in reply to Re^5: Strawberry Perl 5.12.3, CPAN, make file problems (dmake.exe), DFSEP and backslash "\"
in thread Strawberry Perl 5.12.3, CPAN, make file problems (dmake.exe), DFSEP and backslash "\"

Any more suggestions?

In my version of Strawberry, when I build IO-React-1.03, there's no problem.
When I look at the generated Makefile I see: 
DIRFILESEP = \\
DFSEP = $(DIRFILESEP)

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Next I open up lib/ExtUtils/MM_Win32.pm and I find in it: 
sub init_DIRFILESEP {
    my($self) = shift;

    # The ^ makes sure its not interpreted as an escape in nmake
    $self->{DIRFILESEP} = $self->is_make_type('nmake') ? '^\\' :
                          $self->is_make_type('dmake') ? '\\\\'
                                                       : '\\';
}

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So I change the dmake setting (from 4 backslashes to 2) so that the sub now reads: 
sub init_DIRFILESEP {
    my($self) = shift;

    # The ^ makes sure its not interpreted as an escape in nmake
    $self->{DIRFILESEP} = $self->is_make_type('nmake') ? '^\\' :
                          $self->is_make_type('dmake') ? '\\'
                                                       : '\\';
}

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Now ... have another go at building IO-React-1.03 (having first run 'dmake realclean'): 
C:\sisyphusion\IO-React-1.03>perl makefile.PL
Checking if your kit is complete...
Looks good
Writing Makefile for IO::React
Writing MYMETA.yml and MYMETA.json

C:\sisyphusion\IO-React-1.03>dmake
dmake:  Error: -- `C:\_32\strawberry514\perl\libConfig.pm' not found, 
+and can't be made

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Sure enough, when I look at the generated Makefile, I now find it's the same as yours wrt DIRFILESEP: 
DIRFILESEP = \
DFSEP = $(DIRFILESEP)

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Your generated Makefile is wrong ... plain and simple ... you need to remedy whatever it is that keeps generating this fucked Makefile.

In the above MM_Win32.pm sub, does $self->is_make_type('dmake') return true for you ?
In essence, you just need to modify that sub so that it returns \\\\ (4 backslashes) for you. Even if you just do it as: 
sub init_DIRFILESEP {
     return '\\\\';
}

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That should do it.

Cheers,
Rob
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Re^7: Strawberry Perl 5.12.3, CPAN, make file problems (dmake.exe), DFSEP and backslash "\"
by jffry (Hermit) on Feb 17, 2012 at 17:43 UTC

    Thanks for the help and insight, Rob. Both you and Eliya got me learning perl make Module internals, and I even learned a new idiom. I absolutely appreciate the effort you've shown in helping me.

    However, it was the thought of having to create a kludge for a freshly installed Strawberry Perl that really got me looking closely at what Anonymous was writing about cpan conf options, and that lead to a solution my neat-freak mentality preferred.

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      Well, for whatever its worth, strawberry-perl-5.12.3.0.zip does work out of the box 

      $ h2xs -b 5.5.0 -AX Titikaka
Writing Titikaka/lib/Titikaka.pm
Writing Titikaka/Makefile.PL
Writing Titikaka/README
Writing Titikaka/t/Titikaka.t
Writing Titikaka/Changes
Writing Titikaka/MANIFEST

$ cd Titikaka

$ ..\strawberry-perl-5.12.3.0\perl\bin\perl.exe Makefile.PL
Checking if your kit is complete...
Looks good
... Detected uninstalled Perl.  Trying to continue.
Have ..\strawb~1.0\perl\lib
Want \strawberry\perl\lib
Writing Makefile for Titikaka

$ dmake
cp lib/Titikaka.pm blib\lib\Titikaka.pm

      [download]

      However, if you set the enviromental variable make to nmake, its the same as passing Makefile.PL make=nmake 

      $ set make=nmake

$ ..\strawberry-perl-5.12.3.0\perl\bin\perl.exe  Makefile.PL
Checking if your kit is complete...
Looks good
Writing Makefile for Titikaka
Writing MYMETA.yml and MYMETA.json

$ dmake
dmake:  Error: -- `..\strawberry-perl-5.12.3.0\perl\libConfig.pm' not 
+found, and can't be made

      [download]

      So that is the only thing I think it could be, that you have make=nmake in your env for some reason , or maybe DFSEP, nothing else makes sense :)

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        I'll be damned! Not only did you nail it again, but I was so blinded by context the first time I checked this that I didn't see the obvious problem until now.

        > set | find "ake"
Make=LENOVO

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        A bug that only exists on ThinkPads! No wonder I was going nuts (relatively) alone.

        When my mind was scanning env vars before, I totally missed this because the context of the other env vars surrounding it!

        MAC=00FF6816060A
Make=LENOVO
Model=64758S4
NUMBER_OF_PROCESSORS=2
OS=Windows_NT

        [download]

        Well, let my thoroughness failure be a warning to all ThinkPad users working with Strawberry Perl.

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