no mac 13 build environments mean cross compilation is required.

Author: krazyjakee

.github/workflows/builds.yml

@@ -54,9 +54,9 @@ jobs:
             name: macos-arm64
             build_cmd: ./build.sh release-examples
             build_dir: build-release
-          - os: macos-13
+          - os: macos-latest
             name: macos-x64
-            build_cmd: ./build.sh release-examples
+            build_cmd: ./build.sh release-examples --macos-arch x86_64
             build_dir: build-release
           - os: windows-latest
             name: windows-x64
@@ -117,6 +117,10 @@ jobs:
       - name: Install Rust (stable)
         uses: dtolnay/rust-toolchain@stable
 
+      - name: Install Rust cross-compilation target
+        if: matrix.name == 'macos-x64'
+        run: rustup target add x86_64-apple-darwin
+
       # ---------- Cache Cargo ----------
       - name: Cache Cargo registry
         uses: actions/cache@v4

.github/workflows/make-release.yml

@@ -33,7 +33,7 @@ jobs:
           - os: macos-latest
             name: macos-arm64
             generator: Ninja
-          - os: macos-13
+          - os: macos-latest
             name: macos-x64
             generator: Ninja
           - os: windows-latest
@@ -128,6 +128,10 @@ jobs:
       - name: Install Rust (stable)
         uses: dtolnay/rust-toolchain@stable
 
+      - name: Install Rust cross-compilation target
+        if: matrix.name == 'macos-x64'
+        run: rustup target add x86_64-apple-darwin
+
       # ---------- Cache Cargo ----------
       - name: Cache Cargo registry
         uses: actions/cache@v4
@@ -165,7 +169,11 @@ jobs:
             exit 1
           fi
 
-          ./build.sh release-examples --version "$version" --bundle --prefix "$bundleDir"
+          if [[ "${{ matrix.name }}" == "macos-x64" ]]; then
+            ./build.sh release-examples --version "$version" --bundle --prefix "$bundleDir" --macos-arch x86_64
+          else
+            ./build.sh release-examples --version "$version" --bundle --prefix "$bundleDir"
+          fi
 
           # List bundle contents
           echo "Bundle contents:"

CMakeLists.txt

@@ -163,6 +163,22 @@ find_program(CARGO_EXECUTABLE NAMES cargo REQUIRED)
 
 set(RUST_ROOT ${LIVEKIT_ROOT_DIR}/client-sdk-rust)
 
+# Determine Rust target triple for cross-compilation on macOS
+set(RUST_TARGET_TRIPLE "")
+if(APPLE AND CMAKE_OSX_ARCHITECTURES)
+  if(CMAKE_OSX_ARCHITECTURES STREQUAL "x86_64")
+    set(RUST_TARGET_TRIPLE "x86_64-apple-darwin")
+  elseif(CMAKE_OSX_ARCHITECTURES STREQUAL "arm64")
+    set(RUST_TARGET_TRIPLE "aarch64-apple-darwin")
+  endif()
+endif()
+
+if(RUST_TARGET_TRIPLE)
+  set(RUST_TARGET_DIR "${RUST_ROOT}/target/${RUST_TARGET_TRIPLE}")
+else()
+  set(RUST_TARGET_DIR "${RUST_ROOT}/target")
+endif()
+
 set(RUN_CARGO_SCRIPT ${LIVEKIT_BINARY_DIR}/run_cargo.cmake)
 file(WRITE ${RUN_CARGO_SCRIPT}
 "if(NOT DEFINED CFG)
@@ -180,6 +196,11 @@ if(NOT CFG STREQUAL \"Debug\")
   list(APPEND ARGS --release)
 endif()
 
+if(DEFINED RUST_TARGET AND NOT RUST_TARGET STREQUAL \"\")
+  list(APPEND ARGS --target \"\${RUST_TARGET}\")
+  message(STATUS \"[run_cargo.cmake] Cross-compiling for target: \${RUST_TARGET}\")
+endif()
+
 message(STATUS \"[run_cargo.cmake] CFG=\${CFG}  CARGO=\${CARGO}  PROTOC=\${PROTOC_PATH}\")
 set(ENV{PROTOC} \"\${PROTOC_PATH}\")
 
