mieru.sh

#!/bin/bash
# Build the Mieru client binary for all Android ABIs and install them as
# bundled native executables (app/executableSo/<abi>/libmieru.so).
#
# This lets NekoBox run Mieru profiles without the separate external plugin
# (moe.matsuri.exe.mieru). PluginManager.initNativeInternal resolves
# "mieru-plugin" -> libmieru.so from nativeLibraryDir.
#
# Usage: ./run lib mieru
set -e
set -o pipefail

source "buildScript/init/env.sh"

if [ -z "$ANDROID_NDK_HOME" ]; then
  echo "Error: ANDROID_NDK_HOME is not set (NDK required to cross-compile Mieru)." >&2
  exit 1
fi

# Mieru release tag to build from source.
MIERU_VERSION="${MIERU_VERSION:-v3.34.0}"

DEPS="$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64/bin"
# macOS NDK host dirs are darwin-x86_64 / darwin-arm64; fall back if linux is absent.
if [ ! -d "$DEPS" ]; then
  DEPS="$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/darwin-x86_64/bin"
fi
if [ ! -d "$DEPS" ]; then
  DEPS="$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/darwin-arm64/bin"
fi
if [ ! -d "$DEPS" ]; then
  echo "Error: NDK LLVM toolchain not found under $ANDROID_NDK_HOME (unsupported host or NDK layout)." >&2
  exit 1
fi

WORK="$(pwd)/.mieru-build"
OUT="$(pwd)/app/executableSo"

# Fetch source (shallow clone at the pinned tag). Re-clone fresh if the existing
# checkout is missing or its git operations fail (e.g. corrupted by a prior build).
need_clone=1
if [ -d "$WORK/.git" ]; then
  if git -C "$WORK" fetch --depth 1 origin "refs/tags/$MIERU_VERSION" \
     && git -C "$WORK" checkout -q FETCH_HEAD; then
    need_clone=0
  else
    echo ">> existing $WORK is unusable; re-cloning"
  fi
fi
if [ "$need_clone" -eq 1 ]; then
  rm -rf "$WORK"
  git clone --depth 1 --branch "$MIERU_VERSION" https://github.com/enfein/mieru.git "$WORK"
fi

pushd "$WORK" >/dev/null

build_abi() {
  local abi="$1" goarch="$2" cc="$3" goarm="$4"
  echo ">> building libmieru.so for $abi"
  mkdir -p "$OUT/$abi"
  env GOOS=android GOARCH="$goarch" ${goarm:+GOARM=$goarm} CGO_ENABLED=1 \
    CC="$DEPS/$cc" \
    go build -trimpath -ldflags='-s -w' \
      -o "$OUT/$abi/libmieru.so" ./cmd/mieru
}

build_abi "arm64-v8a"   "arm64" "aarch64-linux-android21-clang"
build_abi "armeabi-v7a" "arm"   "armv7a-linux-androideabi21-clang" "7"
build_abi "x86"         "386"   "i686-linux-android21-clang"
build_abi "x86_64"      "amd64" "x86_64-linux-android21-clang"

popd >/dev/null

echo ">> installed Mieru binaries:"
ls -la "$OUT"/*/libmieru.so