P:\test>perl -V
Summary of my perl5 (revision 5 version 8 subversion 7) configuration:
[...]
  Compiler:
    cc='cl', ccflags ='-nologo -Gf -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO
    optimize='-MD -Zi -DNDEBUG -O1',
[...]
Characteristics of this binary (from libperl):
  Compile-time options: MULTIPLICITY USE_ITHREADS USE_LARGE_FILES
                        USE_SITECUSTOMIZE PERL_IMPLICIT_CONTEXT
                        PERL_IMPLICIT_SYS
  Locally applied patches:
        ActivePerl Build 813 [148120]
        Iin_load_module moved for compatibility with build 806
        PerlEx hacks for CGI::Carp
        Less verbose ExtUtils::Install and Pod::Find
        instmodsh upgraded from ExtUtils-MakeMaker-6.25
        24699 ICMP_UNREACHABLE handling in Net::Ping
        21540 Fix backward-compatibility issues in if.pm
  Built under MSWin32
  Compiled at Jun  6 2005 13:36:37
  @INC:
    c:/Perl/lib
    c:/Perl/site/lib
    .

P:\test>perl -V:cc
cc='cl';

P:\test>perl -MConfig -le"print $Config{'cc'}"
cl

P:\test>cl
Microsoft (R) 32-bit C/C++ Standard Compiler Version 13.00.9466 for 80x86
Copyright (C) Microsoft Corporation 1984-2001. All rights reserved.

usage: cl [ option... ] filename... [ /link linkoption... ]