On 08.08.21 19:21, Philippe Gerum wrote: > > 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. >
Yeah, I've already pushed the two related fixes into next for testing. Can still be changed if we find a better solution. Jan -- Siemens AG, T RDA IOT Corporate Competence Center Embedded Linux
