fix build in win32

[slyshykO]

tested for MinGW-gcc 8.3 and MSVC2017

[OgreTransporter]

The changes in CMake are necessary for building with Visual Studio. The library 'm' for example does not exist.

[bukka]

Why is this actually needs to rename all google tests?

[slyshykO]

Why is this actually needs to rename all google tests?

This question need address to google because I just update gogletest lib.

[bukka]

Ah sorry those are the libs ones. That's of course fine.

I have just tried to build it but getting:

CMake Warning at lib/googletest/CMakeLists.txt:47 (project):
  VERSION keyword not followed by a value or was followed by a value that
  expanded to nothing.

which wasn't the case before this change. Doesn't this need to set explicitly GOOGLETEST_VERSION variable?

[bukka]

I should say that I build on Linux with cmake 3.16.3.

[slyshykO]

Doesn't this need to set explicitly GOOGLETEST_VERSION variable?

Think no, cause all builds are successful, and all tests passed.

[slyshykO]

@bukka, should I update googletest to lastest version (1.10)?

[bukka]

Basically the line that is giving warning is

project(gtest VERSION ${GOOGLETEST_VERSION} LANGUAGES CXX C)

so I guess that has changed and might require the GOOGLETEST_VERSION variable to be set. It won't probably prevent to run it (that's why warning) but it would be good to check what should be done about that as I would like to keep it without any warning.

[bukka]

Looks like the 1.10 doesn't have it when looking to https://github.com/google/googletest/blob/release-1.10.0/CMakeLists.txt so it might actually help to update it. Looks like even update to 1.8 should help so anything above should be fine. I would go for the latest that works though so if 1.10 works, then go for it.

[slyshykO]

Actually, line with VERSION there https://github.com/google/googletest/blob/release-1.10.0/googletest/CMakeLists.txt#L54 .
Look like I didn't copy all project.

I would go for the latest that works

So, I try to update to 1.10

[bukka]

Tested and now warnings now! Merged thanks!