patmos-chrpath

#!/bin/bash
###############################################################################
#
# rpath update script for the Patmos compiler tool chain build scripts.
#
# Authors:
# Stefan Hepp <hepp@complang.tuwien.ac.at>
#
###############################################################################

function abspath() {
    local path=$1
    local pwd_restore="$(pwd)"

    # readlink -f does not work on OSX, so we do this manually
    cd $(dirname "$path")
    path=$(basename "$path")
    # follow chain of symlinks
    while [ -L "$path" ]; do
        path=$(readlink "$path")
        cd $(dirname "$path")
        path=$(basename "$path")
    done
    echo "$(pwd -P)/$path"
    cd "$pwd_restore"
}


OS_NAME=$(uname -s)

# physical location of this script, and the config
self=$(abspath $0)
CFGFILE=$(dirname $self)/build.cfg

########################################################################

# Root directory for all repositories
ROOT_DIR=$(pwd)

# Set to 'short' for llvm/clang/... directory names, 'long' for
# patmos-llvm/patmos-clang/.. or 'prefix' to use $(REPO_PREFIX)llvm/..
REPO_NAMES=short
REPO_PREFIX=

# Installation directory prefix
INSTALL_DIR="$ROOT_DIR/local"


########################################################################

VERBOSE=false
WARN=false
DELETE=false
PACKAGE=
BINARY=

# user config
if [ -f $CFGFILE ]; then
  source $CFGFILE
fi


function usage() {
  cat <<EOT
Usage: $0 [<options>] [-p <reponame> | -b <binary>] [-i <installdir>] [<new_rpath>]

  Update the rpath of the installed Patmos binaries.
   -h      Show this help.
   -d      Delete the rpath instead of updating it.
   -v      Be verbose.
   -w      Warn only if chrpath is not found.
   -p      Update binaries from the given Patmos package ('llvm','patmos')
   -b      Update the given binary only.

  The default installdir will be taken from build.cfg if not given.
  The new rpath will be <installdir>/lib if not set.

EOT
    exit 0
}

function update_binary() {
    local binary=$1

    if [ "$DELETE" == "true" ]; then
	if [ "$VERBOSE" == "true" ]; then
	    echo "$CHRPATH -d $binary"
	fi
	$CHRPATH -d $binary >/dev/null
    else
	if [ "$VERBOSE" == "true" ]; then
	    echo "$CHRPATH -r $RPATH $binary"
	fi
	$CHRPATH -r $RPATH $binary >/dev/null 
    fi
}

function update_llvm() {
    bindir=$INSTALL_DIR/bin

    for file in $bindir/patmos-*; do 
	case $file in
	    *patmos*-llvm-lit|*patmos*-ld|*patmos*-ar|*patmos*-ld.gold|*patmos*-clang-wcet) ;;
	    *patmos*-difftest|*patmos*-sorttimes) ;;
	    *) 
	       update_binary $file
	       ;;
	esac
    done
}

# one-shot config
while getopts ":hi:dvp:b:wx" opt; do
  case $opt in
    h) usage; exit 0 ;;
    i) INSTALL_DIR="$(abspath $OPTARG)" ;;
    d) DELETE=true ;;
    v) VERBOSE=true ;;
    p) PACKAGE=$OPTARG ;;
    b) BINARY=$OPTARG ;;
    w) WARN=true ;;
    x) set -x ;;
    \?)
      echo "Invalid option: -$OPTARG" >&2
      usage >&2
      exit 1
      ;;
    :)
      echo "Option -$OPTARG requires an argument." >&2
      usage >&2
      exit 1
      ;;
  esac
done
shift $((OPTIND-1))

RPATH=$1
if [ -z $RPATH ]; then
    RPATH="$INSTALL_DIR/lib"
fi

CHRPATH=$(which chrpath)
if [ $? != 0 -o ! -x "$CHRPATH" ]; then
    if [ "$WARN" == "true" ]; then
	echo "** Warning: chrpath not found, skipping."
	exit 0
    else
	echo "** Error: chrpath not found, exiting."
	exit 2
    fi
fi

if [ ! -z $BINARY ]; then
    update_binary $BINARY
elif [ -z $PACKAGE ]; then 
    update_llvm
elif [ "$PACKAGE" == "llvm" ]; then
    update_llvm
else
    echo "Unsupported package name: $PACKAGE."
    exit 2
fi