Note (probably harmless): No library found for '-Writing Makefile for Bio::SCF ): No library found for '-lz' cp SCF/Arrays.pm blib\lib\Bio\SCF\Arrays.pm cp SCF.pm blib\lib\Bio\SCF.pm D:\cpanrun\build\5-6-1\bin\perl.exe -Id:\cpanrun\buildPlease specify prototyping behavior for SCF.xs (see perlxs manual) NMAKE : fatal error U1077: 'cl' : return code '0x2' Stop. \typemap SCF.xs > SCF.xsc && D:\cpanrun\build\5-6-1\bin\perl.exe -Id:\cpanrun\build\5-6-1\lib -Id:\cpanrun\build\5-6-1\lib -MExtUtils::Command -e mv SCF.xsc SCF.c cl -c -nologo -O1 -MD -Zi -DNDEBUG -DWIN32 -D_CONSOLE -DNO_STRICT -DHAVE_DES_FCRYPT -DPERL_IMPLICIT_CONTEXT -DPERL_IMPLICIT_SYS -DPERL_MSVCRT_READFIX -O1 -MD -Zi -DNDEBUG -DVERSION=\"1.01\" -DXS_VERSION=\"1.01\" -ID:\cpanrun\build\5-6-1\lib\CORE -DLITTLE_ENDIAN SCF.c SCF.c SCF.xs(11) : fatal error C1083: Cannot open include file: 'unistd.h': No such file or directory