#! /bin/sh

if [ `id -u` != "0" ]; then
    echo "This program must be run as root."
    exit 1
fi

dir=/usr/libexec/gdb/symfiles
gdb=/usr/bin/gdb

echo -n "Removing current cache ... "
rm -rf "$dir"
mkdir -p "$dir"
echo "done"

echo -n "Finding libraries ... "

libs="/usr/lib/dyld"

for i in \
    /System/Library/Frameworks/*.framework \
    /System/Library/PrivateFrameworks/*.framework \
    /System/Library/Frameworks/*.framework/Frameworks/*.framework \
    /System/Library/PrivateFrameworks/*.framework/Frameworks/*.framework \
    ; do
    name=`basename $i .framework`
    # FIXME: the first run of nm is to check that the file is a valid Mach-O file.  That's okay.
    # The second is because gdb crashes when there are types in the cached symfile (Radar 3418798).
    # So for now we just leave out all libraries that have any stabs.
    if [ -f $i/$name ]; then
        if nm "$i/$name" >/dev/null 2>&1 && ! nm -ap "$i/$name" | grep 'SO ' >/dev/null 2>&1
        then
	  libs="$libs $i/$name"
        fi
    fi
done 

for i in \
    `find /usr/lib -name lib\*.dylib -type f` \
    /System/Library/Frameworks/*.framework/Libraries/*.dylib \
    ; do
    # FIXME: see fixme above.
    if nm "$i" >/dev/null 2>&1  && ! nm -ap "$i" | grep 'SO ' >/dev/null 2>&1
    then
      libs="$libs $i"
    fi
done 

echo "done"

for i in $libs; do
    if [ `basename $i` = "dyld" ]; then
       echo "sharedlibrary cache-symfile $i $dir __dyld_" >> /tmp/syms_$$.gdb
    else
       echo "sharedlibrary cache-symfile $i $dir" >> /tmp/syms_$$.gdb
    fi
done

echo -n "Processing libraries ... "
$gdb -nx --batch --command=/tmp/syms_$$.gdb
echo "done"

rm "/tmp/syms_$$.gdb"