[Arm-dev] Centos 7 - aarch64 gcc spec file bug

[Ed Brand]

SUCCESS!!!

What a PITA.  I did hit the glibc artifact issue, ended up building a 
complete cross-compiled gcc-4.9 toolchain for Centos7 x86_64. gcc-4.8 is 
just not happy being cross-compiled.

I did a write up and uploaded everything to the below link if you want 
to give it a go, or repeat for arm32 port. Basically followed the f21 
stage 1 port docs to get it bootstrapped.  I would like to see this in 
the main distro.   Do you need a bug filed?

http://arm.brandint.com/centos7/aarch64/bootstrap/Centos7-AARCH64-CrossCompiler.html 



Cheers

-Ed
















On 07/28/2016 08:38 PM, Jim Perrin wrote:
>
> On 07/28/2016 04:17 PM, Ed Brand wrote:
>> Libatomic and libgnat from gcc-4.8.5-4 appear not to be built on
>> aarch64. How to file bug?  See below from spec:
>>
> Bugs can be filed at bugs.centos.org
>
>> Summary: Various compilers (C, C++, Objective-C, Java, ...)
>> Name: gcc
>> %if 0%{?rhel} == 7
>> %global gcc_version 4.8.2
>> %else
>> %global gcc_version 4.8.5
>> %endif
>> Version: 4.8.5
>> Release: %{gcc_release}%{?dist}
>> ...
>> ( Missing aarch64 )
>> v
>> %ifarch %{ix86} x86_64 ppc ppc64 ppc64le ppc64p7 s390 s390x aarch64 %{arm}
>> %global build_libatomic 1
>>
>>
>> I did a smoke test and was able to bootstrap both using f21 aarch64.
>> Have the rpms if needed.
>
> Some of the gcc bits I had patched out of the initial gcc build, because
> of the lack of early support and/or bootstrap pain (primarily ada and
> related bits).
>
> Unfortunately building against f21 can potentially cause issues with
> gcc/glibc artifacts because of the newer glibc/gcc included in fedora.
>
> When we did the initial port/build for this, we had to start from f19
> aarch64 builds and work up from there because of this. If you can
> (re)build against the el7 aarch64 build, that will give you a better
> result. I'll poke it tomorrow.
>