C:\Perl\test\Dev\SSH\Math-GMP\Math-GMP>nmake

Microsoft (R) Program Maintenance Utility   Version 1.50
Copyright (c) Microsoft Corp 1988-94. All rights reserved.

cp lib/Math/GMP.pm blib\lib\Math\GMP.pm
AutoSplitting blib\lib\Math\GMP.pm (blib\lib\auto\Math\GMP)
        C:\Perl\bin\perl.exe C:\Perl\lib\ExtUtils/xsubpp  -typemap C:\Perl\lib\ExtUtils\typemap -typemap typemap  GMP.xs > GM
P.xsc && C:\Perl\bin\perl.exe -MExtUtils::Command -e mv GMP.xsc GMP.c
        cl -c    -nologo -Gf -W3 -MD -Zi -DNDEBUG -O1 -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DBUILT_BY_ACTIVESTATE
 -DNO_HASH_SEED -DUSE_SITECUSTOMIZE -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DUSE_PERLIO -DPERL_MSVCRT_READFIX -MD -Zi -D
NDEBUG -O1    -DVERSION=\"2.04\"  -DXS_VERSION=\"2.04\"  "-IC:\Perl\lib\CORE"   GMP.c
'cl' is not recognized as an internal or external command,
operable program or batch file.
NMAKE : fatal error U1077: 'C:\WINNT\system32\cmd.exe' : return code '0x1'
Stop.