Only build arm64-v8a in CI

Author: luciferous

.github/workflows/build.yml

@@ -536,7 +536,7 @@ jobs:
       - name: Build
         run: |
           cd examples/llama.android
-          ./gradlew build --no-daemon
+          ./gradlew build --no-daemon -Ponly-arm64-v8a
 
 #  freeBSD-latest:
 #    runs-on: macos-12

examples/llama.android/app/build.gradle.kts

@@ -20,6 +20,14 @@ android {
         vectorDrawables {
             useSupportLibrary = true
         }
+        ndk {
+            // Workaround for https://github.com/llvm/llvm-project/issues/65820
+            // affecting armeabi-v7a. Build for arm64-v8a only when invoked
+            // with -Ponly-arm64-v8a (e.g. ./gradlew build -Ponly-arm64-v8a).
+            if (project.hasProperty("only-arm64-v8a")) {
+                abiFilters += listOf("arm64-v8a")
+            }
+        }
         externalNativeBuild {
             cmake {
                 cppFlags += listOf()