Checking if your kit is complete...
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Writing Makefile for Whatif

Microsoft (R) Program Maintenance Utility   Version 6.00.8168.0
Copyright (C) Microsoft Corp 1988-1998. All rights reserved.

cp Whatif.pm blib\lib\Whatif.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  Whatif.xs > Whatif.xsc && C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e mv Whatif.xsc Whatif.c
	cl -c    -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=\"1.2\"  -DXS_VERSION=\"1.2\"  "-IC:\cpanrun\build\5-10-0\lib\CORE"  -DVARIANT_44BSD -DPERL_INTERP='""' -I. Whatif.c
Whatif.c
Running Mkbootstrap for Whatif ()
	C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e chmod 644 Whatif.bs
	C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Mksymlists  -e "Mksymlists('NAME'=>\"Whatif\", 'DLBASE' => 'Whatif', 'DL_FUNCS' => {  }, 'FUNCLIST' => [], 'IMPORTS' => {  }, 'DL_VARS' => []);"
	link -out:blib\arch\auto\Whatif\Whatif.dll -dll -nologo -nodefaultlib -debug -opt:ref,icf  -libpath:"C:\cpanrun\build\5-10-0\lib\CORE"  -machine:x86 Whatif.obj   C:\cpanrun\build\5-10-0\lib\CORE\perl510.lib oldnames.lib kernel32.lib user32.lib gdi32.lib winspool.lib  comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib  netapi32.lib uuid.lib ws2_32.lib mpr.lib winmm.lib  version.lib odbc32.lib odbccp32.lib msvcrt.lib -def:Whatif.def
   Creating library blib\arch\auto\Whatif\Whatif.lib and object blib\arch\auto\Whatif\Whatif.exp
	C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e chmod 755 blib\arch\auto\Whatif\Whatif.dll
	C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e cp Whatif.bs blib\arch\auto\Whatif\Whatif.bs
	C:\cpanrun\build\5-10-0\bin\perl.exe -MExtUtils::Command -e chmod 644 blib\arch\auto\Whatif\Whatif.bs

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 "-Iblib\lib" "-Iblib\arch" test.pl
1..20
ok 1 - use Whatif;
ok 2 - require Whatif;
ok 3 - don't roll back
Your vendor has not defined POSIX macro _SC_OPEN_MAX, used at blib\lib/Whatif.pm line 44
# Looks like you planned 20 tests but only ran 2.
# Looks like your test died just after 2.

Microsoft (R) Program Maintenance Utility   Version 6.00.8168.0
Copyright (C) Microsoft Corp 1988-1998. All rights reserved.

Files found in blib\arch: installing files in blib\lib into architecture dependent library tree
Installing C:\cpanrun\build\5-10-0\site\lib\auto\Whatif\Whatif.bs
Installing C:\cpanrun\build\5-10-0\site\lib\auto\Whatif\Whatif.dll
Installing C:\cpanrun\build\5-10-0\site\lib\auto\Whatif\Whatif.exp
Installing C:\cpanrun\build\5-10-0\site\lib\auto\Whatif\Whatif.lib
Installing C:\cpanrun\build\5-10-0\site\lib\auto\Whatif\Whatif.pdb
Installing C:\cpanrun\build\5-10-0\html\site\lib\Whatif.html
Installing C:\cpanrun\build\5-10-0\site\lib\Whatif.pm
Appending installation info to C:\cpanrun\build\5-10-0\lib/perllocal.pod