It has not been fully ported to DOS yet, however. See "http://www.flora.org/lynx-dev/html/month1097/msg00390.html". You need to compile these before you go any further. If you wish to use the beta version of PDCurses 2.3, you need to first apply a patch (available at "http://www.flora.org/lynx-dev/html/month0997/msg00441.html"). If you have trouble applying the patch, we recommend that you use the "patch" program, ("http://www.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/pat25b.zip"). To read the Unix man style documentation, use, for example, "less" ("http://www.simtel.net/pub/simtelnet/gnu/djgpp/v2gnu/lss332b.zip"). Compile or place your compiled PDCurses library in lynx2-*/curses, and compile or place your compiled WATTCP library in lynx2-*/djgpp/tcplib. Move to the "lynx2-*/WWW/Library/djgpp" directory and do "make". This should compile libwww.a. Next move to the "lynx2-*/src/chrtrans" directory and do "make -f makefile.dos" to compile the character tables. Then move to the "lynx2-*/src" directory and do "make -f makefile.dos". If all goes well, you will have a lynx.exe file. If you have trouble, check to be sure djgpp.env is the way it came in the original package. To test Lynx_386 you must have a packet driver installed. The simplest method is to use a null packet driver that just allows Lynx to start up, but doesn't do anything else. One such executable driver has been posted, uuencoded, to the lynx-dev mailing list: "msg00031.html", "msg00057.html", and "msg00066.html" under "http://www.flora.org/lynx-dev/html/month0198/". Start the dummy packet driver with "nullpkt 0x60", and take it out of memory with "nullpkt -u". You can also use slip8250.com. See the CRYNWR package "http://www.simtel.net/pub/simtelnet/msdos/pktdrvr/pktd11.zip". Usage is "slip8250 0x60", but you may have to invoke it as, for example, "slip8250 0x60 6 3 0x2F8" so that it uses COM2 and IRQ 3, in order to avoid an IRQ conflict with a mouse or some other device. Another packet driver is slipper.exe, which is available from many sites, including "ftp://jazz.trumpet.com.au/slipper". To remove it from memory use termin.com (usage "termin 0x60"), available in the CRYNWR package. To connect over a dialup PPP connection you need dosppp or klos' pppshare. (Find at "http://www.simtel.net/pub/simtelnet/msdos/pktdrvr/dosppp05.zip" and "ftp://ftp.klos.com/demo/pppshare.exe".) See "http://www.fdisk.com/doslynx/lynxport.htm" for more hints and some precompiled libraries. One problem you can run into is when editing userdefs.h and lynx.cfg, which have unix-style end of lines. You would be well advised to use an editor that can handle end of lines terminated with a single LF character. You can also unpack the source code using unzip386 or unzip with the -a switch to convert unix LF to dos CRLF. That will make texts more readable under DOS. If you compile lynx regularly, you may automate the procedure by creating a batch file such as the following. cd djgpp\tcplib\obj make cd ..\..\www\library\djgpp make cd ..\..\..\src\chrtrans make -f makefile.dos cd ..\..\..\src make -f makefile.dos strip lynx.exe cd .. This batch file expects the DJGPP port of WATTCP to be installed in the lynx2-* directory. Place a copy of this batch file, named "djgpp.bat", in the lynx2-* directory, move to that directory and type "djgpp". A more complete batch file with error checking and annotation can be found at: "http://www.flora.org/lynx-dev/html/month1197/msg00250.html". -- 1997/9/29 - D. Kaufman -- 1997/10/3 - B. Schiavo VI. General installation instructions Once you have compiled Lynx, test it out on "lynx_help/about_lynx.html". You shouldn't need to install Lynx to test it. Once you are satisfied that it works, go ahead and install Lynx. For Unix, type "make install". For VMS, you need to have the executable in a public place, make it accessible, define it as a foreign command, and copy lynx.cfg to "Lynx_Dir". Look at lynx.com in the samples directory as a model for installing Lynx. To include lynx.hlp in the system HELP library, use the command: "$ library/replace sys$help:helplib.hlb