diff --git a/scripts/build_gc_release_android.bat b/scripts/build_gc_release_android.bat
new file mode 100644
index 000000000..db9ce3621
--- /dev/null
+++ b/scripts/build_gc_release_android.bat
@@ -0,0 +1,37 @@
+@rem Android Boehm, static, for programs compiled with -mtriple=<arch>-linux-android29.
+@rem
+@rem   scripts\build_gc_release_android.bat [arm64-v8a|x86_64]   (no argument: both)
+@rem
+@rem Needs the Android NDK (tested with r30) in ANDROID_NDK_HOME, and Ninja. Installs into
+@rem 3rdParty\gc\android\<abi>\release. API level 29 is the floor the default library needs
+@rem (timespec_get).
+@echo off
+setlocal
+
+if "%ANDROID_NDK_HOME%"=="" (
+    echo ANDROID_NDK_HOME is not set: point it at the Android NDK, e.g. C:\Android\android-ndk-r30
+    exit /b 1
+)
+if not exist "%ANDROID_NDK_HOME%\build\cmake\android.toolchain.cmake" (
+    echo "%ANDROID_NDK_HOME%" is not an Android NDK: build\cmake\android.toolchain.cmake is missing
+    exit /b 1
+)
+
+if "%~1"=="" (
+    call "%~f0" arm64-v8a || exit /b 1
+    call "%~f0" x86_64 || exit /b 1
+    exit /b 0
+)
+
+set ABI=%~1
+set ROOT=%~dp0..
+set BUILD_DIR=%ROOT%\__build\gc\android\%ABI%\release
+
+cmake -S "%ROOT%\3rdParty\gc-8.2.12" -B "%BUILD_DIR%" -G Ninja -Wno-dev ^
+    -DCMAKE_TOOLCHAIN_FILE="%ANDROID_NDK_HOME%\build\cmake\android.toolchain.cmake" ^
+    -DANDROID_ABI=%ABI% -DANDROID_PLATFORM=android-29 ^
+    -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=OFF -DCMAKE_POSITION_INDEPENDENT_CODE=ON ^
+    -DCMAKE_INSTALL_PREFIX="%ROOT%\3rdParty\gc\android\%ABI%\release" ^
+    -Denable_threads=ON -Denable_cplusplus=OFF -Denable_docs=OFF -Dbuild_tests=OFF -Dbuild_cord=OFF || exit /b 1
+cmake --build "%BUILD_DIR%" -j 8 || exit /b 1
+cmake --install "%BUILD_DIR%" || exit /b 1
diff --git a/scripts/build_tslang_runtime_release_android.bat b/scripts/build_tslang_runtime_release_android.bat
new file mode 100644
index 000000000..e1e0e952f
--- /dev/null
+++ b/scripts/build_tslang_runtime_release_android.bat
@@ -0,0 +1,36 @@
+@rem TypeScriptAsyncRuntime for Android, linked into programs compiled with
+@rem -mtriple=<arch>-linux-android29.
+@rem
+@rem   scripts\build_tslang_runtime_release_android.bat [arm64-v8a|x86_64]   (no argument: both)
+@rem
+@rem Needs the Android NDK in ANDROID_NDK_HOME, Ninja, the Android gc
+@rem (scripts\build_gc_release_android.bat) for gc.h, and 3rdParty\llvm\x64\release\include for
+@rem the one header-only MLIR file (see tslang\runtime\CMakeLists.txt). Installs
+@rem libTypeScriptAsyncRuntime.a into __build\tslang-runtime\release\android\<abi>.
+@echo off
+setlocal
+
+if "%ANDROID_NDK_HOME%"=="" (
+    echo ANDROID_NDK_HOME is not set: point it at the Android NDK, e.g. C:\Android\android-ndk-r30
+    exit /b 1
+)
+
+if "%~1"=="" (
+    call "%~f0" arm64-v8a || exit /b 1
+    call "%~f0" x86_64 || exit /b 1
+    exit /b 0
+)
+
+set ABI=%~1
+set ROOT=%~dp0..
+set BUILD_DIR=%ROOT%\__build\tslang-runtime\ninja\android\%ABI%\release
+
+cmake -S "%ROOT%\tslang\runtime" -B "%BUILD_DIR%" -G Ninja -Wno-dev ^
+    -DCMAKE_TOOLCHAIN_FILE="%ANDROID_NDK_HOME%\build\cmake\android.toolchain.cmake" ^
+    -DANDROID_ABI=%ABI% -DANDROID_PLATFORM=android-29 ^
+    -DCMAKE_BUILD_TYPE=Release ^
+    -DTSLANG_GC_INCLUDE="%ROOT%\3rdParty\gc\android\%ABI%\release\include" ^
+    -DTSLANG_MLIR_INCLUDE="%ROOT%\3rdParty\llvm\x64\release\include" ^
+    -DCMAKE_INSTALL_PREFIX="%ROOT%\__build\tslang-runtime\release\android\%ABI%" || exit /b 1
+cmake --build "%BUILD_DIR%" -j 8 || exit /b 1
+cmake --install "%BUILD_DIR%" || exit /b 1
diff --git a/tslang/runtime/CMakeLists.txt b/tslang/runtime/CMakeLists.txt
index e4ef008aa..664c98be4 100644
--- a/tslang/runtime/CMakeLists.txt
+++ b/tslang/runtime/CMakeLists.txt
@@ -22,7 +22,13 @@ if (NOT EXISTS "${TSLANG_MLIR_INCLUDE}/mlir/ExecutionEngine/AsyncRuntime.h")
 endif()
 
 set(SRC "${CMAKE_CURRENT_SOURCE_DIR}/../lib/TypeScriptAsyncRuntime")
-add_library(TypeScriptAsyncRuntime STATIC "${SRC}/AsyncRuntime.cpp" "${SRC}/DynamicRuntime.cpp")
+# The same sources as lib/TypeScriptAsyncRuntime/CMakeLists.txt: without AsyncGCThreads.cpp a `gc`
+# program using async does not link (GC_enable_threads); ProcessHeap.cpp is empty off Windows.
+add_library(TypeScriptAsyncRuntime STATIC
+  "${SRC}/AsyncRuntime.cpp"
+  "${SRC}/AsyncGCThreads.cpp"
+  "${SRC}/ProcessHeap.cpp"
+  "${SRC}/DynamicRuntime.cpp")
 target_include_directories(TypeScriptAsyncRuntime PRIVATE
   "${CMAKE_CURRENT_SOURCE_DIR}/../include"
   "${CMAKE_CURRENT_SOURCE_DIR}/../lib"