Perl C, XS help

Similar Threads:

1.Help - Perl, XS and global constructors

I have a third-party dynamic library that I'm trying to write an xsub
for.  It was written in C++, and it apparently has global constructors
that need to be initialized.  Building a static xsub works fine, but
the dynamic build always crashes in one function (naturally, it's a
function that needs to be called before almost all of the others in the
library).  With the static build running in wdb, I can actually see
code in the library being called from __do_global_ctors(), but not so
with a dynamic build, so I'm pretty sure it's a constructor problem.

Before I go into the gritty details, let me just ask the basic
question: can a dynamically loaded xsub be written for a library that
has global constructors that need to be initialized?

In my search for a solution, I came to believe that this was possible,
due to references to the CCsimple example in CookbookB.  It gives a
recipe for building a new perl executable that handles C++ constructors
(which I've done).  But how would perl know what constructors need to
be run, when the xsub (and hence the library) aren't loaded until the
perl interpreter starts running?  Did I misunderstand the CCsimple
example?  Note that my xsub code itself doesn't use c++, just the
library (and I only know that because it requires stdc++ to be linked
in).

I'm running HPUX 11, with a perl 5.8.6 that I built myself.  I've tried
building perl and the xsub with the HP ANSI C compiler (we don't have
the c++ compiler), g++ (with ld for linking), and g++ (for both
compiling and linking, which of course eventually calls ld anyway).
They all seem to behave about the same.

Any suggestions/guidance?  I can give more details about the xsub once
someone confirms that this is indeed possible.

Thanks.

2.Lighting effects filter doesn`t work properly in PS CS

Hi,

When i use the filter render > lighting effect... i can not use the default
settings. That`s no big deal for me, but it is a big deal for me that i can
not save or load my own lighting settings. Now i use PhotoShop 7 next with
PhotoShop CS just for that failure or bug in CS, because in PhotoShop 7, the
filter lighting effect works perfect!

Is there a patch for PhotoShop CS to get my Lighting Effects default
settings and that i can save/load my own lighting settings ?

Are more people have this problem ?

greetings,

Maurice

3.XS help

Hello All,
 
I'm trying to call C routine from Perl using XS but some how my 'make test'
is failing. Following are the steps I did :
 
file: hypotenuse.h
      double hypotenuse(double x, double y); /* Func Declaration */
file: hypotenuse.c
      /* Func Definition */
     double hypotenuse(double x, double y)
     {
           return sqrt(x*x + y*y);
     }

Steps :
1.  h2xs -n Geometry -A -O -x -F '-I ../..' hypotenuse.h   /created XS
components
2. cd Geometry               // Went in the directory
3. cp ../hypotenuse.* .     // Copied header and source files in Dir
4. Added Geometry.o and hypotenuse.o as objects in Makefile.pl
5. Perl Makefile.pl  and make is ok
6. 'make test' is failing 
 
Do someone have any idea where I'm going wrong? I did not read perl doc for
XS yet :(.
 
Error logs:
PERL_DL_NONLAZY=1 /usr/bin/perl "-MExtUtils::Command::MM" "-e"
"test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/Geometry....NOK 1
#   Failed test 'use Geometry;'
#   in t/Geometry.t at line 9.
#     Tried to use 'Geometry'.
#     Error:  Can't load
'/SES/rajni/claudio/rajni/myModule/Code/factorial/Geometry/blib/arch/auto/Ge
ometry/Geometry.so' for module Geometry:
/SES/rajni/claudio/rajni/myModule/Code/factorial/Geometry/blib/arch/auto/Geo
metry/Geometry.so: undefined symbol: hypotenuse at
/usr/lib/perl5/5.8.8/i586-linux-thread-multi/DynaLoader.pm line 230.
 
Thanks
Rajni
 
 
 

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