Checking if your kit is complete... Looks good Writing Makefile for Tree::M *** *** This module is written in C++, which is nontrivial to integrate into *** most pre-built perls. If problems occur during compiling then edit (hack) *** *** Makefile.PL *** GiST/Makefile MT/Makefile *** *** in this order. Especially wautch out for compile and optimization flags. *** Have fun ;-> *** Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp M.pm blib\lib\Tree\M.pm cd GiST && nmake OPTIMIZE="-O6 -funroll-all-loops" CXX="g++" LD="g++" libGiST.a Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. g++ -fpic -c -O6 -funroll-all-loops -DUNIX GiSTnode.cpp 'g++' is not recognized as an internal or external command, operable program or batch file. NMAKE : fatal error U1077: 'g++' : return code '0x1' Stop. NMAKE : fatal error U1077: 'cd' : return code '0x2' Stop.