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From: "Rod Pemberton" <dont_use_email@xnohavenotit.cnm>
Newsgroups: comp.os.msdos.programmer,alt.os.development
Subject: Re: Smaller C compiler
Date: Tue, 03 Dec 2013 16:26:27 -0500
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On Tue, 03 Dec 2013 12:23:45 -0500, Rod Pemberton  
<dont_use_email@xnohavenotit.cnm> wrote:
> On Sun, 01 Dec 2013 11:15:37 -0500, Alexei A. Frounze  
> <alexfrunews@gmail.com> wrote:

>> Opinions?
>
> [snip]

Opinion set #2:

The readme.txt file seems to have LF's while the
license.txt file seems to have CRLF's.  DOS needs
CRLF's.

The DOS environment I'm using no longer is able
to access the internet.  So, I would've preferred
the build information in the .zip, instead of a
link to the website.  If the website changes or
goes offline in the future, the .zip doesn't have
any instructions.

I'd suggest a simple cleaned up text only version
of the following sections on the Wiki as build.txt
in the .zip:

   How do I compile Smaller C on/for x86?
   How do I compile Smaller C for MIPS?
   How do I run Smaller C?
   How do I compile Smaller C with itself?

The "options" section of the run section could
be omitted, optionally.

A note that cgx86.c and cgmips.c are included by
smlrc.c for those confused about why neither are
mentioned in the wiki build instructions would
be nice.

>> Testers/test-drivers? ;)
>
> That's coming up next...  I was going to try compiling it
> with DJGPP, perhaps OpenWatcom.

The code does NOT like the '-ansi' GCC option...
'-pedantic' and '-Wall' are fine.

NASM 0.98.39 has thousands of these errors:

   smlrcdj.asm:<line #>: error: short jump is out of range

I have a number of other versions of NASM.  The next
oldest is 2.06rc8.  It and all other more recent versions
compile the .o without warnings.  These errors can be
fixed for all versions of NASM by adding a 'near' keyword
for conditional jumps or branches.  E.g.,

   jne   LXXXX

becomes

   jne   near LXXXX

I'm not sure if that causes problems with the other
supported assemblers or not.  Support for 0.98.39
would be nice though.

There is a line which tells how to compile
with OpenWatcom.  However, the section for how to
compile Smaller C with itself has nothing for
OpenWatcom...

For 16-bit OpenWatcom:

   wcl/l=dos -wx smlrc.c
   smlrc -seg16 smlrc.c smlrc.asm
   nasm -f obj -o smlrc.obj smlrc.asm

That seems to work.  I'm not sure what the wlink
line is for OpenWatcom.  I've been trying this
which fails to link:

   wlink system dos name smlrc.exe file smlrc.obj

For 32-bit OpenWatcom, this gives an error:

   wcl386/l=dos4g -wx smlrc.c
   smlrc -seg32 smlrc.c smlrc.asm

  Error in "smlrc.c" (383:36)
  Constant too big for 32-bit type

So, I didn't make it to nasm on that one.

I tried adding -unsigned-char but it still has the
same error.  -flat32 errors also the same.

I'm assuming that's line 383 position 36.  If so,
thats '+':

   char TokenIdentName[MAX_IDENT_LEN + 1];

where MAX_IDENT_LEN is #defined as 31.

HTH,


Rod Pemberton