lynx.hlp". Local copies of the Lynx online help should be made accessible in response to the Lynx 'h'elp command by defining HELPFILE in userdefs.h and/or lynx.cfg to an appropriate file://localhost/path URL. On Unix, all you need to do is type "make install-help." If you are installing manually, copy the files "COPYHEADER" and "COPYING" into the lynx_help directory BEFORE moving the lynx_help tree to its final location. These files are referenced hypertextually from help documents. Find tips for installing the help files at "http://www.irm.nara.kindai.ac.jp/lynxdev/README.help". If you have old, pre-existing bookmark files from earlier versions of Lynx, those files may have to be updated. Conversion may just consist of adding one META line near the top, or may require creating new book- mark files and editing in bookmarks from outdated files. IMPORTANT! Be sure you have read the warnings about setting up an anonymous account with Lynx if you plan to give public access to Lynx. After applying patches or editing files to correct for an unsuccessful build, be certain to do a "make clean" (or "make distclean" for those using auto-configure) before attempting to compile again. If something doesn't work, or you can't get Lynx to even compile, or you don't understand what one of the defines means, read the PROBLEMS file, and the README.defines and *.announce files in the docs subdirectory. The docs/CHANGES* files record the entire development history of Lynx and are an invaluable resource for understanding how Lynx should perform. If you still have difficulties, send an email message to the Lynx-Dev mailing list (see the README file). Try to include pertinent information about your system, the OS you are using, the name and version of your compiler, which curses library you are using and the compile-time errors. Be sure to say what version and image-number (alternately the top date of the CHANGES file) of Lynx you are trying to build. VII. Setting environment variables before running Lynx (optional) 1. Unix and VMS To set your site's NTTP server as the default host for news reading and posting via Lynx, set the environment variable NNTPSERVER so that it points to its Internet address. The variable "NNTPSERVER" is used to specify the host which will be used as the default for news URLs. UNIX setenv NNTPSERVER "news.server.dom" VMS define/system NNTPSERVER "news.server.dom" The environment variables "ORGANIZATION" or "NEWS_ORGANIZATION", if set, will be used for the Organization: header in news postings. (On Unix, Lynx also checks for an /etc/organization file.) The environment variable "LYNX_CFG", if set, will override the default location and name of the global configuration file (lynx.cfg) that was defined via the constant "LYNX_CFG_FILE" in userdefs.h. See userdefs.h for more information. The environment variable "LYNX_TEMP_SPACE", if set, will override the default path prefix for temporary files that was defined via the constant "TEMP_SPACE" in userdefs.h. See userdefs.h for more information. The environment variable "LYNX_SAVE_SPACE", if set, will override the default path prefix for files saved to disk that was defined via the constant "SAVE_SPACE" in lynx.cfg. See lynx.cfg for more information. The variable "WWW_HOME", if set, will override the default startup URL specified in any of the configuration files. Lynx still supports use of gateway servers, with the servers specified via the variables "WWW_access_GATEWAY", where "access" is lower case and can be "http", "ftp", "gopher" or "wais". Most of the gateway servers have been discontinued, but "http://www.w3.org:8001" is available for wais searches (note that you do not include a terminal '/' for gateways, but do for proxies; see below). Lynx version 2.2 and beyond supports the use of proxy servers that can act as firewall gateways and caching servers. They are preferable to the older gateway servers. Each protocol used by Lynx can be mapped separately using PROTOCOL_proxy environment variables of the form: UNIX setenv http_proxy "http://some.server.dom:port/" setenv