#!/bin/sh
#
# Copyright (C) 2010 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# This script is used to build an NDK release package *from* scratch !!
# While handy, this is *not* the best way to generate NDK release packages.
# See docs/DEVELOPMENT.TXT for details.
#

. `dirname $0`/prebuilt-common.sh

force_32bit_binaries

# The default release name (use today's date)
RELEASE=`date +%Y%m%d`
register_var_option "--release=<name>" RELEASE "Specify release name"

# The package prefix
PREFIX=android-ndk
register_var_option "--prefix=<name>" PREFIX "Specify package prefix"

# Find the location of the platforms root directory
DEVELOPMENT_ROOT=`dirname $ANDROID_NDK_ROOT`/development/ndk
register_var_option "--development=<path>" DEVELOPMENT_ROOT "Path to development/ndk directory"

# Force the build
FORCE=no
register_var_option "--force" FORCE "Force build (do not ask initial question)"

# Determine the host platforms we can build for.
# This is the current host platform, and eventually windows if
# we are on Linux and have the mingw32 compiler installed and
# in our path.
#
HOST_SYSTEMS="$HOST_TAG"

MINGW_GCC=
if [ "$HOST_TAG" == "linux-x86" ] ; then
    find_program MINGW_GCC i586-mingw32msvc-gcc
    if [ -n "$MINGW_GCC" ] ; then
        HOST_SYSTEMS="$HOST_SYSTEMS windows"
    fi
fi
register_var_option "--systems=<list>" HOST_SYSTEMS "List of host systems to build for"

TOOLCHAIN_SRCDIR=
register_var_option "--toolchain-src-dir=<path>" TOOLCHAIN_SRCDIR "Use toolchain sources from <path>"

extract_parameters "$@"

# Print a warning and ask the user if he really wants to do that !
#
if [ "$FORCE" = "no" ] ; then
    echo "IMPORTANT WARNING !!"
    echo ""
    echo "This script is used to generate an NDK release package from scratch"
    echo "for the following host platforms: $HOST_SYSTEMS"
    echo ""
    echo "This process is EXTREMELY LONG and may take SEVERAL HOURS on a dual-core"
    echo "machine. If you plan to do that often, please read docs/DEVELOPMENT.TXT"
    echo "that provides instructions on how to do that more easily."
    echo ""
    echo "Are you sure you want to do that [y/N] "
    read YESNO
    case "$YESNO" in
        y|Y|yes|YES)
            ;;
        *)
            echo "Aborting !"
            exit 0
    esac
fi

PROGRAM_PARAMETERS=
PROGRAM_DESCRIPTION=\
"This script is used to generate an NDK release package from scratch.

This process is EXTREMELY LONG and consists in the following steps:

  - downloading toolchain sources from the Internet
  - patching them appropriately (if needed)
  - rebuilding the toolchain binaries for the host system
  - rebuilding the platforms and samples directories from ../development/ndk
  - packaging everything into a host-specific archive

This can take several hours on a dual-core machine, even assuming a very
nice Internet connection and plenty of RAM and disk space.

Note that on Linux, if you have the 'mingw32' package installed, the script
will also automatically generate a windows release package. You can prevent
that by using the --platforms option.

IMPORTANT:
        If you intend to package NDK releases often, please read the
        file named docs/DEVELOPMENT.TXT which provides ways to do that
        more quickly, by preparing toolchain binary tarballs that can be
        reused for each package operation. This will save you hours of
        your time compared to using this script!
"

# Create directory where everything will be performed.
RELEASE_DIR=/tmp/ndk-release
rm -rf $RELEASE_DIR && mkdir -p $RELEASE_DIR

# Step 1, If needed, download toolchain sources into a temporary directory
if [ -n "$TOOLCHAIN_SRCDIR" ] ; then
    dump "Using toolchain source directory: $TOOLCHAIN_SRCDIR"
else
    dump "Downloading toolchain sources..."
    TOOLCHAIN_SRCDIR="$RELEASE_DIR/toolchain-src"
    log "Using toolchain source directory: $TOOLCHAIN_SRCDIR"
    $ANDROID_NDK_ROOT/build/tools/download-toolchain-sources.sh "$TOOLCHAIN_SRCDIR"
fi

# Step 2, build the host toolchain binaries and package them
PREBUILT_DIR="$RELEASE_DIR/prebuilt-$RELEASE"
dump "Building host toolchain binaries..."
$ANDROID_NDK_ROOT/build/tools/rebuild-all-prebuilt.sh --toolchain-src-dir="$TOOLCHAIN_SRCDIR" --package-dir="$PREBUILT_DIR"
if [ -n "$MINGW_GCC" ] ; then
    dump "Building windows toolchain binaries..."
    $ANDROID_NDK_ROOT/build/tools/rebuild-all-prebuilt.sh --toolchain-src-dir="$TOOLCHAIN_SRCDIR" --package-dir="$PREBUILT_DIR" --mingw
fi

# Step 3, package a release with everything
dump "Generating NDK release packages"
$ANDROID_NDK_ROOT/build/tools/package-release.sh --release=$RELEASE --prefix=$PREFIX --prebuilt-dir="$PREBUILT_DIR" --systems="'$SYSTEMS'" --development-root="$DEVELOPMENT_ROOT"