#!/bin/bash set -e TMPDIR=/tmpBUILDDIR=/Retro68-build if [[ $INTERFACES == "universal" ]];then    # If the universal RIncludes directory is empty, download and install the universal headers    if [ ! "$(ls -A $BUILDDIR/toolchain/universal/RIncludes 2> /dev/null)" ]; then        # If INTERFACESFILE is empty, exit        if [[ -z $INTERFACESFILE ]];        then            echo -n "Universal interfaces not present, please specify the location of a suitable "            echo "MacBinary DiskCopy image using the INTERFACESFILE environment variable."            exit 1        fi         BASEINTERFACESFILE=`basename $INTERFACESFILE`         # If INTERFACESFILE is a URL, download it first to TMPDIR. Otherwise assume the file is        # already present and copy it to TMPDIR for installation        if [[ $INTERFACESFILE == http* ]];        then            echo "Downloading Universal interfaces from MacBinary DiskCopy image $BASEINTERFACESFILE..."            curl -s $INTERFACESFILE -o $TMPDIR/$BASEINTERFACESFILE            echo "done"        else            if [[ -z $INTERFACESFILE ]];            then                echo "Unable to locate universal interfaces file $INTERFACESFILE"                exit 1            else                echo "Using Universal intefaces from MacBinary Diskcopy image $BASEINTERFACESFILE"                cp $INTERFACESFILE $TMPDIR/$BASEINTERFACESFILE            fi        fi         # Extract the file        $BUILDDIR/bin/install-universal-interfaces.sh $TMPDIR $BASEINTERFACESFILE         # Switch to universal        echo "Linking Universal interfaces..."        $BUILDDIR/bin/interfaces-and-libraries.sh $BUILDDIR/toolchain $TMPDIR/InterfacesAndLibraries        echo "done"    else        echo "Linking Universal interfaces..."         # Link to existing universal interfaces        PREFIX=$BUILDDIR/toolchain        . "$BUILDDIR/bin/interfaces-and-libraries.sh"        BUILD_68K=true        BUILD_PPC=true         unlinkInterfacesAndLibraries        linkInterfacesAndLibraries "universal"        echo "done"    fielse    echo "Using multiversal interfaces"fi # Execute commandexec "$@"