https_proxy "http://some.server.dom:port/" setenv ftp_proxy "http://some.server.dom:port/" setenv gopher_proxy "http://some.server.dom:port/" setenv news_proxy "http://some.server.dom:port/" setenv newspost_proxy "http://some.server.dom:port/" setenv newsreply_proxy "http://some.server.dom:port/" setenv snews_proxy "http://some.server.dom:port/" setenv snewspost_proxy "http://some.server.dom:port/" setenv snewsreply_proxy "http://some.server.dom:port/" setenv nntp_proxy "http://some.server.dom:port/" setenv wais_proxy "http://some.server.dom:port/" setenv finger_proxy "http://some.server.dom:port/" setenv cso_proxy "http://some.server.dom:port/" VMS define "http_proxy" "http://some.server.dom:port/" define "https_proxy" "http://some.server.dom:port/" define "ftp_proxy" "http://some.server.dom:port/" define "gopher_proxy" "http://some.server.dom:port/" define "news_proxy" "http://some.server.dom:port/" define "newspost_proxy" "http://some.server.dom:port/" define "newsreply_proxy" "http://some.server.dom:port/" define "snews_proxy" "http://some.server.dom:port/" define "snewspost_proxy" "http://some.server.dom:port/" define "snewsreply_proxy" "http://some.server.dom:port/" define "nntp_proxy" "http://some.server.dom:port/" define "wais_proxy" "http://some.server.dom:port/" define "finger_proxy" "http://some.server.dom:port/" define "cso_proxy" "http://some.server.dom:port/" (Encase *BOTH* strings in double-quotes to maintain lower case for the PROTOCOL_proxy variable and for the http access type; include /system if you want proxying for all clients on your system.) If you wish to override the use of a proxy server for specific hosts or entire domains you may use the "no_proxy" environment variable. Here is an example use of "no_proxy": UNIX setenv no_proxy "host.domain.dom, domain1.dom, domain2" VMS define "no_proxy" "host.domain.dom, domain1.dom, domain2" You can include a port number in the no_proxy list to override use of a proxy server for the host accessed via that port, but not via other ports. For example, if you use "host.domain.dom:119" and/or "host.domain.dom:210", then news (port 119) URLs and/or any wais (port 210) searches on that host would be excluded, but http, ftp, and gopher services (if normally proxied) would still be included, as would any news or wais services on other hosts. If you wish to override the use of a proxy server completely (i.e., globally override any existing proxy variables), set the value of "no_proxy" to "*". Note that Lynx treats file URLs on the local host as requests for direct access to the file, and does not attempt ftp if that fails. It treats both ftp URLs and file URLs on remote hosts as ftp URLs, and does not attempt direct file access for either. If ftp URLs are being proxied, file URLs on a remote host will be converted to ftp URLs before submission by Lynx to the proxy server, so no special procedure for inducing the proxy server to handle them is required. Other WWW clients may require that the http server's configuration file have "Map file:* ftp:*" in it to perform that conversion. The proxy and no_proxy variables also can be set at run time via lynx.cfg. 2. Win32 (95/NT) and 386 DOS (adapted from "readme.txt" by Wayne Buttles) HOME Where to keep the bookmark file and personal config files. LYNX_CFG The full path and filename for lynx.cfg TEMP or TMP Bookmarks are kept here with no HOME. Temp files here. TERM Set TERM=vt100 to stop that annoying terminal type message. USER Tells Lynx you are real instead of an anonymous user(?) 386 version only: WATTCP.CFG Where to find the wattcp.cfg file. (Depending on how you compiled libtcp.a, you may have to use WATCONF.) Define these in your batch file for running Lynx. For example, if your application line is "D:\win32\lynx.bat", lynx.bat may look like: @ECHO OFF set home=d:\win32 set temp=d:\tmp set lynx_cfg=d:\win32\lynx.cfg d:\win32\lynx.exe %1 %2 %3 %4 %5 VIII. Acknowledgment Thanks to the many volunteers who offered suggestions for making this installation manual as accurate and complete as possible. -- 1998/01/22 - H. Nelson