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#!/bin/bash
set -eu -o pipefail
API_LEVEL=28
ARCH=arm64
CFLAGS=
ENABLE_CRC=false
ENABLE_CRYPTO=false
NDKDIR=$HOME/android-ndk-r21d
usage() {
cat << EOF
Usage: $0 [OPTION]... -- [MAKE_TARGET]...
Build libdeflate for Android.
--api-level=LEVEL Android API level to target (default: $API_LEVEL)
--arch=ARCH Architecture: arm32|arm64 (default: $ARCH)
--enable-crc Enable crc instructions
--enable-crypto Enable crypto instructions
--ndkdir=NDKDIR Android NDK directory (default: $NDKDIR)
EOF
}
if ! options=$(getopt -o '' \
-l 'api-level:,arch:,enable-crc,enable-crypto,help,ndkdir:' -- "$@"); then
usage 1>&2
exit 1
fi
eval set -- "$options"
while [ $# -gt 0 ]; do
case "$1" in
--api-level)
API_LEVEL="$2"
shift
;;
--arch)
ARCH="$2"
shift
;;
--enable-crc)
ENABLE_CRC=true
;;
--enable-crypto)
ENABLE_CRYPTO=true
;;
--help)
usage
exit 0
;;
--ndkdir)
NDKDIR="$2"
shift
;;
--)
shift
break
;;
*)
echo 1>&2 "Unknown option \"$1\""
usage 1>&2
exit 1
esac
shift
done
BINDIR=$NDKDIR/toolchains/llvm/prebuilt/linux-x86_64/bin/
case "$ARCH" in
arm|arm32|aarch32)
CC=$BINDIR/armv7a-linux-androideabi$API_LEVEL-clang
if $ENABLE_CRC || $ENABLE_CRYPTO; then
CFLAGS="-march=armv8-a"
if $ENABLE_CRC; then
CFLAGS+=" -mcrc"
else
CFLAGS+=" -mnocrc"
fi
if $ENABLE_CRYPTO; then
CFLAGS+=" -mfpu=crypto-neon-fp-armv8"
else
CFLAGS+=" -mfpu=neon"
fi
fi
;;
arm64|aarch64)
CC=$BINDIR/aarch64-linux-android$API_LEVEL-clang
features=""
if $ENABLE_CRC; then
features+="+crc"
fi
if $ENABLE_CRYPTO; then
features+="+crypto"
fi
if [ -n "$features" ]; then
CFLAGS="-march=armv8-a$features"
fi
;;
*)
echo 1>&2 "Unknown architecture: \"$ARCH\""
usage 1>&2
exit 1
esac
cmd=(make "-j$(grep -c processor /proc/cpuinfo)" "CC=$CC" "CFLAGS=$CFLAGS" "$@")
echo "${cmd[*]}"
"${cmd[@]}"
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