handle old os x

Author: Montana Low

lightgbm-sys/build.rs

@@ -37,20 +37,25 @@ fn main() {
 
  // CMake
  let mut dst = Config::new(&lgbm_root);
- let dst = dst
+ let mut dst = dst
  .profile("Release")
  .define("BUILD_STATIC_LIB", "ON")
  .define("CMAKE_POSITION_INDEPENDENT_CODE", "ON");
 
  #[cfg(feature = "cuda")]
- let dst = dst.define("USE_CUDA", "1").define("USE_CUDA_EXP", "1");
+ let mut dst = dst.define("USE_CUDA", "1").define("USE_CUDA_EXP", "1");
 
  #[cfg(target_os = "macos")]
- let dst = dst
- .define("CMAKE_C_COMPILER", "/opt/homebrew/opt/llvm/bin/clang")
- .define("CMAKE_CXX_COMPILER", "/opt/homebrew/opt/llvm/bin/clang++")
- .define("OPENMP_LIBRARIES", "/opt/homebrew/opt/llvm/lib")
- .define("OPENMP_INCLUDES", "/opt/homebrew/opt/llvm/include");
+ {
+ let path = PathBuf::from("/opt/homebrew/"); // check for m1 vs intel config
+ if let Ok(_dir) = std::fs::read_dir(&path) {
+ dst = dst
+ .define("CMAKE_C_COMPILER", "/opt/homebrew/opt/llvm/bin/clang")
+ .define("CMAKE_CXX_COMPILER", "/opt/homebrew/opt/llvm/bin/clang++")
+ .define("OPENMP_LIBRARIES", "/opt/homebrew/opt/llvm/lib")
+ .define("OPENMP_INCLUDES", "/opt/homebrew/opt/llvm/include");
+ };
+ }
 
  let dst = dst.build();