Mac + RustでSDL2クレートのビルド時にエラーが発生する問題

使用したSDL2クレート

rustcのバージョン

% rustc --version
rustc 1.89.0 (29483883e 2025-08-04)

Cargo.toml

dependenciesの書き方は、ここを参考にしました。
https://www.reddit.com/r/rust/comments/1d87vo3/cant_use_sdl2_with_rust_macos/?tl=ja

[package]
name = "train-sdl2"
version = "0.1.0"
edition = "2024"

[features]
default = []

[target.'cfg(target_os="macos")'.dependencies.sdl2]
features = ["bundled"]
version = "0.38.0"

[dependencies]

問題時のエラーログ

% cargo build
   Compiling sdl2-sys v0.38.0
error: failed to run custom build command for `sdl2-sys v0.38.0`

Caused by:
  process didn't exit successfully: `/Users/user/train-sdl2/target/debug/build/sdl2-sys-6009dbd30eb3d728/build-script-build` (exit status: 101)
  --- stdout
  CMAKE_TOOLCHAIN_FILE_aarch64-apple-darwin = None
  CMAKE_TOOLCHAIN_FILE_aarch64_apple_darwin = None
  HOST_CMAKE_TOOLCHAIN_FILE = None
  CMAKE_TOOLCHAIN_FILE = None
  CMAKE_GENERATOR_aarch64-apple-darwin = None
  CMAKE_GENERATOR_aarch64_apple_darwin = None
  HOST_CMAKE_GENERATOR = None
  CMAKE_GENERATOR = None
  CMAKE_PREFIX_PATH_aarch64-apple-darwin = None
  CMAKE_PREFIX_PATH_aarch64_apple_darwin = None
  HOST_CMAKE_PREFIX_PATH = None
  CMAKE_PREFIX_PATH = None
  CMAKE_aarch64-apple-darwin = None
  CMAKE_aarch64_apple_darwin = None
  HOST_CMAKE = None
  CMAKE = None
  running: cd "/Users/user/train-sdl2/target/debug/build/sdl2-sys-c97cc07ec1adce12/out/build" && CMAKE_PREFIX_PATH="" LC_ALL="C" "cmake" "/Users/user/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/sdl2-sys-0.38.0/SDL" "-DCMAKE_OSX_ARCHITECTURES=arm64" "-DCMAKE_CONFIGURATION_TYPES=Release" "-DSDL_SHARED=ON" "-DSDL_STATIC=OFF" "-DCMAKE_INSTALL_PREFIX=/Users/user/train-sdl2/target/debug/build/sdl2-sys-c97cc07ec1adce12/out" "-DCMAKE_C_FLAGS= -ffunction-sections -fdata-sections -fPIC --target=arm64-apple-macosx -mmacosx-version-min=15.5" "-DCMAKE_C_COMPILER=/usr/bin/cc" "-DCMAKE_CXX_FLAGS= -ffunction-sections -fdata-sections -fPIC --target=arm64-apple-macosx -mmacosx-version-min=15.5" "-DCMAKE_CXX_COMPILER=/usr/bin/c++" "-DCMAKE_ASM_FLAGS= -ffunction-sections -fdata-sections -fPIC --target=arm64-apple-macosx -mmacosx-version-min=15.5" "-DCMAKE_ASM_COMPILER=/usr/bin/cc" "-DCMAKE_BUILD_TYPE=Release"
  -- Configuring incomplete, errors occurred!

  --- stderr
  CMake Error at CMakeLists.txt:5 (cmake_minimum_required):
    Compatibility with CMake < 3.5 has been removed from CMake.

    Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
    to tell CMake that the project requires at least <min> but has been updated
    to work with policies introduced by <max> or earlier.

    Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.



  thread 'main' panicked at /Users/user/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cmake-0.1.54/src/lib.rs:1119:5:

  command did not execute successfully, got: exit status: 1

  build script failed, must exit now
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

解決方法

.cargo/config.tomlファイルを作成し、

[env]
CMAKE_POLICY_VERSION_MINIMUM = "3.5"

を追記する。