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Journal of cosimo (4138)

Saturday December 23, 2006
12:53 PM

Win32::API install from CPAN shell

[ #31994 ]

The latest version of Win32::API, marked v0.46, should now correctly install even from the CPAN shell. Finally!

There is a fair amount of work behind, but now it should build, test and install cleanly on all major platform and compiler combinations.
In short, the build of API_test.dll is now gone. In the 0.46 package there's a pre-built library compiled with MSVC 6, that happens to work smoothly when loaded by any Win32::API flavour. The test suite is now simpler and takes compiler/environment differences into account.

I directly tested it on:

  • Source-compiled perl 5.8.8 + MSVC 6 + nmake
  • Source-compiled perl 5.8.8 + MSVC 2003 (Free toolkit) + nmake
  • Strawberry perl + MinGW GCC + GNU make
  • Strawberry perl + MinGW GCC + dmake
  • Cygwin perl + gcc + GNU make

Obviously there are lots of problems and improvements possible:

  • For example, it'd be great to investigate why gcc built the (now gone) test dll without all kernel32.lib imports...
  • Also, why functions with double or float return values always segfault when called.
  • And last but not least, callback interface works fully only under MSVC 6.

I don't know now when I'll find the time to go on with this work, but for now, have fun!

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  • I've tried test COSIMO/Win32-API-0.46.tar.gz in the CPAN shell on the two platforms I have available, and it kind of works... but both seem to fall over a secundary test somewhere. The same one.
    1. ActivePerl 5.8.8 build 817 (Mar 20 2006) + MinGW gcc 3.2.3. ActivePerl depends on ActivePerl::Config to dynamically override settings in Config.

      C:\Perl\bin\perl.exe "-MExtUtils::Command::MM" "-e" "test_harness(0, '..
      \blib\lib', '..\blib\arch')" t/*.t
      t/02_Callback....ok 1/8# Compiler name:cl
      # Compiler version:12
      # $

    • Hi Bart, this is interesting. Thanks for your time.

      • ActivePerl 5.8.8 + Gcc

        AFAIK, ActivePerl comes compiled by MSVC6, which is cl.exe version 12, but you are using with gcc. Correct?

        In the Callback tests, which btw fail unless you have MSVC6, I needed a way to check the compiler and I used $Config{ccname} and $Config{ccversion} instead of only using $Config{cc}, because I only must distinguish between MSVC 6 and 7+.

        Can you report your cc, ccname and ccversion variables? Or better, file a bug on

  • Works smoothly on Strawberry Perl. I've updated it on the Vanilla Perl Problem Modules page on win32.perl.org. Thank you very much for all your work on this!

  • All tests successful.
    This is perl, v5.8.7 built for MSWin32-x86-multi-thread