Fix Android aarch64 build and suppress Maven download progress

Three changes:

1. Bump Android platform from API 24 to API 28 (CMakeLists.txt and
   publish.yml). mtmd-helper.cpp includes vendor/sheredom/subprocess.h
   which calls posix_spawn* / posix_spawn_file_actions_*; these symbols
   are available in the NDK libc at all API levels but their <spawn.h>
   declarations are only exposed when __ANDROID_API__ >= 28. API 24 was
   enough for getifaddrs; API 28 is required to compile mtmd-helper.cpp.
   Both Android build jobs (CPU-only and OpenCL/Adreno) are updated.

2. Update CMakeLists.txt comment to document why API 28 is needed
   (__ANDROID_API__ now gates both getifaddrs and posix_spawn*).

3. Add --no-transfer-progress to the four mvn compile steps that were
   missing it on macOS / Linux native build jobs and to both publish
   (snapshot + release) deploy steps, eliminating the verbose per-chunk
   download progress lines from CI logs.

Note: The NotJavadoc compile error on macOS and Ubuntu was already fixed
by commit 8932fd8 (removing the orphaned duplicate Javadoc block before
completeBatch). This commit does not touch that check.

https://claude.ai/code/session_01RcJfwgM2cfjd3n5A8JrGqe

Author: claude

.github/workflows/publish.yml

@@ -164,7 +164,7 @@ jobs:
       - name: Build libraries
         shell: bash
         run: |
-          .github/dockcross/dockcross-android-arm64 .github/build.sh "-DANDROID_PLATFORM=android-24 -DOS_NAME=Linux-Android -DOS_ARCH=aarch64"
+          .github/dockcross/dockcross-android-arm64 .github/build.sh "-DANDROID_PLATFORM=android-28 -DOS_NAME=Linux-Android -DOS_ARCH=aarch64"
       - name: Upload artifacts
         uses: actions/upload-artifact@v7
         with:
@@ -180,7 +180,7 @@ jobs:
       - name: Build libraries
         shell: bash
         run: |
-          .github/dockcross/dockcross-android-arm64 .github/build_opencl_android.sh "-DANDROID_PLATFORM=android-24 -DOS_NAME=Linux-Android -DOS_ARCH=aarch64 -DGGML_OPENCL=ON -DGGML_OPENCL_EMBED_KERNELS=ON -DGGML_OPENCL_USE_ADRENO_KERNELS=ON"
+          .github/dockcross/dockcross-android-arm64 .github/build_opencl_android.sh "-DANDROID_PLATFORM=android-28 -DOS_NAME=Linux-Android -DOS_ARCH=aarch64 -DGGML_OPENCL=ON -DGGML_OPENCL_EMBED_KERNELS=ON -DGGML_OPENCL_USE_ADRENO_KERNELS=ON"
       - name: Upload artifacts
         uses: actions/upload-artifact@v7
         with:
@@ -212,7 +212,7 @@ jobs:
       - name: Build libraries
         shell: bash
         run: |
-          mvn compile
+          mvn --no-transfer-progress compile
           .github/build.sh -DLLAMA_METAL=OFF -DGGML_NATIVE=OFF -DBUILD_TESTING=ON
       - name: Run C++ unit tests
         run: ctest --test-dir build --output-on-failure
@@ -243,7 +243,7 @@ jobs:
       - name: Build libraries
         shell: bash
         run: |
-          mvn compile
+          mvn --no-transfer-progress compile
           .github/build.sh -DLLAMA_METAL_EMBED_LIBRARY=ON -DBUILD_TESTING=ON
       - name: Run C++ unit tests
         run: ctest --test-dir build --output-on-failure
@@ -334,7 +334,7 @@ jobs:
           cat /proc/cpuinfo
       - name: Build libraries
         run: |
-          mvn -q compile
+          mvn -q --no-transfer-progress compile
           .github/build.sh -DBUILD_TESTING=ON
       - name: Run C++ unit tests
         run: ctest --test-dir build --output-on-failure
@@ -360,7 +360,7 @@ jobs:
       - name: Build libraries
         shell: bash
         run: |
-          mvn compile
+          mvn --no-transfer-progress compile
           .github/build.sh -DLLAMA_METAL_EMBED_LIBRARY=ON -DGGML_NATIVE=OFF -DBUILD_TESTING=ON
       - name: Run C++ unit tests
         run: ctest --test-dir build --output-on-failure
@@ -873,7 +873,7 @@ jobs:
           gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
           gpg-passphrase: MAVEN_GPG_PASSPHRASE
       - name: Publish snapshot
-        run: mvn --batch-mode -P release,cuda,opencl-android -Dmaven.test.skip=true deploy
+        run: mvn --batch-mode --no-transfer-progress -P release,cuda,opencl-android -Dmaven.test.skip=true deploy
         env:
           MAVEN_USERNAME: ${{ secrets.CENTRAL_USERNAME }}
           MAVEN_PASSWORD: ${{ secrets.CENTRAL_TOKEN }}
@@ -948,7 +948,7 @@ jobs:
           gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
           gpg-passphrase: MAVEN_GPG_PASSPHRASE
       - name: Publish release
-        run: mvn --batch-mode -P release,cuda,opencl-android -Dmaven.test.skip=true deploy
+        run: mvn --batch-mode --no-transfer-progress -P release,cuda,opencl-android -Dmaven.test.skip=true deploy
         env:
           MAVEN_USERNAME: ${{ secrets.CENTRAL_USERNAME }}
           MAVEN_PASSWORD: ${{ secrets.CENTRAL_TOKEN }}

CLAUDE.md

@@ -62,7 +62,7 @@ Three places wire it together (mirrors the CUDA classifier pattern):
 Local sanity build:
 ```bash
 .github/dockcross/dockcross-android-arm64 .github/build_opencl_android.sh \
-  "-DANDROID_PLATFORM=android-24 -DOS_NAME=Linux-Android -DOS_ARCH=aarch64 \
+  "-DANDROID_PLATFORM=android-28 -DOS_NAME=Linux-Android -DOS_ARCH=aarch64 \
    -DGGML_OPENCL=ON -DGGML_OPENCL_EMBED_KERNELS=ON \
    -DGGML_OPENCL_USE_ADRENO_KERNELS=ON"
 ```

CMakeLists.txt

@@ -47,12 +47,14 @@ if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_L
     link_libraries(stdc++fs)
 endif()
 
-# Android standalone toolchains default to API level 21, but cpp-httplib uses
-# getifaddrs/freeifaddrs which are only declared in <ifaddrs.h> when
-# __ANDROID_API__ >= 24. NDK unified sysroots (r14b+) include the symbol in
-# libc regardless of level; this exposes the declaration for all targets.
+# Android NDK headers gate symbols on __ANDROID_API__:
+#   >= 24: getifaddrs/freeifaddrs (<ifaddrs.h>), needed by cpp-httplib.
+#   >= 28: posix_spawn / posix_spawnp / posix_spawn_file_actions_* (<spawn.h>),
+#          needed by mtmd-helper.cpp (vendor/sheredom/subprocess.h).
+# NDK unified sysroots (r14b+) include all these symbols in libc regardless of
+# level; the define only controls which declarations are visible in the headers.
 if(ANDROID_ABI)
-    add_compile_definitions(__ANDROID_API__=24)
+    add_compile_definitions(__ANDROID_API__=28)
 endif()
 
 set(LLAMA_BUILD_COMMON ON)