#!/bin/sh

QMKSPEC=$1

VERBOSE=$2

SRCDIR=$3

OUTDIR=$4

# debuggery

[ "$VERBOSE" = "yes" ] && echo "Determining machine byte-order... ($*)"

# build and run a test program

test -d "$OUTDIR/config.tests/unix/endian" || mkdir -p "$OUTDIR/config.tests/unix/endian"

"$OUTDIR/bin/qmake" -nocache -spec "$QMKSPEC" "$SRCDIR/config.tests/unix/endian/endiantest.pro" -o "$OUTDIR/config.tests/unix/endian/Makefile" >/dev/null 2>&1

cd "$OUTDIR/config.tests/unix/endian"

ENDIAN="UNKNOWN"

[ "$VERBOSE" = "yes" ] && $MAKE || $MAKE >/dev/null 2>&1

if [ -f ./endiantest.exe ]; then

    binary=./endiantest.exe

else

    binary=./endiantest

fi

if [ -f $binary ]; then

    : # nop

else

    [ "$VERBOSE" = "yes" ] && echo "Unknown byte order!"

    exit 2

fi

if strings $binary | grep LeastSignificantByteFirst >/dev/null 2>&1; then

    [ "$VERBOSE" = "yes" ] && echo "    Found 'LeastSignificantByteFirst' in binary"

    ENDIAN="LITTLE"

elif strings $binary | grep MostSignificantByteFirst >/dev/null 2>&1; then

    [ "$VERBOSE" = "yes" ] && echo "    Found 'MostSignificantByteFirst' in binary"

    ENDIAN="BIG"

fi

# make clean as this tests is compiled for both the host and the target

$MAKE distclean

# done

if [ "$ENDIAN" = "LITTLE" ]; then

    [ "$VERBOSE" = "yes" ] && echo "Using little endian."

    exit 0

elif [ "$ENDIAN" = "BIG" ]; then

    [ "$VERBOSE" = "yes" ] && echo "Using big endian."

    exit 1

else

    [ "$VERBOSE" = "yes" ] && echo "Unknown byte order!"

    exit 2

fi