Using Visual C++ NOTE:Makefile.PL will add the instruction to use the Resource your Makefile; if you're not using Visual C++, or don't want t resources with your extension, call this script with this addi argument: perl Makefile.PL USERESOURCE=0 Note (probably harmless): No library found for 'comctl32.lib' Note (probably harmless): No library found for 'oldnames.lib' Note (probably harmless): No library found for 'kernel32.lib' Note (probably harmless): No library found for 'user32.lib' Note (probably harmless): No library found for 'gdi32.lib' Note (probably harmless): No library found for 'winspool.lib' Note (probably harmless): No library found for 'comdlg32.lib' Note (probably harmless): No library found for 'advapi32.lib' Note (probably harmless): No library found for 'shell32.lib' Note (probably harmless): No library found for 'ole32.lib' Note (probably harmless): No library found for 'oleaut32.lib' Note (probably harmless): No library found for 'netapi32.lib' Note (probably harmless): No library found for 'uuid.lib' Note (probably harmless): No library found for 'wsock32.lib' Note (probably harmless): No library found for 'mpr.lib' Note (probably harmless): No library found for 'winmm.lib' Note (probably harmless): No library found for 'version.lib' Note (probably harmless): No library found for 'odbc32.lib' Note (probably harmless): No library found for 'odbccp32.lib' Note (probably harmless): No library found for 'msvcrt.lib' Writing Makefile for Win32::GUI