Checking if your kit is complete... Looks good Note (probably harmless): No library found for -lastrocat Note (probably harmless): No library found for -lwcslib Note (probably harmless): No library found for -lcompress Writing Makefile for Astro::SkyCat Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. cp SkyCat.pm blib\lib\Astro\SkyCat.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 -typemap typemap SkyCat.xs > SkyCat.xsc && C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e mv SkyCat.xsc SkyCat.c Please specify prototyping behavior for SkyCat.xs (see perlxs manual) g++ -c -I/home/timj/data/tmp/catlib-3.7.1/cat/astrocat/include -I/home/timj/data/tmp/catlib-3.7.1/cat/ccat/include -I/home/timj/data/tmp/catlib-3.7.1/astrotcl/wcslib/include -I/home/timj/data/tmp/catlib-3.7.1/tclutil/util/include -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" SkyCat.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.