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Misa 5e25161a10 Add /MT flag for MSVC
This flag makes it so the MSVC runtime libraries are statically linked.
This avoids needing Windows users to have these libraries installed.

Apparently /MT stands for "MultiThreaded", and there's a bit of a
history there where originally by default you could only have a
single-threaded library, and then the multi-threaded flags were added in
later.

First I tried doing target_compile_options on VVVVVV, but then got a
linker error. Then I tried doing add_compile_options because I figured
/MT had to be applied everywhere, and it seemed to work, but it still
linked to the runtime libraries. Apparently it was being overridden.
Then I tried target_compile_options again but this time did it to
everything, and that linked correctly and also removed the runtime
dependency. I would've tried using the MSVC_RUNTIME_LIBRARY property
- along with the CMP0091 policy - but those were only introduced in
CMake 3.15.

You can verify that a binary is built without dependencies by installing
LLVM and running llvm-readobj --needed-libs path/to/binary. This is the
output for a binary with runtime dependencies:

    infoteddy@fedorarune  ~/d  llvm-readobj --needed-libs VVVVVV.exe

    File: VVVVVV.exe
    Format: COFF-i386
    Arch: i386
    AddressSize: 32bit
    NeededLibraries [
      ADVAPI32.dll
      KERNEL32.dll
      MSVCP140.dll
      SDL2.dll
      SHELL32.dll
      USER32.dll
      VCRUNTIME140.dll
      api-ms-win-crt-heap-l1-1-0.dll
      api-ms-win-crt-locale-l1-1-0.dll
      api-ms-win-crt-math-l1-1-0.dll
      api-ms-win-crt-runtime-l1-1-0.dll
      api-ms-win-crt-stdio-l1-1-0.dll
      api-ms-win-crt-string-l1-1-0.dll
      api-ms-win-crt-time-l1-1-0.dll
      api-ms-win-crt-utility-l1-1-0.dll
    ]

And this is the output for a binary with those dependencies having been
statically-linked in:

     infoteddy@fedorarune  ~/d  llvm-readobj --needed-libs VVVVVV.exe

    File: VVVVVV.exe
    Format: COFF-i386
    Arch: i386
    AddressSize: 32bit
    NeededLibraries [
      ADVAPI32.dll
      KERNEL32.dll
      SDL2.dll
      SHELL32.dll
      USER32.dll
    ]
2022-06-28 17:49:03 -07:00
.github Update SDL version to 2.0.22 2022-04-25 13:09:57 -07:00
desktop_version Add /MT flag for MSVC 2022-06-28 17:49:03 -07:00
mobile_version Fix 1x1 quicksand collision optimization not working 2020-05-13 08:16:34 -04:00
third_party Update FAudio, PhysFS, and TinyXML2 submodules 2022-05-20 22:39:58 -07:00
tools Adding original mapping tools for the sake of completeness 2020-01-12 19:49:24 +01:00
.gitattributes fix actionscript misclassified as angelscript 2020-01-12 15:18:45 -05:00
.gitmodules Port to FAudio 2022-03-24 16:19:29 -07:00
License exceptions.md Update license exceptions last updated date 2021-08-24 09:10:23 -07:00
LICENSE.md Updated link to Make and Play edition 2020-01-13 19:37:50 +01:00
README.md Update README.md 2020-01-10 17:45:29 +01:00

This is the source code to VVVVVV, version 2.0+. For more context about this release, see the announcement on Terry's blog!

License

VVVVVV's source code is made available under a custom license. See LICENSE.md for more details.

In general, if you're interested in creating something that falls outside the license terms, get in touch with Terry and we'll talk about it!

Authors

Versions

There are two versions of the VVVVVV source code available - the desktop version (based on the C++ port, and currently live on Steam), and the mobile version (based on a fork of the original flash source code, and currently live on iOS and Android).