| Preliminary version |
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| You need gcc version 2.0 or later to compile gforth. |
You need gcc version 2.0 or later to compile gforth. |
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| First, type |
First, type |
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| configure |
./configure |
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| configure has the following useful parameters: |
configure has the following useful parameters: |
| -direct-threaded: setup for a direct threaded interpreter; this is faster |
--prefix=PREFIX install architecture-independent files in PREFIX |
| on many machines, but needs special support. Unsupported machines will |
[default: /usr/local] |
| ingore this switch. On some CISC machines, direct threading isn't an |
--exec-prefix=PREFIX install architecture-dependent files in PREFIX |
| advantage over indirect threading. |
[default: same as prefix] |
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--enable-force-reg Use explicit register declarations if they appear in |
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the machine.h file. This can cause a good speedup, |
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but also incorrect code with some gcc versions on |
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some processors (default disabled). |
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--enable-direct-threaded Force direct threading. This may not work on |
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some machines and may cause slowdown on others. |
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(default processor-dependent) |
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--enable-indirect-threaded Force indirect threading. This can cause a |
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slowdown on some machines. |
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(default processor-dependent) |
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--with-debug specifies option -g to compile with debug info (default) |
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--without-debug omits the -g switch and creates smaller images on |
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machines where strip has problems with gcc style |
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debugging informations. |
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--help: tells you about other parameters. |
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| -without-debug: omits the -g switch and creates smaller images on machines |
If you don't like the defaults for the installation directories, you |
| where "strip" has problems with gcc style debugging informations. |
should override them already during configure. E.g., if you want to |
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install in the /gnu hierarchy instead of in the default /usr/local |
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hierarchy, say |
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| --help: tells you about other parameters. |
./configure --prefix=/gnu |
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Moreover, if your GCC is not called gcc (but, e.g., gcc-2.7.1), you |
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should say so during configuration. E.g.: |
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| Now type |
env CC=gcc-2.7.1 ./configure |
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You can also pass additional options to gcc in this way, e.g., if you |
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want to generate an a.out executable under Linux with gcc-2.7.0: |
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env "CC=gcc -b i486-linuxaout -V 2.7.0" ./configure |
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After, configuration, type |
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| make |
make |
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| If your make has trouble with the Makefile, "make gforth" might work. |
Now you can check whether your shiny new Forth system works. Say |
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make test |
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You can run some benchmarks with |
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make bench |
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and compare them with the results in Benchres and in the manual. |
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If everything is all right, you may want to install gforth. Type |
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make install |
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You have to make an entry in the info directory file manually. |
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For paper documentation, print gforth.ps (a Postscript file (300dpi |
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fonts, i.e., it works, but does not produce best quality on better |
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printers)), or say |
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make gforth.dvi |
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and print the resulting file gforth.dvi. You can also get the |
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documentation in HTML format by typing |
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make html |
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If you prefer plain ASCII documentation, just concatenate the files |
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gforth.info-* ('cat gforth.info-*' under Unix). |
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Preloading installation-specific code |
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If you want to have some installation-specific files loaded when |
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Gforth starts (e.g., an assembler for your processor), put commands |
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for loading them into /usr/local/share/gforth/site-forth/site-init.fs |
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(if the commands work for all architectures) or |
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/usr/local/lib/gforth/site-forth/site-init.fs (for |
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architecture-specific commands); |
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/usr/local/lib/gforth/site-forth/site-init.fs takes precedence if both |
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files are present (unless you change the search path). The file names |
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given above are the defaults; if you have changed the prefix, you have |
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to replace "/usr/local" in these names with your prefix. |
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By default, the installation procedure creates an empty |
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/usr/local/share/gforth/site-forth/site-init.fs if there is no such |
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file. |
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If you change the site-init.fs file, you should run "make install" |
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again for the changes to take effect (Actually, the part of "make |
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install" starting with "rm gforth.fi" is sufficient). |
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Multiple Versions and Deinstallation |
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Several versions of Gforth can be installed and used at the same |
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time. Version `foo' can be invoked with `gforth-foo'. We recommend to |
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keep the old version for some time after a new one has been installed. |
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You can deinstall this version of Gforth with 'make uninstall' and |
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version foo with 'make uninstall VERSION=foo'. 'make uninstall' also |
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tells you how to uninstall Gforth completely. |
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A Possible Problem |
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You need to read this only if you see a message like |
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"gforth: Cannot load nonrelocatable image (compiled for address 0x1234) at address 0x5678 |
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The Gforth installer should look into the INSTALL file" |
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Gforth supports both relocatable and fixed-address images. If you load |
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normal Forth code and save the image, you get a fixed-address |
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image. Producing a relocatable image is more difficult. |
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Therefore, Gforth has only a relocatable image of the kernel |
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(kernal.fi), which is powerful enough to load the rest of |
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Gforth. However, loading the rest takes a noticable amount of time. To |
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avoid this delay (which would occur on every startup), the |
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installation procedure produces an image fixed at an address |
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determined at the Gforth run that produced the image. This |
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fixed-address image is loaded by default. On most OSs this works, |
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because the first chunk of memory is always allocated at the same |
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address. If the address changes, you get the message above. |
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An image address change can be caused by a change of the gforth |
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executable, or by a change (upgrade) of the OS; in these cases you |
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just have to rebuild and reinstall the fixed address image with |
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rm gforth.fi; make gforth.fi; make install |
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| If your installed gcc isn't called "gcc" (eg. called "gcc-2.6.1"), type |
If you get such a message with a different address in place of the |
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0x5678 each time you try to start gforth, you cannot use fixed-address |
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images on your OS. In this case, send us a message so that we start |
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searching for a comfortable solution to this problem. In the |
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meantime, start gforth with |
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| make CC=<whatever you call your gcc> |
gforth -i kernal.fi startup.fs |
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| instead. |
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