android : update CMakeLists.txt to use FetchContent for ggml (#3268)

* android : update CMakeLists.txt to use FetchContent for ggml

This commit updates the CMakeLists.txt file for the Android Whisper
example to use FetchContent for managing the ggml library.

The motivation for this change is avoid having to make manual changes to
the CMakeLists.txt file after syncing the ggml library.

I've built and run the example locally to verify that it works as
expected.

Refs: https://github.com/ggml-org/whisper.cpp/pull/3265#issuecomment-2986715717

* android.java : update cmake to use FetchContent for ggml

This commit updates the CMake configuration for the Android Java example
to use `FetchContent` for including the `ggml` library. Do be able to
use FetchContent we also update the `compileSdkVersion` and
`targetSdkVersion` to 31, and the `buildToolsVersion` to '30.0.3'.
This also required a an update to the Gradle plugin version to 7.4.0.

The motivation for this change is avoid having to make manual changes to
the CMakeLists.txt file after syncing the ggml library.

examples/whisper.android.java/app/build.gradle

@@ -3,13 +3,13 @@ plugins {
 }
 
 android {
-  compileSdkVersion 30
+  compileSdkVersion 31
   buildToolsVersion '30.0.3'
 
   defaultConfig {
     applicationId "com.litongjava.whisper.android.java"
     minSdkVersion 21
-    targetSdkVersion 30
+    targetSdkVersion 31
     versionCode 1
     versionName "1.0"
 

examples/whisper.android.java/app/src/main/AndroidManifest.xml

@@ -10,7 +10,7 @@
     android:roundIcon="@mipmap/ic_launcher_round"
     android:supportsRtl="true"
     android:theme="@style/Theme.Whisperandroidjava">
-    <activity android:name=".MainActivity">
+    <activity android:name=".MainActivity" android:exported="true">
       <intent-filter>
         <action android:name="android.intent.action.MAIN" />
 

examples/whisper.android.java/app/src/main/jni/whisper/CMakeLists.txt

@@ -6,28 +6,14 @@ set(CMAKE_CXX_STANDARD 17)
 set(WHISPER_LIB_DIR ${CMAKE_SOURCE_DIR}/../../../../../../../)
 
 set(SOURCE_FILES
-    ${WHISPER_LIB_DIR}/ggml/src/ggml.c
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/ggml-cpu.c
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/traits.cpp
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/arch/arm/quants.c
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/arch/arm/repack.cpp
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/quants.c
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/ggml-cpu.cpp
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/unary-ops.cpp
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/binary-ops.cpp
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/vec.cpp
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/ops.cpp
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-alloc.c
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-backend.cpp
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-backend-reg.cpp
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-quants.c
-    ${WHISPER_LIB_DIR}/ggml/src/ggml-threading.cpp
     ${WHISPER_LIB_DIR}/src/whisper.cpp
     ${CMAKE_SOURCE_DIR}/jni.c
     )
 
 find_library(LOG_LIB log)
 
+include(FetchContent)
+
 function(build_library target_name)
     add_library(
         ${target_name}
@@ -35,7 +21,10 @@ function(build_library target_name)
         ${SOURCE_FILES}
     )
 
-    target_link_libraries(${target_name} ${LOG_LIB} android)
+    FetchContent_Declare(ggml SOURCE_DIR ${WHISPER_LIB_DIR}/ggml)
+    FetchContent_MakeAvailable(ggml)
+
+    target_link_libraries(${target_name} ${LOG_LIB} android ggml)
     target_compile_definitions(${target_name} PUBLIC GGML_USE_CPU)
 
     if (${target_name} STREQUAL "whisper_v8fp16_va")

examples/whisper.android.java/build.gradle

@@ -2,10 +2,10 @@
 buildscript {
   repositories {
     google()
-    jcenter()
+    mavenCentral()
   }
   dependencies {
-    classpath "com.android.tools.build:gradle:4.1.3"
+    classpath "com.android.tools.build:gradle:7.4.0"
 
     // NOTE: Do not place your application dependencies here; they belong
     // in the individual module build.gradle files
@@ -15,7 +15,7 @@ buildscript {
 allprojects {
   repositories {
     google()
-    jcenter()
+    mavenCentral()
     maven { url "https://maven.aliyun.com/repository/gradle-plugin" }
   }
 }

examples/whisper.android.java/gradle/wrapper/gradle-wrapper.properties

@@ -3,4 +3,4 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-all.zip

examples/whisper.android/lib/src/main/jni/whisper/CMakeLists.txt

@@ -14,34 +14,10 @@ set(
     ${CMAKE_SOURCE_DIR}/jni.c
     )
 
-# TODO: this needs to be updated to work with the new ggml CMakeLists
-
-if (NOT GGML_HOME)
-    set(
-        SOURCE_FILES
-        ${SOURCE_FILES}
-        ${WHISPER_LIB_DIR}/ggml/src/ggml.c
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-alloc.c
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-backend.cpp
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-backend-reg.cpp
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-quants.c
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-threading.cpp
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/ggml-cpu.c
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/ggml-cpu.cpp
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/hbm.cpp
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/traits.cpp
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/unary-ops.cpp
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/binary-ops.cpp
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/vec.cpp
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/ops.cpp
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/arch/arm/quants.c
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/arch/arm/repack.cpp
-        ${WHISPER_LIB_DIR}/ggml/src/ggml-cpu/quants.c
-        )
-endif()
-
 find_library(LOG_LIB log)
 
+include(FetchContent)
+
 function(build_library target_name)
     add_library(
         ${target_name}
@@ -70,15 +46,13 @@ function(build_library target_name)
     endif ()
 
     if (GGML_HOME)
-        include(FetchContent)
         FetchContent_Declare(ggml SOURCE_DIR ${GGML_HOME})
-        FetchContent_MakeAvailable(ggml)
-
-        target_compile_options(ggml PRIVATE ${GGML_COMPILE_OPTIONS})
-        target_link_libraries(${target_name} ${LOG_LIB} android ggml)
     else()
-        target_link_libraries(${target_name} ${LOG_LIB} android)
+        FetchContent_Declare(ggml SOURCE_DIR ${WHISPER_LIB_DIR}/ggml)
     endif()
+    FetchContent_MakeAvailable(ggml)
+    target_compile_options(ggml PRIVATE ${GGML_COMPILE_OPTIONS})
+    target_link_libraries(${target_name} ${LOG_LIB} android ggml)
 
 
 endfunction()