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<!--
Copyright 2010 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
# Known Issues #
Even with our best care, small problems sometimes slip in. This page keeps
track of the known issues around using the Android source code.
## Missing CTS Native XML Generator ##
**Symptom**: On some builds of IceCreamSandwich and later, the following
warning is printed early during the build:
`/bin/bash: line 0: cd: cts/tools/cts-native-xml-generator/src/res: No
such file or directory`
**Cause**: Some makefile references that path, which doesn't exist.
**Fix**: None. This is a harmless warning.
## Black Gingerbread Emulator ##
**Symptom**: The emulator built directly from the gingerbread branch
doesn't start and stays stuck on a black screen.
**Cause**: The gingerbread branch uses version R7 of the emulator,
which doesn't have all the features necessary to run recent versions
of gingerbread.
**Fix**: Use version R12 of the emulator, and a newer kernel that matches
those tools. No need to do a clean build.
$ repo forall platform/external/qemu -c git checkout aosp/tools_r12
$ make
$ emulator -kernel prebuilt/android-arm/kernel/kernel-qemu-armv7
## Emulator built on MacOS 10.7 Lion doesn't work. ##
**Symptom**: The emulator (any version) built on MacOS 10.7 Lion
and/or on XCode 4.x doesn't start.
**Cause**: Some change in the development environment causes
the emulator to be compiled in a way that prevents it from working.
**Fix**: Use an emulator binary from the SDK, which is built on
MacOS 10.6 with XCode 3 and works on MacOS 10.7.
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