From c966c8dcc56ee9a44436527e55879c44a125ba82 Mon Sep 17 00:00:00 2001 From: Rich Murphey Date: Tue, 14 May 1996 20:31:53 +0000 Subject: [PATCH] This is a guide to installing the linux emulator with specific instructions on installing and running Mathematica's Linux binary. Written by Brian N. Handy, Chuck Robey and myself. Reviewed by: jordan --- handbook/Makefile | 4 +- handbook/authors.sgml | 10 +- handbook/handbook.sgml | 3 +- handbook/linuxemu.sgml | 663 +++++++++++++++++++++++++++++++++++++++++ handbook/sections.sgml | 3 +- 5 files changed, 678 insertions(+), 5 deletions(-) create mode 100644 handbook/linuxemu.sgml diff --git a/handbook/Makefile b/handbook/Makefile index c8d93129b6..7416a6cbc2 100644 --- a/handbook/Makefile +++ b/handbook/Makefile @@ -1,4 +1,4 @@ -# $Id: Makefile,v 1.11 1996-05-01 20:10:46 phk Exp $ +# $Id: Makefile,v 1.12 1996-05-14 20:31:49 rich Exp $ SRCS= authors.sgml basics.sgml bibliography.sgml boothelp.sgml SRCS+= booting.sgml contrib.sgml crypt.sgml ctm.sgml current.sgml dialup.sgml @@ -10,6 +10,6 @@ SRCS+= mirrors.sgml nfs.sgml nutshell.sgml pgpkeys.sgml SRCS+= porting.sgml ports.sgml ppp.sgml printing.sgml quotas.sgml relnotes.sgml SRCS+= routing.sgml scsi.sgml sections.sgml sio.sgml SRCS+= skey.sgml slipc.sgml slips.sgml stable.sgml submitters.sgml sup.sgml -SRCS+= synching.sgml troubleshooting.sgml userppp.sgml uart.sgml +SRCS+= synching.sgml troubleshooting.sgml userppp.sgml uart.sgml linuxemu.sgml .include diff --git a/handbook/authors.sgml b/handbook/authors.sgml index 56a387947f..afac1de0bc 100644 --- a/handbook/authors.sgml +++ b/handbook/authors.sgml @@ -1,4 +1,4 @@ - + + or one of the numerous &submitters; &troubleshooting; &kerneldebug; + &linuxemu; FreeBSD internals &booting; &memoryuse; diff --git a/handbook/linuxemu.sgml b/handbook/linuxemu.sgml new file mode 100644 index 0000000000..7419f847df --- /dev/null +++ b/handbook/linuxemu.sgml @@ -0,0 +1,663 @@ + + + +Linux Emulation + +

Contributed by &a.brian and &a.rich; + +How to install the Linux emulator + +

Linux emulation in FreeBSD has reached a point where it's possible +to run a large fraction of Linux binaries in both a.out and ELF +format. The linux emulation in the -STABLE branch is capable of +running Linux DOOM and Mathematica; the version present in +FreeBSD-CURRENT is vastly more capable and runs all these as well as +Quake, Abuse, IDL, netrek for Linux and a whole host of other +programs. + +There are some Linux-specific operating system features that are not +supported on FreeBSD. Linux binaries will not work on FreeBSD if they +use the Linux /proc filesystem (which is different from the optional +FreeBSD /proc filesystem) or i386-specific calls, such as enabling +virtual 8086 mode. + +

To tell whether your kernel is configured for Linux +compatibility simply run any Linux binary. If it +prints the error message + +linux-executable: Exec format error. Wrong Architecture. + +then you do not have linux compatibility support and +you need to configure and install a new kernel. + +Depending on which version of FreeBSD you are running, how you get +Linux-emulation up will vary slightly: + +Installing Linux Emulation in 2.1-STABLE + +

The GENERIC kernel in 2.1-stable is not configured for linux +compatibility so you you must reconfigure your kernel for it. There +are two ways to do this: 1. linking the emulator statically in the +kernel itself and 2. configuring your kernel to dynamically load the +linux loadable kernel module (LKM). + +

