1 #!/bin/bash -eu 2 # 3 # Copyright 2017 Google Inc. All rights reserved. 4 # 5 # Licensed under the Apache License, Version 2.0 (the "License"); 6 # you may not use this file except in compliance with the License. 7 # You may obtain a copy of the License at 8 # 9 # http://www.apache.org/licenses/LICENSE-2.0 10 # 11 # Unless required by applicable law or agreed to in writing, software 12 # distributed under the License is distributed on an "AS IS" BASIS, 13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 # See the License for the specific language governing permissions and 15 # limitations under the License. 16 17 # To track how long we took to startup. %N isn't supported on Darwin, but 18 # that's detected in the Go code, and skip calculating the startup time. 19 export TRACE_BEGIN_SOONG=$(date +%s%N) 20 21 # Function to find top of the source tree (if $TOP isn't set) by walking up the 22 # tree. 23 function gettop 24 { 25 local TOPFILE=build/soong/root.bp 26 if [ -z "${TOP-}" -a -f "${TOP-}/${TOPFILE}" ] ; then 27 # The following circumlocution ensures we remove symlinks from TOP. 28 (cd $TOP; PWD= /bin/pwd) 29 else 30 if [ -f $TOPFILE ] ; then 31 # The following circumlocution (repeated below as well) ensures 32 # that we record the true directory name and not one that is 33 # faked up with symlink names. 34 PWD= /bin/pwd 35 else 36 local HERE=$PWD 37 T= 38 while [ \( ! \( -f $TOPFILE \) \) -a \( $PWD != "/" \) ]; do 39 \cd .. 40 T=`PWD= /bin/pwd -P` 41 done 42 \cd $HERE 43 if [ -f "$T/$TOPFILE" ]; then 44 echo $T 45 fi 46 fi 47 fi 48 } 49 50 # Bootstrap microfactory from source if necessary and use it to build the 51 # soong_ui binary, then run soong_ui. 52 function run_go 53 { 54 # Increment when microfactory changes enough that it cannot rebuild itself. 55 # For example, if we use a new command line argument that doesn't work on older versions. 56 local mf_version=2 57 58 local mf_src="${TOP}/build/soong/cmd/microfactory" 59 60 local out_dir="${OUT_DIR-}" 61 if [ -z "${out_dir}" ]; then 62 if [ "${OUT_DIR_COMMON_BASE-}" ]; then 63 out_dir="${OUT_DIR_COMMON_BASE}/$(basename ${TOP})" 64 else 65 out_dir="${TOP}/out" 66 fi 67 fi 68 69 local mf_bin="${out_dir}/microfactory_$(uname)" 70 local mf_version_file="${out_dir}/.microfactory_$(uname)_version" 71 local soong_ui_bin="${out_dir}/soong_ui" 72 local from_src=1 73 74 if [ -f "${mf_bin}" ] && [ -f "${mf_version_file}" ]; then 75 if [ "${mf_version}" -eq "$(cat "${mf_version_file}")" ]; then 76 from_src=0 77 fi 78 fi 79 80 local mf_cmd 81 if [ $from_src -eq 1 ]; then 82 mf_cmd="${GOROOT}/bin/go run ${mf_src}/microfactory.go" 83 else 84 mf_cmd="${mf_bin}" 85 fi 86 87 ${mf_cmd} -s "${mf_src}" -b "${mf_bin}" \ 88 -pkg-path "android/soong=${TOP}/build/soong" -trimpath "${TOP}/build/soong" \ 89 -o "${soong_ui_bin}" android/soong/cmd/soong_ui 90 91 if [ $from_src -eq 1 ]; then 92 echo "${mf_version}" >"${mf_version_file}" 93 fi 94 95 exec "${out_dir}/soong_ui" "$@" 96 } 97 98 export TOP=$(gettop) 99 case $(uname) in 100 Linux) 101 export GOROOT="${TOP}/prebuilts/go/linux-x86/" 102 ;; 103 Darwin) 104 export GOROOT="${TOP}/prebuilts/go/darwin-x86/" 105 ;; 106 *) echo "unknown OS:" $(uname) >&2 && exit 1;; 107 esac 108 109 run_go "$@" 110
