readme.amiga

早期freebsd实现

From:	"Lars Hecking" <[e-mail]>
Date:	Thu, 3 Dec 1992 17:56:24 -0400
Subject:      Gawk-2.14 -- Amiga-Port, the 2nd

Gawk on the Amiga has been compiled and tested using the Amiga port
of gcc by Markus Wild ([e-mail]). I recommend the use
of this compiler (at least v2.2.2) because the provided environment
(includes, libs, binutils) allows straight-forward porting of BSD/UNIX
programs. Gcc compiled programs access/emulate UNIX syscalls via a
shared library (ixemul.library); thus, only minimal changes to the
source are necessary. That release also provides a `sh'- command. If
no `sh'-command is available or another compiler is being used,
`config.h' and `Makefile' are to be created by hand. Since I'm afraid
that none of the Amiga-specific make-commands handles UNIX-style
makefiles correctly I suggest the use of Dennis Vadura's`dmake',
which is available on the Amiga (v3.6). I'm currently using dmake v3.8
(a hack) or GNU make v3.62 (another hack :), which even allows
to start multiple make jobs! Thanx to Markus!).

Machine Configuration	(obsoleted by gawk 2.16)
---------------------
Only copy the following into config/amiga:

Amiga under AmigaOS with gcc
DOPRNT_MISSING 1
ENVSEP ','
DEFPATH  ".,/usr/local/lib"
HAVE_UNDERSCORE_SETJMP 1
SRANDOM_PROTO 1
STDC_HEADERS 1

The gcc compiler and the compiled executables are working under
AmigaOS 1.2/1.3 as well as AmigaOS 2.x. However, some very special
functions of ixemul.library currently require AmigaOS 2.x to work
properly.


How to compile (obsoleted by gawk 2.16)
--------------
Compiling and installing on the Amiga rather clones the UNIX-
installation:

After you have extracted the `gawk' distribution, `cd' to `gawk-
2.14'. Look in the `config' subdirectory for a file that matches your
machine (in this case: `amiga', if the gawk maintainers put it there
:).

   If you find such a file, run the command:

     sh configure amiga

   This produces a `Makefile' and `config.h' tailored to your system.
   You may wish to edit the `Makefile' to use a different C compiler,
   such as `gcc', the GNU C compiler (recommended), if you have it.
   You may also wish to change the `CFLAGS' variable, which controls
   the command line options that are passed to the C compiler (such as
   optimization levels, or producing `resident'-able code)

   After you have configured `Makefile' and `config.h', type:

     make

and shortly thereafter (a little bit longer on a 7MHz machine >:->,
you should have an executable version of `gawk'. That's all there is
to it!


Testing ( %-/
-------
Testing gawk with the included shell-scripts and .awk-files is not
possible. As far as I found out this is a Shell problem (shell-
metas), not a gawk problem. Using gawk from the commandline requires
modifications, too. To perform at least some of the tests I'd
suggest:

        make >amitest -n bigtest

then modifying 'amitest' to work with your shell and

        execute amitest

All tests that are depending on UNIX-shell specifics will fail (eg.
redirection of stderr: stderr and stdout are identical on the Amiga).
If I really have the time (currently I'm finishing my studies) I'll
write an amiga-script for the tests ...

Despite testing is not a thankful task, `gawk' works and I found it
very useful for tasks where both shell scripts and C-programs are
inadequate.