[Buildroot] Builroot - android ndk

[Buildroot] Builroot - android ndk

[Alvaro Denis]

Hello all,
In some point the documentation say:

"We do not support toolchains or SDK generated by OpenEmbedded or Yocto,
because these toolchains are not pure toolchains (i.e. just the compiler,
binutils, the C and C++ libraries). Instead these toolchains come with a
very large set of pre-compiled libraries and programs. Therefore, Buildroot
cannot import the *sysroot* of the toolchain, as it would contain hundreds
of megabytes of pre-compiled libraries that are normally built by Buildroot.
"

If I build the toolchain using make_standalone_toolchain.py
<https://developer.android.com/ndk/guides/standalone_toolchain.html>
it is a "pure toolchain"? it can be used in buildroot as preintstaled
toolchain?

Thanks in advance :)
<https://developer.android.com/ndk/guides/standalone_toolchain.html>




Ing. Alvaro Denis Acosta
[image: https://]about.me/denisacostaq
<https://about.me/denisacostaq?promo=email_sig&utm_source=email_sig&utm_medium=email_sig&utm_campaign=external_links>


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[Buildroot] Builroot - android ndk

[Thomas Petazzoni]

Hello,

On Sat, 15 Apr 2017 13:38:05 -0400, Alvaro Denis wrote:

> If I build the toolchain using make_standalone_toolchain.py
> <https://developer.android.com/ndk/guides/standalone_toolchain.html>
> it is a "pure toolchain"? it can be used in buildroot as preintstaled
> toolchain?

We have never tested Android toolchains, so I don't know. However, what
is sure is that those toolchains use the bionic C library, which we
don't support. And you most likely won't be able to build most of the
Linux applications against bionic, at  least not without some effort.

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

[Buildroot] Builroot - android ndk

[Peter Korsgaard]

>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni@free-electrons.com> writes:

 > Hello,
 > On Sat, 15 Apr 2017 13:38:05 -0400, Alvaro Denis wrote:

 >> If I build the toolchain using make_standalone_toolchain.py
 >> <https://developer.android.com/ndk/guides/standalone_toolchain.html>
 >> it is a "pure toolchain"? it can be used in buildroot as preintstaled
 >> toolchain?

 > We have never tested Android toolchains, so I don't know. However, what
 > is sure is that those toolchains use the bionic C library, which we
 > don't support. And you most likely won't be able to build most of the
 > Linux applications against bionic, at  least not without some effort.

But you can afaik combine a Buildroot rootfs (built against
glibc/musl/uclibc) with an android rootfs without much problems, as the
same paths aren't used. In the worst case you can do a static build.

-- 
Bye, Peter Korsgaard