Merge "Add more details to divergent vndk lib error." am: e9bceb66 am: d90ae697

strip_lib ${CORE} ${stripped_core}

strip_lib ${VENDOR} ${stripped_vendor}

if ! cmp -s ${stripped_core} ${stripped_vendor}; then

  echo "VNDK library not in vndkMustUseVendorVariantList but has different core and vendor variant: $(basename ${CORE})"

  echo "If the two variants need to have different runtime behavior, consider using libvndksupport."

  echo "ERROR: VNDK library $(basename ${CORE%.so}) has different core and" \

    "vendor variants! This means that the copy used in the system.img/etc" \

    "and vendor.img/etc images are different. In order to preserve space on" \

    "some devices, it is helpful if they are the same. Frequently, " \

    "libraries are different because they or their dependencies compile" \

    "things based on the macro '__ANDROID_VNDK__' or they specify custom" \

    "options under 'target: { vendor: { ... } }'. Here are some possible" \

    "resolutions:"

  echo "ERROR: 1). Remove differences, possibly using the libvndksupport" \

    "function android_is_in_vendor_process in order to turn this into a" \

    "runtime difference."

  echo "ERROR: 2). Add the library to the VndkMustUseVendorVariantList" \

    "variable in build/soong/cc/config/vndk.go, which is used to" \

    "acknowledge this difference."

  exit 1

fi