systemd-boot clang-16: error: invalid linker name in argument '-fuse-ld=bfd'

[sm-moshi]

systemd version the issue has been seen with

254.3

Used distribution

Gentoo

Linux kernel version used

6.4.14-gentoo-dist

CPU architectures issue was seen on

aarch64

Component

No response

Expected behaviour you didn't see

I wanted to compile the Gentoo package sys-apps/systemd-utils-254.3 with the USE-Flag boot which allows me to install systemd-boot aka. bootctl onto my openRC system. I'll attach our discussion on the Gentoo Bugs website also and attach our logs. https://bugs.gentoo.org/914008

The system looks like this:

• MacBook Pro 14" M2 Pro 2023 running UTM as a front-end for QEMU 7.2
• the VM is running the latest musl llvm profile from Gentoo, so no glibc is included
• VM: 12 Threads, 14 GB RAM, 128GB /dev/vda containing boot, swap and ext4 as root
• command to install: USE="boot" emerge sys-apps/systemd-utils

Greetings,
Stuart Meya

Unexpected behaviour you saw

When I compiled it with Clang 16.0.6 on aarch64-gentoo-linux-musl the following error appeared in the log:
clang-16: error: invalid linker name in argument '-fuse-ld=bfd'

Detailed:

FAILED: src/boot/efi/linuxaa64.elf.stub clang -o src/boot/efi/linuxaa64.elf.stub src/boot/efi/linuxaa64.elf.stub.p/cpio.c.o src/boot/efi/linuxaa64.elf.stub.p/linux.c.o src/boot/efi/linuxaa64.elf.stub.p/splash.c.o src/boot/efi/linuxaa64.elf.stub.p/stub.c.o -Wl,--as-needed -Wl,--no-undefined -pie -fstack-protector -O2 -pipe -march=native -Wl,-O1 -Wl,--as-needed -Wl,--as-needed -fuse-ld=lld -rtlib=compiler-rt -unwindlib=libunwind -Wl,--as-needed -Wl,--start-group src/boot/efi/libefiaa64.a -fuse-ld=bfd -lgcc -Wl,--end-group -nostdlib -static-pie -Wl,--entry=efi_main -Wl,--fatal-warnings -Wl,--no-dynamic-linker -z text -z common-page-size=4096 -z max-page-size=4096 -z noexecstack -z norelro -T/var/tmp/portage/sys-apps/systemd-utils-254.3/work/systemd-stable-254.3/tools/elf2efi.lds -Wl,-z,nopack-relative-relocs -fcf-protection=none -fno-asynchronous-unwind-tables -fno-exceptions -fno-unwind-tables -fno-sanitize=all -Wno-unused-command-line-argument clang-16: error: invalid linker name in argument '-fuse-ld=bfd'

Steps to reproduce the problem

• start a Gentoo install ISO (https://www.gentoo.org/downloads/)
• go through the stage3 process picking a musl clang/llvm profile
• try to install sys-apps/systemd-utils with the USE flag boot via:
• cat "sys-apps/systemd-utils boot" >> /etc/portage/package.use/boot
• emerge sys-apps/systemd-utils

Additional program output to the terminal or log subsystem illustrating the issue

emerge --info '=sys-apps/systemd-utils-254.3::gentoo': https://914008.bugs.gentoo.org/attachment.cgi?id=870320
emerge -pqv '=sys-apps/systemd-utils-254.3::gentoo': https://914008.bugs.gentoo.org/attachment.cgi?id=870321
/var/tmp/portage/sys-apps/systemd-utils-254.3/temp/build.log: https://914008.bugs.gentoo.org/attachment.cgi?id=870322

[sm-moshi]

@Fuchskaute (https://github.com/Fuchskaute) proposed a quick fix after some testing, but I and I also we from the Gentoo community do think this topic should be addressed with the rising Linux support in Apple Silicon. Hopefully, we can use systemd-boot on bare metal then.

The following would be the gentoo based quick patch:

disable_forced_bfd.patch

[medhefgo]

We currently, do not support linking sd-boot without bfd, mostly because of llvm/llvm-project#61101.

[medhefgo]

Btw, the proper way to not use libgcc is to pass --rtlib=compiler-rt or compiling clang with compiler-rt as default rtlib. Regardless, libgcc is still the correct name for linking.