Checking if your kit is complete... Looks good Note (probably harmless): No library found for -lxpcom Note (probably harmless): No library found for -lplds4 Note (probably harmless): No library found for -lplc4 Note (probably harmless): No library found for -lnspr4 Note (probably harmless): No library found for -ldl Note (probably harmless): No library found for -lpthread Writing Makefile for Mozilla::nsID Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp lib/Mozilla/nsID.pm blib\lib\Mozilla\nsID.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 nsID.xs > nsID.xsc && C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e mv nsID.xsc nsID.c Please specify prototyping behavior for nsID.xs (see perlxs manual) g++ -c -I. -I/usr/include/mozilla -I/usr/include/mozilla/nspr -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 -MD -Zi -DNDEBUG -O1 -DVERSION=\"0.01\" -DXS_VERSION=\"0.01\" "-IC:\cpanrun\build\5-10-0\lib\CORE" nsID.c 'g++' is not recognized as an internal or external command, operable program or batch file. NMAKE : fatal error U1077: 'g++' : return code '0x1' Stop.