Checking if your kit is complete... Looks good Writing Makefile for Audio::AMR::Decode Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp lib/Audio/AMR/Decode.pm blib\lib\Audio\AMR\Decode.pm C:\cpanrun\build\5-10-0\bin\perl.exe C:\cpanrun\build\5-10-0\lib\ExtUtils\xsubpp -typemap C:\cpanrun\build\5-10-0\lib\ExtUtils\typemap Decode.xs > Decode.xsc && C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e mv Decode.xsc Decode.c Please specify prototyping behavior for Decode.xs (see perlxs manual) gcc -c -nologo -GF -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DUSE_SITECUSTOMIZE -DPRIVLIB_LAST_IN_INC -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -O4 -Wall -DVAD1 -DVERSION=\"0.01\" -DXS_VERSION=\"0.01\" "-IC:\cpanrun\build\5-10-0\lib\CORE" Decode.c 'gcc' is not recognized as an internal or external command, operable program or batch file. NMAKE : fatal error U1077: 'gcc' : return code '0x1' Stop.