1 #!/bin/bash 2 3 # This script serves two purposes. First, it can bootstrap the standalone 4 # Blueprint to generate the minibp binary. To do this simply run the script 5 # with no arguments from the desired build directory. 6 # 7 # It can also be invoked from another script to bootstrap a custom Blueprint- 8 # based build system. To do this, the invoking script must first set some or 9 # all of the following environment variables, which are documented below where 10 # their default values are set: 11 # 12 # BOOTSTRAP 13 # WRAPPER 14 # SRCDIR 15 # BUILDDIR 16 # BOOTSTRAP_MANIFEST 17 # GOROOT 18 # GOOS 19 # GOARCH 20 # GOCHAR 21 # 22 # The invoking script should then run this script, passing along all of its 23 # command line arguments. 24 25 set -e 26 27 EXTRA_ARGS="" 28 29 # BOOTSTRAP should be set to the path of the bootstrap script. It can be 30 # either an absolute path or one relative to the build directory (which of 31 # these is used should probably match what's used for SRCDIR). 32 if [ -z "$BOOTSTRAP" ]; then 33 BOOTSTRAP="${BASH_SOURCE[0]}" 34 35 # WRAPPER should only be set if you want a ninja wrapper script to be 36 # installed into the builddir. It is set to blueprint's blueprint.bash 37 # only if BOOTSTRAP and WRAPPER are unset. 38 [ -z "$WRAPPER" ] && WRAPPER="`dirname "${BOOTSTRAP}"`/blueprint.bash" 39 fi 40 41 # SRCDIR should be set to the path of the root source directory. It can be 42 # either an absolute path or a path relative to the build directory. Whether 43 # its an absolute or relative path determines whether the build directory can 44 # be moved relative to or along with the source directory without re-running 45 # the bootstrap script. 46 [ -z "$SRCDIR" ] && SRCDIR=`dirname "${BOOTSTRAP}"` 47 48 # BUILDDIR should be set to the path to store build results. By default, this 49 # is the current directory, but it may be set to an absolute or relative path. 50 [ -z "$BUILDDIR" ] && BUILDDIR=. 51 52 # TOPNAME should be set to the name of the top-level Blueprints file 53 [ -z "$TOPNAME" ] && TOPNAME="Blueprints" 54 55 # BOOTSTRAP_MANIFEST is the path to the bootstrap Ninja file that is part of 56 # the source tree. It is used to bootstrap a build output directory from when 57 # the script is run manually by a user. 58 [ -z "$BOOTSTRAP_MANIFEST" ] && BOOTSTRAP_MANIFEST="${SRCDIR}/build.ninja.in" 59 60 # These variables should be set by auto-detecting or knowing a priori the host 61 # Go toolchain properties. 62 [ -z "$GOROOT" ] && GOROOT=`go env GOROOT` 63 [ -z "$GOOS" ] && GOOS=`go env GOHOSTOS` 64 [ -z "$GOARCH" ] && GOARCH=`go env GOHOSTARCH` 65 [ -z "$GOCHAR" ] && GOCHAR=`go env GOCHAR` 66 67 # If RUN_TESTS is set, behave like -t was passed in as an option. 68 [ ! -z "$RUN_TESTS" ] && EXTRA_ARGS="$EXTRA_ARGS -t" 69 70 GOTOOLDIR="$GOROOT/pkg/tool/${GOOS}_$GOARCH" 71 GOCOMPILE="$GOTOOLDIR/${GOCHAR}g" 72 GOLINK="$GOTOOLDIR/${GOCHAR}l" 73 74 if [ ! -f $GOCOMPILE ]; then 75 GOCOMPILE="$GOTOOLDIR/compile" 76 fi 77 if [ ! -f $GOLINK ]; then 78 GOLINK="$GOTOOLDIR/link" 79 fi 80 if [[ ! -f $GOCOMPILE || ! -f $GOLINK ]]; then 81 echo "Cannot find go tools under $GOROOT" 82 exit 1 83 fi 84 85 usage() { 86 echo "Usage of ${BOOTSTRAP}:" 87 echo " -h: print a help message and exit" 88 echo " -r: regenerate ${BOOTSTRAP_MANIFEST}" 89 echo " -t: include tests when regenerating manifest" 90 } 91 92 # Parse the command line flags. 93 IN="$BOOTSTRAP_MANIFEST" 94 REGEN_BOOTSTRAP_MANIFEST=false 95 while getopts ":b:hi:rt" opt; do 96 case $opt in 97 b) BUILDDIR="$OPTARG";; 98 h) 99 usage 100 exit 1 101 ;; 102 i) IN="$OPTARG";; 103 r) REGEN_BOOTSTRAP_MANIFEST=true;; 104 t) EXTRA_ARGS="$EXTRA_ARGS -t";; 105 \?) 106 echo "Invalid option: -$OPTARG" >&2 107 usage 108 exit 1 109 ;; 110 :) 111 echo "Option -$OPTARG requires an argument." >&2 112 exit 1 113 ;; 114 esac 115 done 116 117 if [ $REGEN_BOOTSTRAP_MANIFEST = true ]; then 118 # This assumes that the script is being run from a build output directory 119 # that has been built in the past. 120 if [ -x $BUILDDIR/.bootstrap/bin/minibp ]; then 121 echo "Regenerating $BOOTSTRAP_MANIFEST" 122 $BUILDDIR/.bootstrap/bin/minibp $EXTRA_ARGS -o $BOOTSTRAP_MANIFEST $SRCDIR/$TOPNAME 123 else 124 echo "Executable minibp not found at $BUILDDIR/.bootstrap/bin/minibp" >&2 125 exit 1 126 fi 127 fi 128 129 mkdir -p $BUILDDIR/.minibootstrap 130 131 sed -e "s|@@SrcDir@@|$SRCDIR|g" \ 132 -e "s|@@BuildDir@@|$BUILDDIR|g" \ 133 -e "s|@@GoRoot@@|$GOROOT|g" \ 134 -e "s|@@GoCompile@@|$GOCOMPILE|g" \ 135 -e "s|@@GoLink@@|$GOLINK|g" \ 136 -e "s|@@Bootstrap@@|$BOOTSTRAP|g" \ 137 -e "s|@@BootstrapManifest@@|$BOOTSTRAP_MANIFEST|g" \ 138 $IN > $BUILDDIR/.minibootstrap/build.ninja 139 140 echo "BOOTSTRAP=\"${BOOTSTRAP}\"" > $BUILDDIR/.blueprint.bootstrap 141 echo "BOOTSTRAP_MANIFEST=\"${BOOTSTRAP_MANIFEST}\"" >> $BUILDDIR/.blueprint.bootstrap 142 143 if [ ! -z "$WRAPPER" ]; then 144 cp $WRAPPER $BUILDDIR/ 145 fi 146
