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#!/bin/bash -eu
#
# Copyright 2017 Google Inc. All rights reserved.
#
# 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.
# To track how long we took to startup. %N isn't supported on Darwin, but
# that's detected in the Go code, and skip calculating the startup time.
export TRACE_BEGIN_SOONG=$(date +%s%N)
# Function to find top of the source tree (if $TOP isn't set) by walking up the
# tree.
function gettop
{
local TOPFILE=build/soong/root.bp
if [ -z "${TOP-}" -a -f "${TOP-}/${TOPFILE}" ] ; then
# The following circumlocution ensures we remove symlinks from TOP.
(cd $TOP; PWD= /bin/pwd)
else
if [ -f $TOPFILE ] ; then
# The following circumlocution (repeated below as well) ensures
# that we record the true directory name and not one that is
# faked up with symlink names.
PWD= /bin/pwd
else
local HERE=$PWD
T=
while [ \( ! \( -f $TOPFILE \) \) -a \( $PWD != "/" \) ]; do
\cd ..
T=`PWD= /bin/pwd -P`
done
\cd $HERE
if [ -f "$T/$TOPFILE" ]; then
echo $T
fi
fi
fi
}
# Bootstrap microfactory from source if necessary and use it to build the
# soong_ui binary, then run soong_ui.
function run_go
{
# Increment when microfactory changes enough that it cannot rebuild itself.
# For example, if we use a new command line argument that doesn't work on older versions.
local mf_version=2
local mf_src="${TOP}/build/soong/cmd/microfactory"
local out_dir="${OUT_DIR:-${TOP}/out}"
local mf_bin="${out_dir}/microfactory_$(uname)"
local mf_version_file="${out_dir}/.microfactory_$(uname)_version"
local soong_ui_bin="${out_dir}/soong_ui"
local from_src=1
if [ -f "${mf_bin}" ] && [ -f "${mf_version_file}" ]; then
if [ "${mf_version}" -eq "$(cat "${mf_version_file}")" ]; then
from_src=0
fi
fi
local mf_cmd
if [ $from_src -eq 1 ]; then
mf_cmd="${GOROOT}/bin/go run ${mf_src}/microfactory.go"
else
mf_cmd="${mf_bin}"
fi
${mf_cmd} -s "${mf_src}" -b "${mf_bin}" \
-pkg-path "android/soong=${TOP}/build/soong" -trimpath "${TOP}/build/soong" \
-o "${soong_ui_bin}" android/soong/cmd/soong_ui
if [ $from_src -eq 1 ]; then
echo "${mf_version}" >"${mf_version_file}"
fi
exec "${out_dir}/soong_ui" "$@"
}
export TOP=$(gettop)
case $(uname) in
Linux)
export GOROOT="${TOP}/prebuilts/go/linux-x86/"
;;
Darwin)
export GOROOT="${TOP}/prebuilts/go/darwin-x86/"
;;
*) echo "unknown OS:" $(uname) >&2 && exit 1;;
esac
run_go "$@"
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