Re: [Module::Build] MBC possible missing dependency

[Randy W. S. <Ra...@Th...>]

On 11/25/2003 2:45 PM, Jim Cromie wrote:
> MBers,
> 
> it appears that  Module::Build::Compat  'make test' skips 'make'
> in some circumstances.
> 
> 
> 1. make clean, make  is OK - lib -> blib happens
> 
> [jimc@harpo Array-Compare-1.09]$ make clean
> /usr/local/bin/perl Build clean
> Deleting blib
> [jimc@harpo Array-Compare-1.09]$ make
> /usr/local/bin/perl Build
> lib/Array/Compare.pm -> blib/lib/Array/Compare.pm
> Manifying blib/lib/Array/Compare.pm -> blib/libdoc/Array::Compare.3
> 
> 2. make clean, make test - OK - lib -> blib happens
> 
> [jimc@harpo Array-Compare-1.09]$ make clean
> /usr/local/bin/perl Build clean
> Deleting blib
> [jimc@harpo Array-Compare-1.09]$ make test
> /usr/local/bin/perl Build test
> lib/Array/Compare.pm -> blib/lib/Array/Compare.pm
> t/pod.....make: *** [test] Interrupt
> 
> 3. perl Makefile.PL, make test NOT OK  lib -> blib SKIPPED
> 
> [jimc@harpo Array-Compare-1.09]$ perl Makefile.PL
> /usr/local/bin/perl Build.PL
> Checking whether your kit is complete...
> Looks good
> Deleting Build
> Removed previous script 'Build'
> Creating new 'Build' script for 'Array-Compare' version '1.09'
> [jimc@harpo Array-Compare-1.09]$ make test
> /usr/local/bin/perl Build test
> t/pod.....make: *** [test] Interrupt
 >
> 4. make clean, perl Makefile.PL, make test OK -
> 
> [jimc@harpo Array-Compare-1.09]$ make clean
> /usr/local/bin/perl Build clean
> Deleting blib
> [jimc@harpo Array-Compare-1.09]$ perl Makefile.PL
> /usr/local/bin/perl Build.PL
> Checking whether your kit is complete...
> Looks good
> Deleting Build
> Removed previous script 'Build'
> Creating new 'Build' script for 'Array-Compare' version '1.09'
> [jimc@harpo Array-Compare-1.09]$ make test
> /usr/local/bin/perl Build test
> lib/Array/Compare.pm -> blib/lib/Array/Compare.pm
> t/pod.....
> 
> 
> from 3,4 I infer that  perl Makefile.PL doesnt automatically invalidate 
> blib
> by Makefile being newer than blib.
> 
> while that might be a feature (of really knowing nothing changed), it 
> could also
> be a mising dependency.

AFAICT, this is the correct behaviour. There is no dependence on the 
produced 'Makefile' since it will never, ever, under any condition, 
change. It's a simple pass-thru makefile with no variables or anything 
else that could change from one run to another. But do note that if you 
touch anything in lib, it will correctly be copied to blib.

> 5. I change Makefile inside by giving it a new prefix.
> no lib->blib rebuild.
> This still might be ok, IFF MB is really smart, and knows that a diffferent
> install location doesnt need a re-make.
t>
> [jimc@harpo Array-Compare-1.09]$ perl Makefile.PL PREFIX=~
> /usr/local/bin/perl Build.PL config=prefix=/home/jimc
> Checking whether your kit is complete...
> Looks good
> Deleting Build
> Removed previous script 'Build'
> Creating new 'Build' script for 'Array-Compare' version '1.09'
> [jimc@harpo Array-Compare-1.09]$ make
> /usr/local/bin/perl Build
> [jimc@harpo Array-Compare-1.09]$
> 
> 6. same as above, but with perl Makefile.PL distdir=~
> 
> 
> This could be an " Ouch!,  Well - dont do that " problem,
> but I thought it worth flagging.

The arguments you pass in get stored in '_build/build_params' and not in 
the 'Makefile'. Again, 'Makefile' never changes, so it does not need to 
be listed in the dependencies.

I don't see how any problems could arise here. Have you run in to any 
problems related to this behaviour?

> tia,
> jimc

Regards,
Randy.