To enable the emulator, add the following to your configuration file +(c.f. /sys/i386/conf/LINT): + + +options "COMPAT_LINUX" + + +If you want to run doom or other applications +that need shared memory +also add the following. + + +options SYSVSHM + + +The linux system calls require 4.3 BSD system call compatibility. So +make sure you have the following. + + +options "COMPAT_43" + + + +If you prefer to statically link the emulator in the kernel rather than +use the loadable kernel module (LKM), then add + + +options LINUX + + +Then run config and install the new kernel as described in the + +section. + +If you decide to use the LKM you must also install the loadable +module. A mismatch of versions between the kernel and loadable +module can cause the kernel to crash, so the safest thing to do is to +reinstall the LKM when you install the kernel. + + +cd /usr/src/lkm/linux +make all install + + +Once you have installed the kernel and the LKM, you can invoke + + +linux + + +as root to load the LKM. To see whether the LKM is loaded, run + + +modstat + + +which should produce output something like this. + + +Type Id Off Loadaddr Size Info Rev Module Name +EXEC 0 3 f0baf000 0018 f0bb4000 1 linux_emulator + + +You can cause the LKM to be loaded when the system boots in either of +two ways. On FreeBSD-CURRENT and FreeBSD-STABLE enable it in +/etc/sysconfig + + +linux=YES + + +by changing it from NO to YES. FreeBSD 2.1 RELEASE and earlier do not +have such a line and on those you will need to edit /etc/rc.local to +add the following line. + + +linux + + + +Installing Linux Emulation in 2.2-CURRENT + +

In -current it is no longer necessary to specify options "LINUX" +or options "COMPAT_LINUX". Linux emulation is done with an LKM +(``Loadable Kernel Module'') so it can be installed on the fly without +having to reboot. You'll need the following things in your startup files, +however: + + In /etc/sysconfig, you need the following line: + +linux=YES + + This, in turn, triggers the following action in /etc/rc.i386: + +# Start the Linux binary emulation if requested. +if [ "X${linux}" = X"YES" ]; then + echo -n ' '; linux + # XXX BOGUS - Linux script shouldn't make any output on success +fi + + + +

If you want to verify it's running, modstat will do that: + + +% modstat +Type Id Off Loadaddr Size Info Rev Module Name +EXEC 0 4 f09e6000 001c f09ec010 1 linux_mod +% + + +However, there have been reports that this fails on some +FreeBSD-current systems. If for some reason you cannot load the linux +LKM, then statically link the emulator in the kernel by adding + + +options LINUX + + +to your kernel config file. Then run config and install the new +kernel as described in . + +Installing Linux Runtime Libraries + +Installing using the linux_lib port + +

Most linux applications use shared libraries, so you're still not +done untill you install the shared libraries. It's possible to do +this by hand, however, it's vastly simpler to just grab the +linux_lib port: + + +% cd /usr/ports-current/emulators/linux_lib +% make all install + + + +and you should have a working linux emulator. Legend (and the mail +archives :-) seems to hold that Linux emulation works best with +linux binaries linked against the ZMAGIC libraries; QMAGIC libraries +(such as those used in Slackware V2.0) may tend to give the +Linuxulator heartburn. As of this writing (March 1996) ELF emulation +is still in the formulative stages but seems to work pretty well. Also, +expect some programs to complain about incorrect minor versions. In +general this doesn't seem to be a problem. + +Installing libraries manually + +

If you don't have the ``ports'' distribution, you can install the +libraries by hand instead. You'll need the Linux shared libraries +that the program depends on and the runtime linker. Also, you will +need to create a "shadow root" directory, /compat/linux, for Linux +libraries on your FreeBSD system. Any shared libraries opened by +Linux programs run under FreeBSD will look in this tree first. So, if +a Linux program loads, for example, /lib/libc.so, FreeBSD will first +try to open /compat/linux/lib/libc.so, and if that does not exist then +it will try /lib/libc.so. Shared libraries should be installed in the +shadow tree /compat/linux/lib rather than the paths that the Linux +ld.so reports. + + +FreeBSD-current works slightly differently with respect to +/compat/linux. On -current, all files, not just libraries, are +searched for from the ``shadow root'' /compat/linux. + +Generally, you will need to look for the shared libraries that Linux +binaries depend on only the first few times that you install a Linux +program on your FreeBSD system. After a while, you will have a sufficient +set of Linux shared libraries on your system to be able to run newly +imported Linux binaries without any extra work. + +How to install additional shared libraries + +

