From: Yongmin Yoo 유용민 <redacted>
Date: Tue, 30 Jun 2026 10:12:04 +0000 (+0900)
Subject: examples : Improved inference performance of Android example project (#3913)
X-Git-Tag: upstream/1.9.2~115
X-Git-Url: https://git.djapps.eu/?a=commitdiff_plain;h=65dc3fece67c70dead38532cb27df49ff4db9ed2;p=pkg%2Fggml%2Fsources%2Fwhisper.cpp

examples : Improved inference performance of Android example project (#3913)

* fix/android-debug-inference-issue: Applied BUILD_TYPE=Release to NDK build of whisper.android example

* fix/android-debug-inference-issue: Applied BUILD_TYPE=Release to NDK build of whisper.android.java example
---

diff --git a/examples/whisper.android.java/app/build.gradle b/examples/whisper.android.java/app/build.gradle
index 543701e1..2dcda094 100644
--- a/examples/whisper.android.java/app/build.gradle
+++ b/examples/whisper.android.java/app/build.gradle
@@ -25,6 +25,18 @@ android {
   }
 
   buildTypes {
+    debug {
+      externalNativeBuild {
+        cmake {
+          // When the AGP build type is Debug, the native (NDK/CMake) build does not run
+          // compiler optimizations by default, causing a critical performance issue.
+          // We force CMAKE_BUILD_TYPE to Release here so native code stays optimized
+          // even in Debug AGP builds.
+          arguments "-DCMAKE_BUILD_TYPE=Release"
+        }
+      }
+    }
+
     release {
       signingConfig signingConfigs.debug
       minifyEnabled true
diff --git a/examples/whisper.android/app/build.gradle b/examples/whisper.android/app/build.gradle
index 9f407998..9ed13f84 100644
--- a/examples/whisper.android/app/build.gradle
+++ b/examples/whisper.android/app/build.gradle
@@ -22,12 +22,25 @@ android {
     }
 
     buildTypes {
+        debug {
+            externalNativeBuild {
+                cmake {
+                    // When the AGP build type is Debug, the native (NDK/CMake) build does not run
+                    // compiler optimizations by default, causing a critical performance issue.
+                    // We force CMAKE_BUILD_TYPE to Release here so native code stays optimized
+                    // even in Debug AGP builds.
+                    arguments "-DCMAKE_BUILD_TYPE=Release"
+                }
+            }
+        }
+
         release {
             signingConfig signingConfigs.debug
             minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
+
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_17
         targetCompatibility JavaVersion.VERSION_17