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test.c warning LNK4070: /OUT:Test.dll directive in .EXP differs from o
+utput filename 'Debug/test.c.dll'; ignoring directive
test.c error LNK2019: unresolved external symbol _Perl_sv_2mortal refe
+renced in function "void __cdecl ExtensionAddNumbers(struct interpret
+er *,struct cv *)" (?ExtensionAddNumbers@@YAXPAUinterpreter@@PAUcv@@@
+Z)
...
test.c error LNK2019: unresolved external symbol _Perl_Isv_yes_ptr ref
+erenced in function "void __cdecl boot_Win32__Test(struct interpreter
+ *,struct cv *)" (?boot_Win32__Test@@YAXPAUinterpreter@@PAUcv@@@Z)
test.c error LNK2019: unresolved external symbol _Perl_newXS reference
+d in function "void __cdecl boot_Win32__Test(struct interpreter *,str
+uct cv *)" (?boot_Win32__Test@@YAXPAUinterpreter@@PAUcv@@@Z)
test.c fatal error LNK1120: 15 unresolved externals