Update CMakeLists.txt

[Nemirtingas]

Fixes #16

[janbar]

crypto is not linked with these libs. Probably your parent project is.

[Nemirtingas]

I don't even know what you are talking about. crypto is the name of the library currently being built in your cmake file:
https://github.com/janbar/openssl-cmake/blob/master/crypto/CMakeLists.txt#L286

I added user32 advapi32 because thoses are default libraries added by CMake that can be disabled, thats why I had to add them manually.

[janbar]

I haven't skills with windows platform. So what could disable those default link ?

[Nemirtingas]

When you want to remove unecessary dependencies linked to you library/exec.
CMake uses theses libraries as default linked libraries:

-- CMAKE_CXX_STANDARD_LIBRARIES_INIT=-lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32 -loldnames
-- CMAKE_C_STANDARD_LIBRARIES_INIT=-lkernel32 -luser32 -lgdi32 -lwinspool -lshell32 -lole32 -loleaut32 -luuid -lcomdlg32 -ladvapi32 -loldnames

I have a toolchain that cross-compiles on Linux for Windows using the MSVC standard library, not mingw. It also allows me to link against use the newer libraries mincore.lib and WindowsApp.lib that are used for UWP apps.
mincore and WindowsApp link to the new versionned interfaces like

api-ms-win-core-file-l1-1-0.dll
api-ms-win-core-handle-l1-1-0.dll
api-ms-win-core-errorhandling-l1-1-0.dll
api-ms-win-core-heap-l1-1-0.dll
api-ms-win-core-io-l1-1-0.dll
api-ms-win-core-synch-l1-1-0.dll