Re: [MacPerl-Porters] Identifying Ported Modules

[Matthew Langford <langfml [at] eng [dot] auburn [dot] edu>]

On Wed, 12 Jan 2000, Chris Nandor wrote:

> >If it wouldn't get installed under Unix (the binary target couldn't be
> >built), why are we installing it under MacOS?
> 
> Oh, I see what you mean.  No, if there is some module that provides an
> option of XS or non-XS then it very well may not fail.  It depends on the
> makefile and such.

Right.  I am specifically talking about make() and make_install() in
MM_MacOS.pm.  They are, or should be, mirroring the "make" and "make
install" targets in a Real Makefile.

They are smart enough to copy binaries if they exist.  Can't they tell
when a binary is part of "make"?

In my admittedly incomplete inspection of the process, it seemed to me
that if $(BASEEXT).xs exists, then a $(BASEEXT).c will be created, which
will get rolled into $(SOURCES), which will end up in one or more of the
Obj objects.  These will be part of a "make" target.

Because of that, I figured ExtUtils::MMac_OS::make() could balk if there
existed an XS file, but not a "blib" folder (or is it Obj?--I'm still
fuzzy on a lot of things).

Where did I fall off the wagon?  :)



> >If a binary target is required, but not present, then MacPerl should stop
> >the installation just as Unix does.
> 
> We don't know if a binary target is required without actually creating a
> makefile and either parsing it or calling make.  The mere presence of .xs
> files does not mean much.  And I am not about to tackle the parsing of the
> Makefile that is created when Makefile.PL is run, since that would be Hard
> And Subject To Much Breakage, and users simply looking at the output from
> get and then deciding whether or not it can be installed safely is, well,
> Not As Hard.

Maybe I should clarify:  I'm not talking about CPAN.pm, except as it calls
ExtUtils::MM_MacOS.pm::make() and make_install().  These _should_ reflect
Makefile/Makefile.PL, right?  To some simple extent.  Perhaps I'm asking
for slightly more accuracy than is currently implemented.


--
MattLangford 


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