Strip Mantle Script

RemoveMantleFromSnapsheet.sh

#!/bin/sh

#HOW TO USE 
# Get architectures with 
#   $ lipo -info SnapsheetSDK

# Run the script in the same dir as the binary (binary name in this case is SnapsheetSDK)
# Run script with archs are parameters 
#   $ ./strip_symbols.sh SnapsheetSDK armv7 armv7s i386 x86_64 arm64

# To check if everything works you can search for MTL (the stripped on should not contain any method definitions 
#   $ nm SnapsheetSDK | grep MTL
#   $ nm SnapsheetSDK-mantleStripped | grep MTL


#path to the sdk you want to strip symbols from
SDK="$1"

#ignore first parameter
shift

ARCHS=""

#loop over each architecture within this sdk
for arch in "$@"
do
    echo "$arch"
    echo
    lipo -thin "$arch" "$SDK" -output "$SDK"-"$arch"
    mkdir "$SDK-$arch-extracted"
    cd "$SDK-$arch-extracted"
    ar -x "../$SDK-$arch"

    #remove the symbol files you want from this architecture
    rm MTLJSONAdapter.o
    rm MTLManagedObjectAdapter.o
    rm MTLModel+NSCoding.o
    rm MTLModel.o
    rm MTLReflection.o
    rm MTLValueTransformer.o
    rm NSArray+MTLManipulationAdditions.o
    rm NSDictionary+MTLManipulationAdditions.o
    rm NSError+MTLModelException.o
    rm NSObject+MTLComparisonAdditions.o
    rm NSValueTransformer+MTLInversionAdditions.o
    rm NSValueTransformer+MTLPredefinedTransformerAdditions.o

    #recompile the symbol files into the architecture binary file
    libtool  -static *.o -o "../$SDK-$arch"

    #add to the array of architecture names
    ARCHS="$ARCHS $SDK-$arch"

    cd ..
    rm -rf $SDK-$arch-extracted
    echo $ARCHS
done

echo "Creating Stripped binary"
#re-compile the extracted fat binary
lipo -create $ARCHS -o "$SDK-mantleStripped"

#remove unused binaries
for arch in "$@"
do
    rm $SDK-$arch
done