2020-01-01 21:29:24 +01:00
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How to Build
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------------
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VVVVVV's official desktop versions are built with the following environments:
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- Windows: Visual Studio 2010
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- macOS: Xcode CLT, currently targeting 10.9 SDK
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- GNU/Linux: CentOS 7
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2020-01-10 18:12:00 +01:00
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The engine depends solely on [SDL2](https://libsdl.org/) and
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[SDL2_mixer](https://www.libsdl.org/projects/SDL_mixer/). All other dependencies
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2020-01-10 18:14:37 +01:00
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are statically linked into the engine. The development libraries for Windows can
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be downloaded from their respective websites, Linux and macOS developers should
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compile and install from source.
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2020-01-01 21:29:24 +01:00
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Steamworks support is included and the DLL is loaded dynamically, you do not
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need the SDK headers and there is no special Steam or non-Steam version. The
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current implementation has been tested with Steamworks SDK v1.46.
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To generate the projects on Windows:
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```
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# Put the SDL2/SDL2_mixer VC development libraries next to the VVVVVV folder!
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mkdir flibitBuild
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cd flibitBuild
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cmake -G "Visual Studio 10 2010" .. -DSDL2_INCLUDE_DIRS="../../SDL2-2.0.10/include;../../SDL2_mixer-2.0.4/include" -DSDL2_LIBRARIES="../../SDL2-2.0.10/lib/x86/SDL2;../../SDL2-2.0.10/lib/x86/SDL2main;../../SDL2_mixer-2.0.4/lib/x86/SDL2_mixer"
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```
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To generate everywhere else:
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```
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mkdir flibitBuild
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cd flibitBuild
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cmake ..
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```
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macOS may be fussy about the SDK version. How to fix this is up to the whims of
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however Apple wants to make CMAKE_OSX_SYSROOT annoying to configure and retain
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each time Xcode updates.
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A Word About Compiler Quirks
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----------------------------
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This engine is _super_ fussy about optimization levels and runtime checks. In
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particular, the Windows version _absolutely positively must_ be compiled in
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Debug mode, with /RTC enabled. If you build in Release mode, or have /RTC
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disabled, the game behaves dramatically different in ways that were never fully
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documented (bizarre softlocks, out-of-bounds issues that don't show up in tools
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like Valgrind, stuff like that). There are lots of things about this old code
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that could be cleaned up, polished, rewritten, and so on, but this is the one
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that will probably bite you the hardest when setting up your own build,
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regardless of platform.
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We hope you'll enjoy messing with the source anyway!
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Love, flibit
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