[android-porting] How can I build submodules of android source tree but do not download full android source code?

[ZhiHao Zhu]

Hi!
I just desire.
If I just want rebuild bionic, *but I do not want down full android source
code**, I tend to just clone Bionic alone.*
Could I possible use android build system (platfrom/build
<https://android.googlesource.com/platform/build>) use lunch or other
tool(maybe) to build submodules like Binoic or system_core?
if we could, what is the approximate process,and what kind of work needs to
be prepared ?

[Glenn Kasten]

In general, the Android build dependencies are fairly complex
and difficult to document accurately because they change frequently.
You might be able to get the information you want by taking an existing
working
build with full source code, and analyzing the internal generated files
that describe
the dependencies. Then you could reverse-engineer the dependencies from
that working build
and look for only the ones needed for bionic and then re-download just
those modules.
However, even if that approach worked, you would need to have full sources
to begin with. :-(
There may be other approaches that don't require full source, but I'm not
familiar with them.

Post by ZhiHao Zhu
Hi!
I just desire.
If I just want rebuild bionic, *but I do not want down full android
source code**, I tend to just clone Bionic alone.*
Could I possible use android build system (platfrom/build
<https://android.googlesource.com/platform/build>) use lunch or other
tool(maybe) to build submodules like Binoic or system_core?
if we could, what is the approximate process,and what kind of work needs
to be prepared ?