CMake: Use internal libs.

Adds an option to use the libraries included with the source code. Most of the work was done by @MonsterIestyn. This is just fixes up some things and adds a 64-bit libgme.

added 74 commits

• 0f9611df...302358c4 - 73 commits from branch STJr:master
• d0b64222 - Merge branch 'master' into cmake-use-internal-libs

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Hm, one thing I probably should have done originally was make sure the new option only works on Windows. Are you able to do this Steel?

added 1 commit

• 2ca5e291 - Make sure the new option only works on Windows.

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Done @MonsterIestyn

Wait, is WIN32 what is actually used to check for Windows then? I could have sworn it was something else, but maybe I was remembering wrong.

added 1 commit

• 1b79b952 - Properly check if cmake is running on wwindows

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added 1 commit

• 9ff0761a - Remove 64-bit libgme

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Because !329 (merged) also includes a 64-bit libgme, to prevent any conflicts. I have removed it from this branch, so to prevent any issues. Make sure that MR is merged first, then this one.

Cmake's not picking up my SRB2 repo SDL binaries. This is weird because the code suggests that it should work. Can you merge the latest master and confirm that your binaries are being picked up?

Screenshot_20181120-205249

added 44 commits

• 9ff0761a...4a88ddf8 - 43 commits from branch STJr:master
• ff9c41ca - Merge branch 'master' into cmake-use-internal-libs

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Same here @digiku But despite those errors, it still compiled just fine. I'll see what I can do about that though.

added 2 commits

• 04120154 - Move DLLs into seperate folders
• 6020abab - Fix the not found errors on DLLs

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Separated the DLLs into folders so it's less messy in the future, and while CMake now finds the DLL files, it still reports not found for the actual lib or include dir. Although it compiles, I prefer if the status was more accurate.

merged

mentioned in commit 11cb2e05