#!/bin/sh

DWARF2_SUPPORT=no

DWARF2_SUPPORT_BROKEN=no

COMPILER=$1

VERBOSE=$2

WORKDIR=$3

touch dwarf2.c

if "$COMPILER" -c dwarf2.c -Werror -gdwarf-2 2>/dev/null 1>&2; then

    if "$COMPILER" -c dwarf2.c -Werror -gdwarf-2  2>&1 | grep "unsupported" >/dev/null ; then

        true

    else

        DWARF2_SUPPORT=yes

    fi

fi

rm -f dwarf2.c dwarf2.o

# Test for xcode 2.4.0, which has a broken implementation of DWARF

"$COMPILER" $WORKDIR/xcodeversion.cpp -o xcodeversion -framework Carbon;

./xcodeversion

if [ "$?" == "1" ]; then

    DWARF2_SUPPORT_BROKEN=yes

fi

rm xcodeversion

# done

if [ "$DWARF2_SUPPORT" != "yes" ]; then

    [ "$VERBOSE" = "yes" ] && echo "DWARF2 debug symbols disabled."

    exit 0

else

    if [ "$DWARF2_SUPPORT_BROKEN" == "yes" ]; then

        [ "$VERBOSE" = "yes" ] && echo "DWARF2 debug symbols disabled."

        exit 0

    else

        [ "$VERBOSE" = "yes" ] && echo "DWARF2 debug symbols enabled."

        exit 1

    fi

fi