What if you install the linux_lib port and your application still +complains about missing shared libraries? How do you know which +shared libraries Linux binaries need, and where to get them? +Basically, there are 2 possibilities (when following these +instructions: you will need to be root on your FreeBSD system to do +the necessary installation steps). + +

If you have access to a Linux system, see what shared libraries +it needs, and copy them to your FreeBSD system. Example: you have +just ftp'ed the Linux binary of Doom. Put it on the Linux +system you have access to, and check which shared libraries it +needs by running `ldd linuxxdoom': + + +% ldd linuxxdoom +libXt.so.3 (DLL Jump 3.1) => /usr/X11/lib/libXt.so.3.1.0 +libX11.so.3 (DLL Jump 3.1) => /usr/X11/lib/libX11.so.3.1.0 +libc.so.4 (DLL Jump 4.5pl26) => /lib/libc.so.4.6.29 + + +

You would need go get all the files from the last column, and +put them under /compat/linux, with the names in the first column +as symbolic links pointing to them. This means you eventually have +these files on your FreeBSD system: + +/compat/linux/usr/X11/lib/libXt.so.3.1.0 +/compat/linux/usr/X11/lib/libXt.so.3 -> libXt.so.3.1.0 +/compat/linux/usr/X11/lib/libX11.so.3.1.0 +/compat/linux/usr/X11/lib/libX11.so.3 -> libX11.so.3.1.0 +/compat/linux/lib/libc.so.4.6.29 +/compat/linux/lib/libc.so.4 -> libc.so.4.6.29 + + +

Note that if you already have a Linux shared library with a +matching major revision number to the first column of the 'ldd' +output, you won't need to copy the file named in the last column to +your system, the one you already have should work. It is advisable to +copy the shared library anyway if it is a newer version, though. You +can remove the old one, as long as you make the symbolic link point to +the new one. So, if you have these libraries on your system: + +/compat/linux/lib/libc.so.4.6.27 +/compat/linux/lib/libc.so.4 -> libc.so.4.6.27 + + +and you find a new binary that claims to require a later version +according to the output of ldd: + +libc.so.4 (DLL Jump 4.5pl26) -> libc.so.4.6.29 + + +If it's only one or two versions out of date in the in the trailing +digit then don't worry about copying /lib/libc.so.4.6.29 too, because +the program should work fine with the slightly older version. +However, if you like you can decide to replace the libc.so anyway, and +that should leave you with: + +/compat/linux/lib/libc.so.4.6.29 +/compat/linux/lib/libc.so.4 -> libc.so.4.6.29 + + +

Please note that the symbolic link mechanism is only +needed for Linux binaries, the FreeBSD runtime linker takes care of +looking for matching major revision numbers itself, you don't need to +worry about that. + +Configuring the ld.so -- for FreeBSD-current +only + +

This section applies only to FreeBSD-current only. Those running +FreeBSD-stable should skip this section. + +

Finally, if you run FreeBSD-current you must make sure that you +have the Linux runtime linker and its config files on your system. You +should copy these files from the Linux system to their appropriate +place on your FreeBSD system (to the /compat/linux tree): + +/compat/linux/lib/ld.so +/compat/linux/etc/ld.so.config + + +

If you don't have access to a Linux system, you should get the +extra files you need from various ftp sites. Information on where to +look for the various files is appended below. For now, let's assume +you know where to get the files. + +

