| You need DJ Delorie's port of GCC to DOS (DJGPP) to compile Gforth. DJGPP |
You need DJ Delorie's port of GCC to DOS (DJGPP 2.0) to compile |
| provides a DOS extender (GO32) that allows to use the 32-bit features of |
Gforth. DJGPP provides a DPMI client that allows to use the 32-bit |
| the 80386, but on the other hand it requires at least an 386. |
features of the 80386, but on the other hand it requires at least a |
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386. A DPMI host is also part of the DJGPP 2.0 package, this is |
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required if you don't have a DPMI host yourself (Windows/OS/2/Linux |
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DOS-box, Quemm or others). |
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| Gforth hasn't been tested with EMX, using EMX will require some changes in |
Gforth hasn't been tested with EMX, using EMX will require some changes in |
| the console IO part. If you don't want to install this package (quite |
the console IO part. If you don't want to install the DJGPP package (quite |
| large), look for a binary distribution of Gforth for DOS. You must have a |
large), look for a binary distribution of Gforth for DOS. You must have a |
| version of GNU make, because DOS make programs are likely to have problems |
version of GNU make, because DOS make programs are likely to have problems |
| with the Makefile. If you want to change Gforth, you may need GNU m4, too. |
with the Makefile. If you want to change Gforth, you may need GNU m4, too. |
| |
|
| configure |
configure |
| |
|
| There are no options for configure, because DOS can't execute a real |
configure has the following useful parameters: |
| configure script, all the configuring stuff is done on a real operating |
--enable-force-reg Use explicit register declarations if they appear in |
| system. If you want to change something (e.g. use FORCE_REG or |
the machine.h file. This can cause a good speedup, |
| DIRECT_THREADED), you have to change the makefile yourself. Be careful! DOS |
but also incorrect code with some gcc versions on |
| command line arguments are limited to an overall size of 126 bytes, so |
some processors (default disabled). |
| adding a new define in the makefile will make it too long. In this case add |
--enable-direct-threaded Force direct threading. This may not work on |
| the define at the beginning of machine.h instead, or create a file |
some machines and may cause slowdown on others. |
| containing all extra options, and add @<filename> to the defines (move the |
(default processor-dependent) |
| -DDEFAULTPATH-define into this file, and it will fit into the command line). |
--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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|
| After covering all inconveniences, type |
After covering all inconveniences, type |
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| make gforth |
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| and after this finishes, type |
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| make |
make |
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|
| We apologize for the inconveniences, we did not invent the 640k limit |
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| that prevents doing make straight forward. You may run out of memory |
|
| anyway, because GCC eats up lots of it while compiling engine.c. Keep |
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| enough space free on your harddisk to allow GCC to swap. |
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| If you want to add some defines like -DFORCE_REG, type |
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| make gforth XDEFINES=-DFORCE_REG |
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| instead. |
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| Now you can check whether your shiny new Forth system works. Say |
Now you can check whether your shiny new Forth system works. Say |
| |
|
| make test |
make test |
