> On 26 Nov 2023, at 10:05, Sebastian Huber
> <sebastian.hu...@embedded-brains.de> wrote:
>
> On 26.11.23 01:35, Iain Sandoe wrote:
>>> On 25 Nov 2023, at 21:44, Sebastian Huber
>>> <sebastian.hu...@embedded-brains.de> wrote:
>>>
>>> On 25.11.23 14:59, Richard Biener wrote:
>>>> On Sat, Nov 25, 2023 at 12:26 PM Sebastian Huber
>>>> <sebastian.hu...@embedded-brains.de> wrote:
>>>>> contrib/ChangeLog
>>>> Did you verify an in-tree build with these works and the testsuite
>>>> is clean?
>>>
>>> I was able to build a native GCC:
>>>
>>> /tmp/sh/i-native/bin/gcc --version --verbose
>>> Using built-in specs.
>>> COLLECT_AS_OPTIONS='--version'
>>> COLLECT_GCC=/tmp/sh/i-native/bin/gcc
>>> COLLECT_LTO_WRAPPER=/tmp/sh/i-native/lib/gcc/x86_64-pc-linux-gnu/14.0.0/lto-wrapper
>>> gcc (GCC) 14.0.0 20231125 (experimental) [master 9c26c91b94e]
>>> Copyright (C) 2023 Free Software Foundation, Inc.
>>> This is free software; see the source for copying conditions. There is NO
>>> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
>>>
>>>
>>> Target: x86_64-pc-linux-gnu
>>> Configured with: /home/EB/sebastian_h/src/gcc/configure
>>> --prefix=/tmp/sh/i-native --verbose --enable-checking=yes,rtl
>>> --disable-libsanitizer --disable-multilib --disable-bootstrap
>>> --enable-languages=c,c++
>>> Thread model: posix
>>> Supported LTO compression algorithms: zlib
>>> gcc version 14.0.0 20231125 (experimental) [master 9c26c91b94e] (GCC)
>>> COLLECT_GCC_OPTIONS='--version' '-v' '-mtune=generic' '-march=x86-64'
>>> '-dumpdir' 'a-'
>>> /tmp/sh/i-native/lib/gcc/x86_64-pc-linux-gnu/14.0.0/cc1 -quiet -v
>>> help-dummy -quiet -dumpdir a- -dumpbase help-dummy -mtune=generic
>>> -march=x86-64 -version --version -o /tmp/ccHTKJ5B.s
>>> GNU C17 (GCC) version 14.0.0 20231125 (experimental) [master 9c26c91b94e]
>>> (x86_64-pc-linux-gnu)
>>> compiled by GNU C version 14.0.0 20231122 (experimental) [master
>>> 6bf66276e3e], GMP version 6.3.0, MPFR version 4.2.1, MPC version 1.3.1, isl
>>> version isl-0.26-GMP
>>> [...]
>>>
>>> However, I noticed that this was with a disabled bootstrap (for the git
>>> bisect). The bootstrap fails with an error in ISL 0.26 which seems to be a
>>> known issue:
>>>
>>> https://www.mail-archive.com/gcc@gcc.gnu.org/msg101643.html
>>>
>>> I thought that the GCC prerequisite library maintainers check that a new
>>> release is able to bootstrap GCC, but this seems to be not the case. The
>>> older releases have problems to recognize arm64-apple.
>> 0.24 (at least) builds fine in-tree on aarch64-apple-darwin21; do you have a
>> pointer to the recognition issue?
>> I’ll try 0.25 in the next few days.
>
> For the RTEMS Project we had to add patches to ISL, MPC, MPFR for
> ARM64/Darwin hosts:
>
> https://github.com/RTEMS/rtems-source-builder/commit/5e76e64bccc2d84acb6c37380f2f9d98df3b7382
>
> Specifically for ISL 0.24 this is:
>
> https://devel.rtems.org/raw-attachment/ticket/4657/fix-mac-arm64-isl-config.patch
OK, it is possible (even likely) that the issue you are seeing is configuring
with “arm64-xxxx-darwinNN”.
Although Apple has named the platform Arm64, the configuration used for OSS is
still “aarch64-apple-darwinNN”
When I first began work on the port, I discussed this with the config script
maintainers, and the end result was that “aarch64-apple-darwinNN” had already
been adopted (and that was, shall we say, a “firm position” from their
perspective), so arm64-apple-darwinNN is not actually canonical.
We do use “-arch arm64” in specs etc. that have to interface with system tools
(like ld etc); but elsewhere the port is ‘aarch64’.
e.g.
$ ./config.sub arm64-apple-darwin21
aarch64-apple-darwin21
HTH
Iain
>
> I naively thought that updating to the latest releases would help us to get
> rid of the patches.
>
> --
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