> I've noted that when build OpenSSL using MSVC,
> some empty directories are created:
> I configured with:
> perl.exe -I. -I./util/perl Configure VC-WIN32-ONECORE no-makedepend
> enable-zlib enable-trace enable-md2 no-ec_nistp_64_gcc_128
> enable-asan enable-aria enable-rc5 enable-heartbeats --prefix=/foo/bar
> I see that the generated Makefile has lots of
> '-I "crypto\include"'. AFAICS needlessly. But I
> see no 'mkdir crypto\include' anywhere.
> And I don't see 'mkdir-p.pl' is used to create these.
> So how are these empty directories created/used?