@@ -223,8 +244,8 @@ if(WIN32)
 elseif(APPLE)
   # macOS: use dynamic library (.dylib) to isolate Debug/Release ABI differences
   add_library(livekit_ffi SHARED IMPORTED GLOBAL)
-  set(RUST_LIB_DEBUG   "${RUST_ROOT}/target/debug/liblivekit_ffi.dylib")
-  set(RUST_LIB_RELEASE "${RUST_ROOT}/target/release/liblivekit_ffi.dylib")
+  set(RUST_LIB_DEBUG   "${RUST_TARGET_DIR}/debug/liblivekit_ffi.dylib")
+  set(RUST_LIB_RELEASE "${RUST_TARGET_DIR}/release/liblivekit_ffi.dylib")
 
   set_target_properties(livekit_ffi PROPERTIES
     IMPORTED_CONFIGURATIONS "Debug;Release;RelWithDebInfo;MinSizeRel"
@@ -238,8 +259,8 @@ elseif(APPLE)
 else()
   # Linux: use dynamic library (.so) to isolate Debug/Release ABI differences
   add_library(livekit_ffi SHARED IMPORTED GLOBAL)
-  set(RUST_LIB_DEBUG   "${RUST_ROOT}/target/debug/liblivekit_ffi.so")
-  set(RUST_LIB_RELEASE "${RUST_ROOT}/target/release/liblivekit_ffi.so")
+  set(RUST_LIB_DEBUG   "${RUST_TARGET_DIR}/debug/liblivekit_ffi.so")
+  set(RUST_LIB_RELEASE "${RUST_TARGET_DIR}/release/liblivekit_ffi.so")
 
   set_target_properties(livekit_ffi PROPERTIES
     IMPORTED_CONFIGURATIONS "Debug;Release;RelWithDebInfo;MinSizeRel"
@@ -264,6 +285,7 @@ add_custom_command(
           -DRUST_ROOT=${RUST_ROOT}
           -DCARGO=${CARGO_EXECUTABLE}
           -DPROTOC_PATH=${Protobuf_PROTOC_EXECUTABLE}
+          -DRUST_TARGET=${RUST_TARGET_TRIPLE}
           -P "${RUN_CARGO_SCRIPT}"
   WORKING_DIRECTORY "${RUST_ROOT}"
   DEPENDS ${RUST_SOURCES}
@@ -381,8 +403,8 @@ if(LIVEKIT_IS_TOPLEVEL)
     )
   elseif(APPLE)
     # macOS: copy .dylib
-    set(FFI_LIB_DEBUG   "${RUST_ROOT}/target/debug/liblivekit_ffi.dylib")
-    set(FFI_LIB_RELEASE "${RUST_ROOT}/target/release/liblivekit_ffi.dylib")
+    set(FFI_LIB_DEBUG   "${RUST_TARGET_DIR}/debug/liblivekit_ffi.dylib")
+    set(FFI_LIB_RELEASE "${RUST_TARGET_DIR}/release/liblivekit_ffi.dylib")
     add_custom_command(
       TARGET livekit POST_BUILD
       COMMAND ${CMAKE_COMMAND} -E copy
@@ -404,18 +426,18 @@ if(LIVEKIT_IS_TOPLEVEL)
     add_custom_command(
       TARGET livekit POST_BUILD
       COMMAND /usr/bin/install_name_tool
-              -change "${RUST_ROOT}/target/release/deps/liblivekit_ffi.dylib"
+              -change "${RUST_TARGET_DIR}/release/deps/liblivekit_ffi.dylib"
                       "@rpath/liblivekit_ffi.dylib"
-              -change "${RUST_ROOT}/target/debug/deps/liblivekit_ffi.dylib"
+              -change "${RUST_TARGET_DIR}/debug/deps/liblivekit_ffi.dylib"
                       "@rpath/liblivekit_ffi.dylib"
               "$<TARGET_FILE:livekit>"
       COMMENT "Fix dependency path in liblivekit.dylib -> liblivekit_ffi.dylib"
       VERBATIM
     )
   else()
     # Linux: copy .so
-    set(FFI_LIB_DEBUG   "${RUST_ROOT}/target/debug/liblivekit_ffi.so")
-    set(FFI_LIB_RELEASE "${RUST_ROOT}/target/release/liblivekit_ffi.so")
+    set(FFI_LIB_DEBUG   "${RUST_TARGET_DIR}/debug/liblivekit_ffi.so")
+    set(FFI_LIB_RELEASE "${RUST_TARGET_DIR}/release/liblivekit_ffi.so")
     add_custom_command(
       TARGET livekit POST_BUILD
       COMMAND ${CMAKE_COMMAND} -E copy

build.sh

@@ -135,6 +135,10 @@ configure() {
     echo "==> Injecting LIVEKIT_VERSION=${LIVEKIT_VERSION}"
     extra_args+=("-DLIVEKIT_VERSION=${LIVEKIT_VERSION}")
   fi
+  if [[ -n "${MACOS_ARCH}" ]]; then
+    echo "==> Setting CMAKE_OSX_ARCHITECTURES=${MACOS_ARCH}"
+    extra_args+=("-DCMAKE_OSX_ARCHITECTURES=${MACOS_ARCH}")
+  fi
   if ((${#extra_args[@]})); then
     if ! cmake --preset "${PRESET}" "${extra_args[@]}"; then
       echo "Warning: CMake preset '${PRESET}' failed. Falling back to traditional configure..."