[openssl-users] newer openSSL no longer produce libeay32 on Windows?

Jakob Bohm jb-openssl at wisemo.com
Thu Jun 8 18:48:43 UTC 2017

On 08/06/2017 20:26, Ludwig, Mark wrote:
>> From: Jakob Bohm, Thursday, June 08, 2017 12:32 PM
>> On 08/06/2017 18:48, Baojun Wang wrote:
>>> Also on Windows (64-bit), openssl produces libssl-1_1-x64.dll as well
>>> as libcrypto-1_1-x64.dll, this could be painful for application who
>>> has to specify openssl dependency, for example now I have to choose
>>> ssl-1_1-x64 and crypto-1_1-x64 as extra-libs, but I imagine there's a
>>> more idiomatic way to make linking on windows (not only 64-bit)
>>> easier, do you have any idea?
>> Traditionally, Windows (like Unix) uses the same file name for
>> 32 and 64 bits, but puts them in different directories.  If
>> they need to be in the same directory for some applications,
>> the traditional solution is to insert "32" or "64" on its own,
>> while still using the same file name for different architectures
>> with the same bitness.  For example a compile for 32 bit MIPS
>> (supported by older Windows releases) or 32 bit ARM (supported
>> by newer releases) would have the same name as for 32 bit x86.
>> Similar for the 4 64 bit architectures supported at various
>> times (Alpha 64 bit, Itanium, AMD x86_64, 64 bit ARM).
>> Microsoft did some crazy experiments with a directory scheme
>> called SxS for versioned DLLs, its badly done and should be
>> avoided if possible.
> The side-by-side (SxS) stuff has its place, but to use it
> effectively requires using a "manifest" to identify the
> dependencies explicitly.  I also don't recommend it for
> general use.
> Regarding the "32" suffix, you'll see that throughout
> Windows itself, on modern 64-bit versions, because the "32"
> dates back to the 1990s when Windows was trying to grow out
> of being a 16-bit DOS program (WIN.EXE) into a 32-bit
> "operating system" (Windows NT).  Many people are
> misdirected with the term "Win32" into thinking that means
> 32-bit when it really only means "not 16-bit."  Anything
> labeled "Win32" could be either 32-bit or 64-bit.
> I haven't started working with OpenSSL 1.1.n, but in OpenSSL
> 1.0.2, all 64-bit builds produce identically-named binaries
> such as libeay32.lib and libeay32.dll in the "out32"
> directory.

I know, that was (part of) the basis for my answer.


Jakob Bohm, CIO, Partner, WiseMo A/S.  https://www.wisemo.com
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