Re: h2xs on Windows

[Anonymous Monk]

I tried using swig and failed. I also tried various h2xs tutorials and i still don't get anywhere. I can't use Inline::C because the target systems don't have compilers or a full Perl suite installed (using perlapp instead).

Yes, yes you can.

What Inline::C really does is write xs distribution for you

You can compile it, install it, make par ...

Tips via Exploring Inline::C (Generating primes)

use Inline C => Config => BUILD_NOISY => 1;
use Inline C => <<'END_C',  NAME => 'scriptname', CLEAN_AFTER_BUILD =>
+ 0;
END_C

See also perlxstut, Interfacing Perl with C++, using XS, with external files, and using the STL as parameters and return values. ...

[cavac]

Thank you. I think i nearly got it. I managed to adapt Example 4 of perlxstut.

Only thing open is now a minor problem: In the main directory (not the library subdir) i also need to - in addition to link my library - link to opensc.dll. The correct flags for gcc are:


-L. -lopensc


Calling gcc manually with this flags works, after which i can finish whith another call to dmake. But i can't seem to find a way to tell MakeMaker that.

Putting them into LIBS doesn't help. What am i missing here?

[Eliya]

Putting them into LIBS doesn't help.

How exactly did you specify it?  I'm not 100% sure about Windows, but normally, putting

   LIBS => "-L. -lopensc",

in the WriteMakefile() call in Makefile.PL should work just fine (IIRC, MakeMaker would expand the "." to an absolute path).

Did you see your -L/-l combo in the linking command issued when building the extension?  Did you get a warning like "Note (probably harmless): No library found for -lopensc" (in which case the respective LIBS spec would be removed from the link arguments)?

[cavac]

LIBS => "-L. -lopensc",

Yes, did that. MakeMaker complains that it has to expand the path and that it doesn't find opensc. But the dll is actually there:


C:\src\chipcard_neu\opensc\Maplat-CCReader>perl Makefile.PL
Set up gcc environment - 3.4.5 (mingw-vista special r3)
Warning: '-L.' changed to '-LC:/src/chipcard_neu/opensc/Maplat-CCReade
+r/.'
Note (probably harmless): No library found for -lopensc
MakeMaker (v6.56)
Warning (non-fatal): Target 'dynamic' depends on targets in skipped se
+ction 'dyn
amic_lib'
Warning (non-fatal): Target 'static' depends on targets in skipped sec
+tion 'stat
ic_lib'
Writing Makefile for Maplat::CCReader::ccreadlib
Writing Makefile for Maplat::CCReader

C:\src\chipcard_neu\opensc\Maplat-CCReader>dir *.dll
 Volume in Laufwerk C: hat keine Bezeichnung.
 Volumeseriennummer: 8CF0-773E

 Verzeichnis von C:\src\chipcard_neu\opensc\Maplat-CCReader

15.07.2011  13:49         1.468.416 opensc.dll
               1 Datei(en)      1.468.416 Bytes
               0 Verzeichnis(se),  1.699.016.704 Bytes frei

Then i run dmake -v for a while and then it breaks when making the CCReader.dll on this command:


C:\Perl\site\bin\g++.exe -o blib\arch\auto\Maplat\CCReader\CCReader.dl
+l -Wl,--ba
se-file -Wl,dll.base -mdll -L"C:\Perl\lib\CORE" CCReader.o -Wl,--image
+-base,0x22
270000 ccreadlib/libccreadlib.a C:\Perl\lib\CORE\perl512.lib C:\Perl\s
+ite\lib\au
to\MinGW\lib\libkernel32.a C:\Perl\site\lib\auto\MinGW\lib\libuser32.a
+ C:\Perl\s
ite\lib\auto\MinGW\lib\libgdi32.a C:\Perl\site\lib\auto\MinGW\lib\libw
+inspool.a
C:\Perl\site\lib\auto\MinGW\lib\libcomdlg32.a C:\Perl\site\lib\auto\Mi
+nGW\lib\li
badvapi32.a C:\Perl\site\lib\auto\MinGW\lib\libshell32.a C:\Perl\site\
+lib\auto\M
inGW\lib\libole32.a C:\Perl\site\lib\auto\MinGW\lib\liboleaut32.a C:\P
+erl\site\l
ib\auto\MinGW\lib\libnetapi32.a C:\Perl\site\lib\auto\MinGW\lib\libuui
+d.a C:\Per
l\site\lib\auto\MinGW\lib\libws2_32.a C:\Perl\site\lib\auto\MinGW\lib\
+libmpr.a C
:\Perl\site\lib\auto\MinGW\lib\libwinmm.a C:\Perl\site\lib\auto\MinGW\
+lib\libver
sion.a C:\Perl\site\lib\auto\MinGW\lib\libodbc32.a C:\Perl\site\lib\au
+to\MinGW\l
ib\libodbccp32.a C:\Perl\site\lib\auto\MinGW\lib\libcomctl32.a C:\Perl
+\site\lib\
auto\MinGW\lib\libmsvcrt.a dll.exp


It fails with a lot of "undefined reference" messages, all for functions in opensc.dll:


ccreadlib/libccreadlib.a(ccreadlib.o):ccreadlib.c:(.text+0x2c): undefi
+ned refere
nce to `sc_card_ctl'
ccreadlib/libccreadlib.a(ccreadlib.o):ccreadlib.c:(.text+0x144): undef
+ined refer
ence to `sc_release_context'
ccreadlib/libccreadlib.a(ccreadlib.o):ccreadlib.c:(.text+0x157): undef
+ined refer
ence to `sc_unlock'
ccreadlib/libccreadlib.a(ccreadlib.o):ccreadlib.c:(.text+0x164): undef
+ined refer
ence to `sc_disconnect_card'
...

If i run this command manually and add -L. -lopensc, it works. Then i can continue the run of dmake to completion. The tests that use the DLL-functions run fine and everything.