Re: own perl module based on c library

~~have you copied factorial.c and factorial.h into the directory created by h2xs?~~

It seems that h2xs is not able to generate the XS declarations for the functions in factorial.c

That's what it produces in my machine:

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#include "ppport.h"


MODULE = Book::Factorial        PACKAGE = Book::Factorial
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Re^2: own perl module based on c library by almut (Canon) on Apr 27, 2010 at 13:49 UTC
Looks like the problem is the `-F` option to `h2xs`. Not only is it useless here (which is why I dropped it), it's in fact the source of the problem, because it declares `"factorial.h"` to be a C preprocessor flag, so there remains no `.h` file to scan... $ h2xs -n Book::Factorial -A -O -x -F factorial.h Defaulting to backwards compatibility with perl 5.10.1 If you intend this module to be compatible with earlier perl versions, + please specify a minimum perl version with the -b option. Writing Book-Factorial/ppport.h Scanning typemaps... Scanning /usr/local/perl/5.10.1/lib/5.10.1/ExtUtils/typemap Writing Book-Factorial/lib/Book/Factorial.pm Writing Book-Factorial/Factorial.xs Writing Book-Factorial/Makefile.PL Writing Book-Factorial/README Writing Book-Factorial/t/Book-Factorial.t Writing Book-Factorial/Changes Writing Book-Factorial/MANIFEST ---- $ h2xs -n Book::Factorial -A -O -x factorial.h Defaulting to backwards compatibility with perl 5.10.1 If you intend this module to be compatible with earlier perl versions, + please specify a minimum perl version with the -b option. Writing Book-Factorial/ppport.h Scanning typemaps... Scanning /usr/local/perl/5.10.1/lib/5.10.1/ExtUtils/typemap Scanning factorial.h for functions... # <--- !! Scanning factorial.h for typedefs... Writing Book-Factorial/lib/Book/Factorial.pm Writing Book-Factorial/Factorial.xs Writing Book-Factorial/Makefile.PL Writing Book-Factorial/README Writing Book-Factorial/t/Book-Factorial.t Writing Book-Factorial/Changes Writing Book-Factorial/MANIFEST [download] The latter variant produces the follwing correct `Factorial.xs` file: `#include "EXTERN.h" #include "perl.h" #include "XSUB.h" #include "ppport.h" #include <factorial.h> MODULE = Book::Factorial PACKAGE = Book::Factorial double factorial_iterative_c(x) int x double factorial_recursive_c(x) int x` [download]	[reply] [d/l] [select]
Re^3: own perl module based on c library by gants (Novice) on Apr 28, 2010 at 13:32 UTC
`#include <stdio.h> int tst(int len,char str[1024]){ printf("called c from perl len:'%i' str:'%s' \n",len, str); return 1; } int main( ){ tst(54,"char"); return 1; }` [download] then what's wrong here, in C it works well, module for perl compiled well, but this `use TST; TST::test(4444,"ss");` [download] prints `called c from perl len:'4444' str:'(null)'`	[reply] [d/l] [select]