Android Build System: stage1

#!/bin/sh

ROOT_PATH="`pwd`"
NDK_PATH="$ROOT_PATH/android-ndk-r7"
SRC_PATH="$ROOT_PATH/src/stage1"
OUT_PATH="$ROOT_PATH/out/stage1"

NDK_PLATTFORM_PATH="$NDK_PATH/platforms/android-8/arch-arm"
NDK_TOOLCHAIN_PATH="$NDK_PATH/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86"
NDK_TOOLCHAIN_BIN_PATH="$NDK_TOOLCHAIN_PATH/bin"
NDK_TOOLCHAIN_LIB_PATH="$NDK_TOOLCHAIN_PATH/lib/gcc/arm-linux-androideabi/4.4.3/"
NDK_INCLUDE_PATH="$NDK_PLATTFORM_PATH/usr/include"
NDK_INCLUDE_TOOLCHAIN_PATH="$NDK_TOOLCHAIN_PATH/lib/gcc/arm-linux-androideabi/4.4.3/include"

PREFIX_PATH="$OUT_PATH/data/local/"
SYSROOT_PATH="$PREFIX_PATH"

BINUTILS_VERSION="2.20.1"
GCC_VERSION="4.4.3"
GDB_VERSION="7.1.x"
#NEWLIB_VERSION=""
GMP_VERSION="4.2.4"
MPFR_VERSION="2.4.1"
#MPC_VERSION=""
GOLD_VERSION=""

CONFIG="--prefix=$PREFIX_PATH"
CONFIG="$CONFIG --disable-werror"
#CONFIG="$CONFIG --host=arm-linux-androideabi"
CONFIG="$CONFIG --target=arm-linux-androideabi"
CONFIG="$CONFIG --with-sysroot=$SYSROOT_PATH"
CONFIG="$CONFIG --with-binutils-version=$BINUTILS_VERSION"
CONFIG="$CONFIG --with-gcc-version=$GCC_VERSION"
CONFIG="$CONFIG --with-gdb-version=$GDB_VERSION"
#CONFIG="$CONFIG --with-newlib-version=$NEWLIB_VERSION"
CONFIG="$CONFIG --with-gmp-version=$GMP_VERSION"
CONFIG="$CONFIG --with-mpfr-version=$MPFR_VERSION"
#CONFIG="$CONFIG --with-mpc-version=$MPC_VERSION"
#CONFIG="$CONFIG --with-gold-version=$GOLD_VERSION"

CFLAGS=""
CXXFLAGS="$CFLAGS"
LDFLAGS=""

echo "removing old sources"
rm -fr $SRC_PATH

echo "extracting new sources"
cd $ROOT_PATH/src
tar xf $ROOT_PATH/src.tar
mv src stage1
cd $ROOT_PATH

mkdir -p "$SYSROOT_PATH"
cp -fr "$NDK_PLATTFORM_PATH"/* $SYSROOT_PATH

cd "$SRC_PATH/build"

./configure $CONFIG CFLAGS="$CFLAGS" CXXFLAGS="$CXXFLAGS" LDFLAGS="$LDFLAGS"

make
make install