# running Build.PL C:\cpanrun\build\5-10-0\bin\perl.exe Build.PL - ERROR: SDL is not installed ERRORS/WARNINGS FOUND IN PREREQUISITES. You may wish to install the versions of the modules indicated above before proceeding with this installation Checking whether your kit is complete... Looks good Checking prerequisites... Creating new 'Build' script for 'SDL-OpenGL-Cg' version '0.01' Unknown 'build_class', defaulting to 'Module::Build' Microsoft (R) Program Maintenance Utility Version 6.00.8168.0 Copyright (C) Microsoft Corp 1988-1998. All rights reserved. C:\cpanrun\build\5-10-0\bin\perl.exe Build --makefile_env_macros 1 Copying lib\SDL\OpenGL\Cg.pm -> blib\lib\SDL\OpenGL\Cg.pm lib\SDL\OpenGL\Cg.xs -> lib\SDL\OpenGL\Cg.c Generating script 'lib\SDL\OpenGL\Cg.ccs' cl -nologo -c @"lib\SDL\OpenGL\Cg.ccs" -Fo"lib\SDL\OpenGL\Cg.obj" "lib\SDL\OpenGL\Cg.c" Cg.c lib\SDL\OpenGL\Cg.xs(7) : fatal error C1083: Cannot open include file: 'Cg/cg.h': No such file or directory error building dll file from 'lib\SDL\OpenGL\Cg.c' at C:/cpanrun/build/5-10-0/lib/ExtUtils/CBuilder/Platform/Windows.pm line 143. NMAKE : fatal error U1077: 'C:\cpanrun\build\5-10-0\bin\perl.exe' : return code '0x2' Stop.