Binary patcher for linux Qt builds to relocate hard-coded paths to library install location

RelinkQt.sh

#!/bin/sh

if [ x"$VERBOSE" = x"1" ]; then
    set -x
fi

SCRIPT=$(readlink -f $0)
SCRIPTPATH=$(dirname $SCRIPT)
cd $SCRIPTPATH/..

TMP_FILE=/tmp/qt_new_path

if [ x"$1" = "x" ]; then
    QT_PREFIX=`pwd`
else
    QT_PREFIX="$1"
fi

echo -n "$QT_PREFIX" > $TMP_FILE
dd if=/dev/zero of=$TMP_FILE bs=128 count=1 oflag=append conv=notrunc status=none

MARKERS="qt_prfxpath qt_epfxpath qt_hpfxpath"
FILES="bin/qmake lib/libQt5Core.so"

for BIN_FILE in $FILES; do
    OFFSETS=""
    for keyword in $MARKERS; do
        OFFSET=$(strings -t d $BIN_FILE |grep $keyword|cut -d ' ' -f 1)
        if [ x"$OFFSET" = "x" ]; then
            continue
        fi

        OFFSET=$(($OFFSET+12))
        #echo "New offset:" $OFFSET
        OFFSETS="$OFFSETS $OFFSET"
    done

    for OFFSET in $OFFSETS; do
        echo "Patch file $BIN_FILE at offset $OFFSET"
        dd if=$TMP_FILE bs=1 of=$BIN_FILE seek=$OFFSET conv=notrunc status=none
    done
done