i370 port - constructing compile script

[Paul Edwards]

>>>>> But from the Unix system, I need to be able to generate the
>>>>> above very simple compile script, which is a precursor to creating
>>>>> very simple JCL steps (trust me, you don't want to see what
>>>>> ST2CMP looks like).  Note that the JCL has the filenames
>>>>> truncated to 8 characters, listed twice, uppercased, and '-'
>>>>> and '_' converted to '@'.
> 
>> Why are you not making use of z/OS Unis System Services?  GNU Make and
>> other GNU tools are available and already built for z/OS.

USS is not available for free, or even for a price on MVS 3.8j,
and it is not native MVS, it is an expensive overhead.

It's a bit like asking "why don't you use a JCL emulator instead 
of make on Unix?".  :-)

You know, even as a batch job with JCL, people then said to me
that reading the C source from a file instead of "standard input"
(ie stdin, ie //SYSIN DD) is really weird, and so I had to make a
pretty small mod to GCC to allow "-" as the filename, so that
the JCL at least looks like a normal MVS compiler.

> Perhaps because he is a hacker in the good ol' sense of the word ?
> 
> Mjam, MVS, JCL, the possibility of COBOL, perhaps even PL/1 ...

Both Cobol and PL/1 front-ends are already supported to some
extent ...

http://www.opencobol.org/

http://pl1gcc.sourceforge.net/

although we're not really at the stage of even attempting to get
that onto native MVS.

Actually, PL/1 basically requires GCC 4.x, which is my main
interest in upgrading 3.4.6 to 4.x.  :-)

Someone else said he would like to see PL/S, and maybe if
PL/1 was available, the super-secret PL/S language would 
start to be made available.

But it all rests on getting the HLASM-generator working on a more
modern GCC.  :-)

And C90 is the lingua franca.

> [ Over a quarter of century ago I worked at the computer center
>   of the Dutch Postal Service. One of my colleagues managed the
>   IBM system group.  He had an assistant to write the JCL jobs he needed
>   for him. ]

Maybe for old times sake you'd like to load up:

http://mvs380.sourceforge.net

It comes with GCC so you can now do what you always wanted
to do back then.  :-)  And of course, all perfectly usable on z/OS
too.  Natively.  :-)

850,000 lines of assembler.  Like wow, man.  I wonder what
GCC 4.4 will clock in as?  3.2.3 was 700,000, so we're probably
up to a million lines of pure 370 assembler.  :-)

BFN.  Paul.