Hi Rob,
Your premise seems to be that my code (in Lib/GIS/Proj/Makefile.PL and
Lib/Transform/Proj4/Makefile.PL) doesn't pass the relevant %PDL::Config
contents through to Alien::Proj4. However, it in fact does, with the
Alien::Proj4->import method, as documented in the Alien::Proj4 POD, which
I'm assuming you've read.
You also seem to have the premise that @DEFAULT_INC and @DEFAULT_LIB need to
have your perldl.conf vars there, but they don't, because they're only the
default. The values Alien::Proj4 works off are @inc_locations and
@lib_locations.
So that we're definitely working off the same songsheet, could you help me
by making a clean copy of the relevant git code, copying only your modified
perldl.conf in, and trying that? Could you then put "warn"s in the
Alien::Proj4->import method to make sure whether in fact I made a mistake
and somehow it's not being called, and then also put "warn"s in
Alien::Proj4->installed and Alien::Proj4->incflags and Alien::Proj4->libdir
to see what's going on?
Cheers,
Ed
-----Original Message-----
From: sisyph...@optusnet.com.au
Sent: Tuesday, March 31, 2015 3:37 AM
To: Sisyphus
Cc: pdl-devel
Subject: Re: [Pdl-devel] Proj presently broken
Oops ... failed to 'cc' the list.
(Looks to me that I might not be on the pdl-devel list at this stage, so
please 'cc' me. In the meantime, I'll make yet another attempt to subscribe
to pdl-devel.)
-----Original Message-----
From: Ed
Sent: Tuesday, March 31, 2015 3:08 AM
To: sisyph...@optusnet.com.au
Cc: pdl-devel
Subject: Re: [Pdl-devel] Proj presently broken
> Rob, could you help me figure why it's not working 100%? After setting
> WITH_PROJ to undef, in inc/Alien/Proj4.pm, in sub installed, could you add
> "warn"s between each of the statements to see which one it's deciding it
> doesn't have?
Aaah ... I was guessing that Alien::Proj4->installed *should* be false for
me. (My guesswork is still clearly as crappy as it's always been.)
The problem is that Proj4.pm's @DEFAULT_LIB and @DEFAULT_INC need to include
@{$PDL::Config{PROJ_LIBS}} and (resp.) @{$PDL::Config{PROJ_INC}} - but they
don't.
I don't get bitten by the absence of @{$PDL::Config{PROJ_LIBS}} from
@DEFAULT_LIB because my PROJ_LIBS directory is, as luck would have it, also
in $Config{libpth}.
But @{$PDL::Config{PROJ_INC}} is not found anywhere in the existing
@DEFAULT_INC, and that's what causes check_lib(), and hence installed(), to
return false.
The eval() in check_lib() sets $@ to:
Can't link/include C library 'proj_api.h', 'proj', aborting.
Unfortunately, specifying "use PDL::Config;" in Alien/Proj4.pm is *not* the
appropriate thing to do - as that results in a Config.pm that's a copy of
the previously installed version of that module.
One solution I can see is to have Alien/Proj4.pm parse perld.conf for the
relevant PROJ_LIBS and PROJ_INC settings, for inclusion in @DEFAULT_LIB and
@DEFAULT_INC.
Is there a better way ?
Cheers,
Rob
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