+Retrieve the following files (all from the same ftp site to avoid any +version mismatches), and install them under /compat/linux +(i.e. /foo/bar is installed as /compat/linux/foo/bar): + +/sbin/ldconfig +/usr/bin/ldd +/lib/libc.so.x.y.z +/lib/ld.so + + +

ldconfig and ldd don't necessarily need to be under /compat/linux, +you can install them elsewhere in the system too. Just make sure they +don't conflict with their FreeBSD counterparts. A good idea would be +to install them in /usr/local/bin as ldconfig-linux and ldd-linux. +

+Create the file /compat/linux/etc/ld.so.conf, containing the +directories in which the Linux runtime linker should look +for shared libs. It is a plain text file, containing a directory +name on each line. /lib and /usr/lib are standard, you could +add the following: + +/usr/X11/lib +/usr/local/lib + + +

When a linux binary opens a library such as /lib/libc.so the +emulator maps the name to /compat/linux/lib/libc.so internally. All +linux libraries should be installed under /compat/linux (e.g. +/compat/linux/lib/libc.so, /compat/linux/usr/X11/lib/libX11.so, etc.) +in order for the emulator to find them. + +

Those running FreeBSD-current should run the Linux ldconfig program. + +% cd /compat/linux/lib +% /compat/linux/sbin/ldconfig + + +

Ldconfig is statically linked, so it doesn't need any shared +libraries to run. It creates the file /compat/linux/etc/ld.so.cache +which contains the names of all the shared libraries. It should rerun +to recreate this file whenever you install additional shared +libraries. + +On FreeBSD-stable do not install /compat/linux/etc/ld.so.cache or run +ldconfig becuase in FreeBSD-stable the syscalls are implemented +differently and ldconfig isn't needed or used. + +

You should now be set up for Linux binaries which only need a +shared libc. You can test this by running the Linux ldd on +itself. Suppose that you have it installed as ldd-linux, it should +produce something like: + +% ldd-linux `which ldd-linux` +libc.so.4 (DLL Jump 4.5pl26) => /lib/libc.so.4.6.29 + + +

This being done, you are ready to install new Linux binaries. +Whenever you install a new Linux program, you should check if it needs +shared libraries, and if so, whether you have them installed in the +/compat/linux tree. To do this, you run the Linux version ldd on the +new program, and watch its output. ldd (see also the manual page for +ldd(1)) will print a list of shared libraries that the program depends +on, in the form majorname (jumpversion) => fullname. + +

If it prints "not found" in stead of fullname it means that you +need an extra library. Which library this is, is shown in majorname, +which will be of the form libXXXX.so.N You will need to find a +libXXXX.so.N.mm on a Linux ftp site, and install it on your +system. The XXXX (name) and N (major revision number) should match; +the minor number(s) mm are less important, though it is advised to +take the most recent version. + +Configuring the host name resolver + +

If DNS does not work or you get the messages + + +resolv+: "bind" is an invalid keyword +resolv+: "hosts" is an invalid keyword + + + +then you need to configure a /compat/linux/etc/host.conf file +containing: + + +order hosts, bind +multi on + + + +where the order here specifies that /etc/hosts is searched first and +DNS is searched second. When /compat/linux/etc/host.conf isn't +installed linux applications find FreeBSD's /etc/host.conf and +complain about the incompatible FreeBSD syntax. You should remove +`bind,' if you have not configured a name-server using the +/etc/resolv.conf file. + +

Lastly, those who run FreeBSD-stable need to set an the +RESOLV_HOST_CONF environment variable so that applications will know +how to search the host tables. If you run FreeBSD-current you can +skip this. For the /bin/csh shell use: + +setenv RESOLV_HOST_CONF /compat/linux/etc/host.conf + + +For /bin/sh use: + +RESOLV_HOST_CONF=/compat/linux/etc/host.conf; export RESOLV_HOST_CONF + + +Finding the necessary files + +

Note: the information below is valid as of the time this document +was written, but certain details such as names of ftp sites, +directories and distribution names may have changed by the time you +read this. + +

