--- gforth/INSTALL 1997/02/01 14:59:27 1.26 +++ gforth/INSTALL 1997/03/20 14:39:48 1.27 @@ -154,74 +154,3 @@ keep the old version for some time after You can deinstall this version of Gforth with 'make uninstall' and version foo with 'make uninstall VERSION=foo'. 'make uninstall' also tells you how to uninstall Gforth completely. - - - A Possible Problem - -You need to read this only if you see a message like - -... -The Gforth installer should look into the INSTALL file - -1) "gforth: Cannot load nonrelocatable image (compiled for address $1234) at address $5678 -The Gforth installer should look into the INSTALL file" - -Gforth supports both relocatable and fixed-address images. If you load -normal Forth code and save the image, you get a fixed-address -image. Producing a relocatable image is more difficult. - -Therefore, Gforth has only a relocatable image of the kernel -(kernel.fi), which is powerful enough to load the rest of -Gforth. However, loading the rest takes a noticable amount of time. To -avoid this delay (which would occur on every startup), the -installation procedure produces an image fixed at an address -determined at the Gforth run that produced the image. This -fixed-address image is loaded by default. On most OSs this works, -because the first chunk of memory is always allocated at the same -address. If the address changes, you get the message above. - -An image address change can be caused by a change of the gforth -executable, or by a change (upgrade) of the OS; in these cases you -just have to rebuild and reinstall the fixed address image with - -rm gforth.fi; make gforth.fi; make install - -If you get such a message with a different address in place of the -$5678 each time you try to start gforth, you cannot use fixed-address -images on your OS. In this case, send us a message so that we start -searching for a comfortable solution to this problem. In the -meantime, start gforth with - -gforth -i kernel.fi startup.fs - -If the addresses changes by only a small amount (e.g. by one or two -pages), you can fix it by defining FUZZ (in config.h) to a number at -least two times the changes you observe (0x4000 is a good idea, this -is four 4k pages) and recompile. We do this for the DJGPP port for -DOS, because the start address there changes by one or two pages, and -it helps us to keep the DOS people happy without investing too much -work in a braindead environment. - - -2) "%s: Checksum of image ($13579b) does not match the executable ($2468a) -The Gforth installer should look into the INSTALL file" - -A fixed-address image is not only fixed with respect to its base -address, but also with respect to certain addresses in the gforth -executable and the threading method. These things are encoded in a -checksum. - -If the checksum of the executable and the checksum of the image are -not equal, you get the message above. This can be caused, e.g., by -trying to run an image produced for a direct threading system on an -indirect threaded system. - -Chances are that you unintentionally tried to execute an image from -the wrong directory. As a remedy, you can specify Gforth's search -path with the "-p" command line option and with the GFORTHPATH -environment variable. - -On the other hand, if you need to solve the problem by creating a new -fixed-address image, you can use the steps described above. - -