build-sqlcipher-android.sh

#!/usr/bin/env bash

# This script downloads and builds the SQLcipher library for Android.

set -euvx

if [ "$#" -ne 6 ]
then
    echo "Usage:"
    echo "./build-sqlcipher-android.sh <ABSOLUTE_SRC_DIR> <DIST_DIR> <TOOLCHAIN_PATH> <TOOLCHAIN> <ANDROID_NDK_API_VERSION> <OPENSSL_DIR>"
    exit 1
fi

SQLCIPHER_DIR=$1
DIST_DIR=$2
TOOLCHAIN_PATH=$3
TOOLCHAIN=$4
ANDROID_NDK_API_VERSION=$5
OPENSSL_DIR=$6

if [ -d "$DIST_DIR" ]; then
  echo "$DIST_DIR"" folder already exists. Skipping build."
  exit 0
fi

cd "${SQLCIPHER_DIR}"

export TOOLCHAIN_BIN="$TOOLCHAIN_PATH""/bin/"
export CC="$TOOLCHAIN_BIN""$TOOLCHAIN""-gcc"
export CXX="$TOOLCHAIN_BIN""$TOOLCHAIN""-g++"
export RANLIB="$TOOLCHAIN_BIN""$TOOLCHAIN""-ranlib"
export LD="$TOOLCHAIN_BIN""$TOOLCHAIN""-ld"
export AR="$TOOLCHAIN_BIN""$TOOLCHAIN""-ar"
export CFLAGS="-D__ANDROID_API__=$ANDROID_NDK_API_VERSION"

SQLCIPHER_OUTPUT_PATH="/tmp/sqlcipher-""$TOOLCHAIN"_$$
mkdir -p "$SQLCIPHER_OUTPUT_PATH"

if [ "$TOOLCHAIN" == "i686-linux-android" ]
then
  HOST="i686-linux"
elif [ "$TOOLCHAIN" == "aarch64-linux-android" ]
then
  HOST="arm-linux"
elif [ "$TOOLCHAIN" == "arm-linux-androideabi" ]
then
  HOST="arm-linux"
else
  echo "Unknown toolchain"
  exit 1
fi

# Keep in sync with SQLCIPHER_CFLAGS in `build-sqlcipher-desktop.sh` for now (it probably makes
# sense to try to avoid this duplication in the future).
# TODO: We could probably prune some of these, and it would be nice to allow debug builds (which
# should set `SQLITE_DEBUG` and `SQLITE_ENABLE_API_ARMOR` and not `NDEBUG`).
SQLCIPHER_CFLAGS=" \
  -DSQLITE_HAS_CODEC \
  -DSQLITE_SOUNDEX \
  -DHAVE_USLEEP=1 \
  -DSQLITE_MAX_VARIABLE_NUMBER=99999 \
  -DSQLITE_THREADSAFE=1 \
  -DSQLITE_DEFAULT_JOURNAL_SIZE_LIMIT=1048576 \
  -DNDEBUG=1 \
  -DSQLITE_ENABLE_MEMORY_MANAGEMENT=1 \
  -DSQLITE_ENABLE_LOAD_EXTENSION \
  -DSQLITE_ENABLE_COLUMN_METADATA \
  -DSQLITE_ENABLE_UNLOCK_NOTIFY \
  -DSQLITE_ENABLE_RTREE \
  -DSQLITE_ENABLE_STAT3 \
  -DSQLITE_ENABLE_STAT4 \
  -DSQLITE_ENABLE_JSON1 \
  -DSQLITE_ENABLE_FTS3_PARENTHESIS \
  -DSQLITE_ENABLE_FTS4 \
  -DSQLITE_ENABLE_FTS5 \
  -DSQLCIPHER_CRYPTO_OPENSSL \
  -DSQLITE_ENABLE_DBSTAT_VTAB \
  -DSQLITE_SECURE_DELETE \
  -DSQLITE_DEFAULT_PAGE_SIZE=32768 \
  -DSQLITE_MAX_DEFAULT_PAGE_SIZE=32768 \
"

make clean || true

./configure --prefix="${SQLCIPHER_OUTPUT_PATH}" \
  --host="${HOST}" \
  --enable-tempstore=always \
  CFLAGS="${CFLAGS} ${SQLCIPHER_CFLAGS} -I${OPENSSL_DIR}/include -L${OPENSSL_DIR}/lib" \
  LIBS="-lcrypto -llog -lm" \
  LDFLAGS="$OPENSSL_DIR/lib/libcrypto.a "

make -j6
make install

mkdir -p "$DIST_DIR""/include/sqlcipher"
mkdir -p "$DIST_DIR""/lib"

cp -p "$SQLCIPHER_OUTPUT_PATH"/lib/libsqlcipher.a "$DIST_DIR"/lib/libsqlcipher.a

# Just in case, ensure that the created binaries are not -w.
chmod +w "$DIST_DIR"/lib/libsqlcipher.a
rm -rf "$SQLCIPHER_OUTPUT_PATH"