Use mold for CI

.github/actions/setup/action.yml

@@ -21,6 +21,18 @@ runs:
         restore-keys: ${{ runner.os }}
         max-size: 10000M
 
+    - name: Set up mold (Linux)
+      uses: rui314/setup-mold@v1
+      if: runner.os == 'Linux'
+      with:
+        make-default: false
+    - name: Set up mold (macOS)
+      shell: bash
+      if: runner.os == 'macOS'
+      run: |
+        brew update
+        brew install mold
+
     - name: Cache Gradle dependencies
       uses: actions/cache@v4
       with:

build.py

@@ -361,6 +361,8 @@ def build_native():
         os.environ["CARGO_INCREMENTAL"] = "0"
     if ccache := shutil.which("ccache"):
         os.environ["NDK_CCACHE"] = ccache
+    if mold := shutil.which("mold"):
+        os.environ["NDK_MOLD"] = mold
 
     build_rust_src(targets)
     build_cpp_src(targets)

native/src/Application.mk

@@ -7,6 +7,10 @@ APP_THIN_ARCHIVE := true
 APP_STRIP_MODE   := none
 APP_SUPPORT_FLEXIBLE_PAGE_SIZES := true
 
+ifdef NDK_MOLD
+APP_LDFLAGS	     += -fuse-ld=$(NDK_MOLD) -Wl,-z,muldefs
+endif
+
 ifdef MAGISK_DEBUG
 
 NDK_APP_OUT 	 := ./obj/debug