Windows support

[msrd0]

Currently, this project relies on the rlottie C library to be precompiled and pkg-config to be able to find it. This seems to be incompatible with windows.

I see two options going forward:

• Somehow detect precompiled versions of rlottie on Windows. No idea if that's possible, and which tools are necessary to do this.
• Add a vendor feature similar to other -sys crates in the ecosystem that downloads and compiles a version of rlottie and statically links it.

These options are not incompatible with each other, so both could be implemented if desired. As I don't have windows, I cannot implement this myself, but PRs are welcome. Any implementing PR needs to have a CI setup that tests everything on windows as I won't be able to test locally.

[dzoidbrg]

I am a proud Linux user: ), but I have a windows machine so I will try hacking this together

[LuckyTurtleDev]

The vendor feature has the advantage that the user does not have to care, how to install rlottie.
As example rlottie is also not package for mac os brew.

[funatsufumiya]

I could run rlottie-rs on my windows.

Here is the process what I did:

• install mingw, ninja, llvm, and pkgconfiglite using chocolatey.

$ choco install mingw -y
$ choco install ninja -y
$ choco install llvm -y
$ choco install pkgconfiglite -y

• Install rlottie. ( ninja install may need administrator privillege )

$ git clone --depth=1 https://github.com/Samsung/rlottie
$ cd rlottie
$ meson build
$ ninja -C build
$ ninja install -C build

• set PKG_CONFIG_PATH, C_INCLUDE_PATH, LIBRARY_PATH, PATH to each folder ( ninja install shows )

  • in my case, PKG_CONFIG_PATH to C:\lib\pkgconfig, C_INCLUDE_PATH to C:\include, LIBRARY_PATH to C:\lib, PATH to C:\bin

• copy rlottie\example\win32Player\rlottie.lib to LIBRARY_PATH folder, and copy rlottie\example\win32Player\rlottie.dll to PATH folder (in my case, C:\lib and C:\bin)

• then finally try cargo install rlottie-rs (like $ cargo install lottieconv --features="clap gif")