C:\vaman\Audio-Scan-0.98\Audio-Scan-0.98>nmake

Microsoft (R) Program Maintenance Utility Version 12.00.21005.1
Copyright (C) Microsoft Corporation.  All rights reserved.

Skip blib\lib\Audio\Scan.pm (unchanged)
Running Mkbootstrap for Audio::Scan ()
        C:\Perl\bin\perl.exe -MExtUtils::Command -e chmod -- 644 Scan.bs
        C:\Perl\bin\perl.exe C:\Perl\lib\ExtUtils\xsubpp  -typemap C:\Perl\lib\ExtUtils\typemap  Scan.xs > Scan.xsc && C:\Perl\bin\perl.exe -MExtUtils::Command -e mv -- Scan.xsc Scan.c
Please specify prototyping behavior for Scan.xs (see perlxs manual)
        gcc -c  -Iinclude -Isrc  -s -O2 -DWIN32 -DPERL_TEXTMODE_SCRIPTS -DUSE_SITECUSTOMIZE -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -fno-strict-aliasing -mms-bitfields -s -O2    -DVERSION=\"0.98\"  -DXS_VERSION=\"0.98\"  "-IC:\Perl\lib\CORE"   Scan.c
In file included from src/common.c:17:0,
                 from Scan.xs:21:
include/common.h:49:16: error: redefinition of 'struct _GUID'
c:\perl\site\lib\auto\mingw\bin\../lib/gcc/i686-w64-mingw32/4.6.3/../../../../i686-w64-mingw32/include/guiddef.h:8:16: note: originally defined here
include/common.h:54:11: error: conflicting types for 'GUID'
c:\perl\site\lib\auto\mingw\bin\../lib/gcc/i686-w64-mingw32/4.6.3/../../../../i686-w64-mingw32/include/guiddef.h:13:3: note: previous declaration of 'GUID' was here
In file included from src/common.c:18:0,
                 from Scan.xs:21:
src/buffer.c:798:1: error: conflicting types for 'buffer_get_guid'
include/buffer.h:106:6: note: previous declaration of 'buffer_get_guid' was here
In file included from src/asf.c:42:0,
                 from Scan.xs:26:
include/asf.h:30:0: warning: "IsEqualGUID" redefined [enabled by default]
c:\perl\site\lib\auto\mingw\bin\../lib/gcc/i686-w64-mingw32/4.6.3/../../../../i686-w64-mingw32/include/guiddef.h:145:0: note: this is the location of the previous definition
NMAKE : fatal error U1077: 'C:\Perl\site\bin\gcc.EXE' : return code '0x1'
stop.