Note (probably harmless): No library found for '-MakeMaker (v5.45) Warning (non-fatal): Target 'dynamic' depends on targets in skipped section 'dynamic_lib' Warning (non-fatal): Target 'static' depends on targets in skipped section 'static_lib' Writing Makefile for Net::Patricia::libpatricia Writing Makefile for Net::Patricia cp Patricia.pm blib\lib\Net\Patricia.pm cd libpatricia && nmake -nologo cl -c -nologo -O1 -MD -Zi -DNDEBUG -DWIN32 -D_CONSOLE NMAKE : fatal error U1077: 'cl' : return code '0x2' Stop. NMAKE : fatal error U1077: 'cd' : return code '0x2' Stop. -DVERSION=\"0.10\" -DXS_VERSION=\"0.10\" -ID:\cpanrun\build\5-6-1\lib\CORE patricia.c patricia.c patricia.c(29) : fatal error C1083: Cannot open include file: 'netinet/in.h': No such file or directory