Jan Kiszka <jan.kis...@siemens.com> writes:
> On 07.08.21 19:00, Philippe Gerum wrote: >> >> Jan Kiszka <jan.kis...@siemens.com> writes: >> >>> Hi all, >>> >>> just wanted to debug the RTnet issues we now see in CI on arm and arm64. >>> I picked arm as first target, but that apparently starts to break with >>> gcc-9 or newer (tried 9.2 and 10.2): >>> >>> make[5]: Entering directory '/xenomai/lib/cobalt/arch/arm' >>> CC libarch_la-features.lo >>> features.c: In function 'cobalt_arch_check_features': >>> features.c:82:1: error: r7 cannot be used in 'asm' here >>> 82 | } >>> | ^ >>> >>> That seems to be related to passing the syscall number via r7 on ARM. Is >>> our ABI soon no longer compilable, or can we fix this? >>> >> >> Just tried to reproduce this issue with the latest stable (10.3-2021.07) >> from ARM [1], and a fairly recent linaro snapshot (11.0.1-2021.03) [2], >> to no avail. I tried with --enable-debug=symbols, --disable-debug, >> --enable-debug=full, no issue so far. >> >> Can you please share you configure settings? > > I'm on ARM gcc 10.3-2021.07 as well. Debian's gcc from bullseye show > this, too. > > ./configure --host=arm-none-linux-gnueabihf --enable-debug=full > > on master. And that results in > > CC libarch_la-features.lo > ../../../../../lib/cobalt/arch/arm/features.c: In function > ‘cobalt_arch_check_features’: > ../../../../../lib/cobalt/arch/arm/features.c:82:1: error: r7 cannot be used > in ‘asm’ here > 82 | } > | ^ > Confirmed, found it. next is fine with this compiler, which is the version I tested. However, building stable and master does break. -- Philippe.
