File:  [gforth] / gforth / INSTALL
Revision 1.11: download - view: text, annotated - select for diffs
Tue Nov 7 18:06:29 1995 UTC (27 years, 3 months ago) by anton
Branches: MAIN
CVS tags: HEAD
added copyright headers
changes to loadfilename & co. to make savesystem transparent to
 assertions and ~~

    1: You need gcc version 2.0 or later to compile gforth.
    3: First, type
    5: ./configure
    7: configure has the following useful parameters:
    8:   --prefix=PREFIX         install architecture-independent files in PREFIX
    9:                           [default: /usr/local]
   10:   --exec-prefix=PREFIX    install architecture-dependent files in PREFIX
   11:                           [default: same as prefix]
   12:   --enable-force-reg      Use explicit register declarations if they appear in
   13:                           the machine.h file. This can cause a good speedup,
   14:                           but also incorrect code with some gcc versions on
   15:                           some processors (default disabled).
   16:   --enable-direct-threaded      Force direct threading. This may not work on
   17:                                 some machines and may cause slowdown on others.
   18:                                 (default processor-dependent)
   19:   --enable-indirect-threaded    Force indirect threading. This can cause a
   20:                                 slowdown on some machines.
   21:                                 (default processor-dependent)
   22:   --with-debug     specifies option -g to compile with debug info (default)
   23:    --without-debug  omits the -g switch and creates smaller images on
   24:                     machines where strip has problems with gcc style
   25:                     debugging informations.
   26:   --help: tells you about other parameters.
   28: If you don't like the defaults for the installation directories, you
   29: should override them already during configure.  E.g., if you want to
   30: install in the /gnu hierarchy instead of in the default /usr/local
   31: hirarchy, say
   33: ./configure --prefix=/gnu
   35: After, configuration, type
   37: make
   39: If your make has trouble with the Makefile, "make gforth" might work.
   41: If your installed gcc isn't called "gcc" (e.g., called "gcc-2.6.1"), type
   43: make GCC=<whatever you call your gcc>
   45: instead.
   47: Now you can check whether your shiny new Forth system works. Say
   49: make test
   51: To make the documentation, type
   53: make -k html
   55: If everything is allright, you may want to install gforth. Type
   57: make install
   59: You have to make an entry in the info directory file manually. Also,
   60: you have to install and html yourself.
   63: A possible problem:
   65: You need to read this only if you see a message like
   67: "gforth: Cannot load nonrelocatable image (compiled for address 0x1234) at address 0x5678
   68: The Gforth installer should look into the INSTALL file"
   70: Gforth supports both relocatable and fixed-address images. If you load
   71: normal Forth code and save the image, you get a fixed-address
   72: image. Producing a relocatable image is more difficult.
   74: Therefore, Gforth has only a relocatable image of the kernel
   75: (, which is powerful enough to load the rest of
   76: Gforth. However, loading the rest takes a noticable amount of time. To
   77: avoid this delay (which would occur on every startup), the
   78: installation procedure produces an image fixed at an address
   79: determined at the Gforth run that produced the image. This
   80: fixed-address image is loaded by default. On most OSs this works,
   81: because the first chunk of memory is always allocated at the same
   82: address. If the address changes, you get the message above.
   84: An image address change can be caused by a change of the gforth
   85: executable, or by a change (upgrade) of the OS; in these cases you
   86: just have to rebuild and reinstall the fixed address image with
   88: rm; make; make install
   90: If you get such a message with a different address in place of the
   91: 0x5678 each time you try to start gforth, you cannot use fixed-address
   92: images on your OS. In this case, send us a message so that we start
   93: searching for a comfortable solution to this problem. In the
   94: meantime, start gforth with
   96: gforth -i startup.fs

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