src/source/known-issues.md

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# 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.

## Difficulties syncing the source code (proxy issues). ##

**Symptom**: `repo init` or `repo sync` fail with http errors,
typically 403 or 500.

**Cause**: There are quite a few possible causes, most often
related to http proxies, which have difficulties handling the
large amounts of data getting transfered.

**Fix**: While there's no general solution, using python 2.7
and explicitly using `repo sync -j1` have been reported to
improve the situation for some users.

## `make snod` and emulator builds. ##

**Symptom**: When using `make snod` (make system no dependencies)
on emulator builds, the resulting build doesn't work.

**Cause**: All emulator builds now run Dex optimization at build
time by default, which requires to follow all dependencies to
re-optimize the applications each time the framework changes.

**Fix**: Locally disable Dex optimizations with
`export WITH_DEXPREOPT=false`, delete the existing optimized
versions with `make installclean` and run a full build to
re-generate non-optimized versions. After that, `make snod`
will work.