Linux is distributed by several groups that make their own set +of binaries that they distribute. Each distribution has its own +name, like ``Slackware'' or ``Yggdrasil''. The distributions are +available on a lot of ftp sites. Sometimes the files are unpacked, +and you can get the individual files you need, but mostly they +are stored in distribution sets, usually consisting of subdirectories +with gzipped tar files in them. The primary ftp sites for the +distributions are: + +sunsite.unc.edu:/pub/Linux/distributions +tsx-11.mit.edu:/pub/linux/distributions + + +

+Some European mirrors: + +ftp.luth.se:/pub/linux/distributions +ftp.demon.co.uk:/pub/linux/distributions +src.doc.ic.ac.uk:/packages/linux/distributions + + +

For simplicity, let's concentrate on Slackware here. This +distribution consists of a number of subdirectories, containing +separate packages. Normally, they're controlled by an install +program, but you can retrieve files "by hand" too. First of all, you +will need to look in the "contents" subdir of the distribution. You +will find a lot of small text files here describing the contents of the +separate packages. The fastest way to look something up is to retrieve +all the files in the contents subdirectory, and grep through them for +the file you need. Here is an example of a list of files that you +might need, and in which contents-file you will find it by grepping +through them: + +Library Package +ld.so ldso +ldconfig ldso +ldd ldso +libc.so.4 shlibs +libX11.so.6.0 xf_lib +libXt.so.6.0 xf_lib +libX11.so.3 oldlibs +libXt.so.3 oldlibs + + +

So, in this case, you will need the packages ldso, shlibs, xf_lib +and oldlibs. In each of the contents-files for these packages, look +for a line saying ``PACKAGE LOCATION'', it will tell you on which `disk' +the package is, in our case it will tell us in which subdirectory we +need to look. For our example, we would find the following locations: + +Package Location +ldso diska2 +shlibs diska2 +oldlibs diskx6 +xf_lib diskx9 + + +

The locations called ``diskXX'' refer to the ``slakware/XX'' +subdirectories of the distribution, others may be found in the +``contrib'' subdirectory. In this case, we could now retrieve the +packages we need by retrieving the following files (relative to +the root of the Slackware distribution tree): + + +slakware/a2/ldso.tgz +slakware/a2/shlibs.tgz +slakware/x6/oldlibs/tgz +slakware/x9/xf_lib.tgz + + + +

Extract the files from these gzipped tarfiles in your +/compat/linux directory (possibly omitting or afterwards +removing files you don't need), and you are done. + +

See also: + +ftp.freebsd.org:pub/FreeBSD/2.0.5-RELEASE/xperimnt/linux-emu/README + +/usr/src/sys/i386/ibcs2/README.iBCS2 + + +How to Install Mathematica on FreeBSD + +

Contributed by &a.rich and &a.chuck + +This document shows how to install the Linux binary +distribution of Mathematica 2.2 on FreeBSD 2.1. + +

Mathematica supports Linux but not FreeBSD as it stands. So once +you have configured your system for Linux compatibility you have most +of what you need to run Mathematica. + +

For those who already have the student edition of +Mathematica for DOS the cost of upgrading to the Linux +version at the time this was written, March 1996, was +$45.00. It can be ordered directly from Wolfram at +(217) 398-6500 and paid for by credit card. + +Unpacking the Mathematica distribution +

The binaries are currently distributed by Wolfram on +CDROM. The CDROM has about a dozen tar files, each of +which is a binary distribution for one of the supported +architectures. The one for Linux is named LINUX.TAR. +You can, for example, unpack this into +/usr/local/Mathematica: + +cd /usr/local +mkdir Mathematica +cd Mathematica +tar -xvf /cdrom/LINUX.TAR + + +Obtaining your Mathematica Password +

Before you can run Mathematica you will have to obtain +a password from Wolfram that corresponds to your +`machine ID.' + +

Once you have installed the linux compatibility runtime +libraries and unpacked the mathematica you can obtain +the `machine ID' by running the program `mathinfo' in +the Install directory: + +cd /usr/local/Mathematica/Install +mathinfo + +this will print out something like: + +LINUX: 'ioctl' fd=3D3, typ=3D0x89(=89), num=3D0x27 not implemented +richc.isdn.bcm.tmc.edu=099845-03452-90255 + +where '9845-03452-90255' is your 'machine ID'. You can +ignore the message about the ioctl that is not +implemented. It won't prevent Mathematica from running +in any way and you can safely ignore it, though you +will see the message every time you run Mathematica. + +

