readme.atari

早期freebsd实现

Gawk on Atari has been compiled and tested using gcc compiler
(versions 1.4 and 2.2.2) both with and without -mshort flag.  Other
compilers can be used but if sizeof(pointer) != sizeof(int) this
code will not compile correctly with non-ANSI compiler (prototypes
and library).

Compiled executables were tested and with minor modifications, due
to differences in environment and/or shell, succesfully completed
at least the following tests:
awf, pearls, resub, chem, swaplns, delete, messages, argarray,
longwrds, getline, inftest, spiece2top, fstabplus, compare, arrayref,
rs, fsrs, rand, fsbs, negexp, ugh2, asgext, anchgsub, splitargv,
fieldwidths, ignorecase, posix, manyfiles, igncfs, lisp, regtest,
awkpath, reparse, nfset.

Nearly all of these test do not require any adjustments to run, but a
modified test suite with a driving Makefile (for gulam) is available
on a request from Michal Jaegermann, [e-mail],
via e-mail.

TOS and MiNT
-----------
Setup for Atari assumes that gawk will be used under TOS.  In
particular atari/system.c source is for a system function which nicely
cooperates with gulam shell and pipes are simulated with temporary
files.  If you plan to run gawk under MiNT then you likely want a
different system function and real pipes.  For that purpose do not
define SYSTEM_MISSING in a configuration file and do not define
PIPES_SIMULATED in io.c file.  Please note that in the later case gawk
calls, in gawk_popen(), a function execl() with a hard-coded name of
"/bin/sh".  You want likely to change that to get a name and some
arguments from an environment variable.  This was not done here in
order to avoid changes which may prove troublesome in a general
distribution.  Subdirectory ./atari contains also a file textrd.c with
a bug fix for old versions of gcc libraries.  This bug is currently
fixed and the file is not used, but it is left as a convenience for
those who may not updated yet their libraries.