Re: [gentoo-soc] Weekly Report: Portage Powered Android

[UnderSampled <undersampled@live.com>]

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Where is the IRC logged? I generally only catch up on my phone, and haven't been able to check the IRC after the Gitter bridge failed.

Stephen

On July 1, 2020 12:53:54 PM EDT, Gunwant Jain <therealgunwant@gmail.com> wrote:
>Thanks for your comments Pengcheng.
>
>On 20/07/01 10:07PM, Pengcheng Xu wrote:
>> It's good that you chose to get familiar with the GNU build system
>(autotools); it will save you large amounts of time when meddling with
>toolchain-related work.  I would also suggest taking a look at the "GNU
>Hello" project; it serves as a genuine example of the basics for a GNU
>project, which GCC is as well.  Get familiar with how to read the
>configuration and compilation logs, especially when they're littered
>with libtool calls instead of directly calling the compiler.
>
>Thanks for the tip, I will definitely look into it.
>
>> > But while building the toolchain, I was not able to compile `gcc`
>as
>> > I was riddled with errors along the way. Most of them are related
>to the
>> > newer `gcc` (version 9.x) finding incompatibility in the sources of
>the
>> > `gcc` I am trying to build (version 4.9).
>> > I will continue to build the toolchain and hopefully move onto
>> > separating `Bionic` from the other side of Android mid-week.
>> 
>> Just as Benda pointed out, 4.9 may be the one I chose two years ago,
>but it's not a hard requirement: most Android things should compile
>fine with any newer versions of GCC as long as the toolchain is
>correctly configured for an Android target; in many occasions even
>Clang works perfectly fine.  You may try to fix the problems in the 4.9
>tree, tweak the options for the "build" compiler (gcc-9) to accept
>older, non-compliant sources, or try to find a newer version of GCC
>source tree with Android (i.e. Bionic) support.  You may have better
>luck looking for such a source tree in the AOSP codebase.
>
>I agree, and I just realised that even though NDK requires gcc-4.9, 
>Android 8.0 and above uses Clang for compilation. This differs from my
>days of compiling custom ROMs (pre Android 8). I am sorry for the
>confusion created with gcc, I should have known better.
>
>Let me switch to building a clang based toolchain now onwards. 
>
>> And, we'd love to see a link to your weekly writeup of your efforts
>and problems encountered in greater detail.  We can find out more about
>your progress and perhaps provide assistance if we can see the exact
>problem; for example, it would be helpful if you quoted or linked to
>the exact error message in the gcc build process you just mentioned. 
>It's also a good idea to keep these in track for archival purposes,
>such that future contributors can have an idea of what's going on if
>they run into the same problem.
>
>I wasn't planning on keeping the logs of errors I face, but since it is
>requested, I will provide them in a new segment of "weekly blogs" now 
>onwards (keeping in mind that I have switched to using clang based 
>toolchains). Furthermore, I will be actively indicating the errors in 
>the IRC chatroom, which is logged as well.
>
>Please let me know if you have more comments.
>
>Regards,
>Gunwant

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.

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