When you register with Wolfram, either by email, phone +or fax, you'll give them the 'machine ID' and they will +respond with a corresponding password consisting of +groups of numbers. You need to add them both along +with the machine name and license number in your +mathpass file. + +You can do this by invoking: + +cd /usr/local/Mathematica/Install +math.install + +It will ask you to enter your license number and the +Wolfram supplied password. If you get them mixed up or +for some reason the math.install fails, That's OK, +because you can simply edit the file 'mathpass' in this +same directory to correct the info manually. + +

After getting past the password, math.install will ask +you if you accept their canned install defaults, or if +you want to use your own. If you are like us and +distrust all install programs, you probably want to +specify the actual directories. Beware. Although the +math.install program asks you to specify directories, +it won't create them for you, so you should perhaps +have a second window open with another shell so that +you can create them before you give them to the install +program. Or, if it fails, you +can create the directories and then restart the +math.install program. The directories we chose to +create beforehand and specify to math.install were: + +/usr/local/Mathematica/bin for binaries +/usr/local/Mathematica/man/man1 for man pages +/usr/local/Mathematica/lib/X11 for the XKeysymb file + +You can also tell it to use /tmp/math.record for the +system record file, where it puts logs of sessions. +After this math.install will continue on to +unpacking things and placing everything where it should +go. + +

The Mathematica Notebook feature is included separately, +as the X Front End, and you have to install it separately. +To get the X Front End stuff correctly installed, cd +into the /usr/local/Mathematica/FrontEnd directory and +executed the ./xfe.install shell script. You'll have +to tell it where to put things, but you don't have to +create any directories because it uses all the same +directories that had been created for math.install. +When it finished, there should be a new shell script in +/usr/local/Mathematica/bin called "mathematica". + +

Lastly, you need to modify each of the shell scripts that +Mathematica has installed. At the beginning of every shell script in +/usr/local/Mathematica/bin add the following line: + +XKEYSYMDB=/usr/local/Mathematica/lib/X11/XKeysymDB; export XKEYSYMDB + +This tells Mathematica were to find it's own version of the key +mapping file XKeysymDB. Without this you will get pages of error +messages about missing key mappings. + +On FreeBSD-stable you need to add the following as well: + +RESOLV_HOST_CONF=/compat/linux/etc/host.conf; export RESOLV_HOST_CONF + +This tells Mathematica to use the linux version of host.conf. This +file has a different syntax from FreeBSD's host.conf, so you'll get an +error message about /etc/host.conf if you leave this out. + +

You might want to also modify your /etc/manpath.config +file to read the new man directory, and you may need +to edit your .cshrc file to add + +/usr/local/Mathematica/bin + +to your path. + +

That's about all it takes, With this you should be able +to type "mathematica" and get a really slick looking +Mathematica Notebook screen up. Mathematica has included +the Motif user interfaces, but it's compiled in statically, +so you don't need the Motif libraries. Good luck doing this +yourself! + +Bugs + +

The Notebook front end is known to hang sometimes when reading +notebook files with an error messages similar to: + +File .../Untitled-1.mb appears to be broken for OMPR.257.0 + +We haven't found the cause for this, but it only affects the +Notebook's X window front end, not the mathematica engine itself. So +the command line interface invoked by 'math' is unaffected by this +bug. + +Acknowledgments + +

A well-deserved thanks should go to &a.sos; and &a.peter; +who made linux emulation what it is today, and Michael Smith who +drove these two guys like dogs to get it to the point where it runs +Linux binaries better than linux! :-) diff --git a/handbook/sections.sgml b/handbook/sections.sgml index c4a96a6ae2..688a104852 100644 --- a/handbook/sections.sgml +++ b/handbook/sections.sgml @@ -1,4 +1,4 @@ - + @@ -26,6 +26,7 @@ +