Add rav1e to AppVeyor builds

Fixes: #573

appveyor.yml

@@ -8,26 +8,35 @@ skip_commits:
     - '*.md'
 
 install:
+ # install Rust
+ - appveyor DownloadFile https://win.rustup.rs/ -FileName rustup-init.exe
+ - rustup-init -yv --default-toolchain stable --default-host x86_64-pc-windows-msvc
+ - set PATH=%PATH%;%USERPROFILE%\.cargo\bin
+ - rustc -vV
+ - cargo -vV
+ # Get submodules
  - git submodule update --init --recursive
+ # Prepare VS env
  - call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\VC\Auxiliary\Build\vcvars64.bat"
  # Install Nasm
  - appveyor DownloadFile "https://github.com/joedrago/nasm_mirror/raw/master/nasm-2.15.05-win64.zip" -FileName "nasm.zip"
  - 7z x "nasm.zip" > nul
  - move nasm-* NASM
  - set PATH=%PATH%;%CD%\NASM;
  - nasm -v
- # Build libaom and dav1d
+ # Build all external libraries statically
  - cd ext
  - aom.cmd
  - dav1d.cmd
+ - rav1e.cmd
  - libjpeg.cmd
  - zlibpng.cmd
  - cd ..
  # Configure with CMake
  - mkdir build
  - cd build
  - cmake --version
- - cmake .. -DAVIF_CODEC_AOM=ON -DAVIF_LOCAL_AOM=ON -DAVIF_CODEC_DAV1D=ON -DAVIF_LOCAL_DAV1D=ON -DBUILD_SHARED_LIBS=OFF -DAVIF_LOCAL_JPEG=1 -DAVIF_LOCAL_ZLIBPNG=1 -DAVIF_BUILD_APPS=ON
+ - cmake .. -DAVIF_CODEC_AOM=ON -DAVIF_LOCAL_AOM=ON -DAVIF_CODEC_DAV1D=ON -DAVIF_LOCAL_RAV1E=ON -DAVIF_CODEC_RAV1E=ON -DAVIF_LOCAL_DAV1D=ON -DBUILD_SHARED_LIBS=OFF -DAVIF_LOCAL_JPEG=1 -DAVIF_LOCAL_ZLIBPNG=1 -DAVIF_BUILD_APPS=ON
 
 build:
   project: build/libavif.sln