#!/bin/bash

#
# Copyright (C) 2025 KonstaKANG
#
# SPDX-License-Identifier: LGPL-2.1-or-later
#

if [ ! -d "$ANDROID_NDK_HOME" ]; then
  echo "ANDROID_NDK_HOME environment variable is not properly set!"
  exit 1
fi

export TOOLCHAIN=$ANDROID_NDK_HOME/toolchains/llvm/prebuilt/linux-x86_64

export TARGET=aarch64-linux-android
export API=35
export CC="$TOOLCHAIN/bin/clang --target=$TARGET$API"
export CXX="$TOOLCHAIN/bin/clang++ --target=$TARGET$API"
export AR=$TOOLCHAIN/bin/llvm-ar
export AS=$CC
export LD=$TOOLCHAIN/bin/ld
export RANLIB=$TOOLCHAIN/bin/llvm-ranlib
export STRIP=$TOOLCHAIN/bin/llvm-strip

echo "Running autoconf..."
touch ltconfig
libtoolize --force --copy --automake
aclocal
autoheader
automake --foreign --copy --add-missing
touch depcomp
autoconf

ALSA_CONFIG=" \
--disable-aload \
--host=aarch64-linux \
--with-configdir=/vendor/etc/alsa \
--with-plugindir=/vendor/etc/alsa/lib/alsa-lib \
--with-versioned=false"

echo "Generating configuration..."
echo "./configure $ALSA_CONFIG $TARGET"
./configure $ALSA_CONFIG $TARGET

cat > include/version.h <<EOF
/*
 *  version.h
 */

#define SND_LIB_MAJOR		$(cat version | cut -d . -f 1) /**< major number of library version */
#define SND_LIB_MINOR		$(cat version | cut -d . -f 2) /**< minor number of library version */
#define SND_LIB_SUBMINOR	$(cat version | cut -d . -f 3) /**< subminor number of library version */
#define SND_LIB_EXTRAVER	1000000 /**< extra version number, used mainly for betas */
/** library version */
#define SND_LIB_VER(maj, min, sub) (((maj)<<16)|((min)<<8)|(sub))
#define SND_LIB_VERSION SND_LIB_VER(SND_LIB_MAJOR, SND_LIB_MINOR, SND_LIB_SUBMINOR)
/** library version (string) */
#define SND_LIB_VERSION_STR	"$(cat version)"
EOF

exit 0