See also https://sourceforge.net/p/gnu-efi/bugs/28/. I noticed this during a local build of systemd against kinetic-proposed. It is caused by a warning added in a recent binutils (2.38.50.20220615-4ubuntu1 in kinetic-proposed).
Here's the relevant snippet from a systemd build:
[ 73s] /usr/bin/cc -o src/boot/efi/systemd_boot.so -fuse-ld=bfd -L /usr/lib64 -nostdlib -T /usr/lib64/elf_x86_64_efi.lds -Wl,--build-id=sha1 -Wl,--fatal-warnings -Wl,--no-undefined -Wl,--warn-common -Wl,-Bsymbolic -z nocombreloc /usr/lib64/crt0-efi-x86_64.o -pie -Wl,--no-dynamic-linker -Wno-format-signedness -Wno-missing-field-initializers -Wno-unused-parameter -Wdate-time -Wendif-labels -Werror=format=2 -Werror=implicit-function-declaration -Werror=incompatible-pointer-types -Werror=int-conversion -Werror=overflow -Werror=override-init -Werror=return-type -Werror=shift-count-overflow -Werror=shift-overflow=2 -Werror=undef -Wfloat-equal -Wimplicit-fallthrough=5 -Winit-self -Wlogical-op -Wmissing-include-dirs -Wmissing-noreturn -Wnested-externs -Wold-style-definition -Wpointer-arith -Wredundant-decls -Wshadow -Wstrict-aliasing=2 -Wstrict-prototypes -Wsuggest-attribute=noreturn -Wunused-function -Wwrite-strings -Wno-unused-result -fno-stack-protector -fno-strict-aliasing -fpic -fwide-exec-charset=UCS2 -Wall -Wextra -Wsign-compare -nostdlib -std=gnu99 -ffreestanding -fshort-wchar -fvisibility=hidden -isystem /usr/include/efi -isystem /usr/include/efi/x86_64 -I /home/abuild/rpmbuild/BUILD/systemd-v250.4+suse.54.g736db5a59f/src/fundamental -DSD_BOOT -DGNU_EFI_USE_MS_ABI -include src/boot/efi/efi_config.h -include version.h -mno-red-zone -mno-sse -mno-mmx -O3 -flto=auto src/boot/efi/bootspec-fundamental.c.o src/boot/efi/efivars-fundamental.c.o src/boot/efi/sha256.c.o src/boot/efi/string-util-fundamental.c.o src/boot/efi/assert.c.o src/boot/efi/devicetree.c.o src/boot/efi/disk.c.o src/boot/efi/graphics.c.o src/boot/efi/measure.c.o src/boot/efi/pe.c.o src/boot/efi/secure-boot.c.o src/boot/efi/util.c.o src/boot/efi/boot.c.o src/boot/efi/console.c.o src/boot/efi/drivers.c.o src/boot/efi/random-seed.c.o src/boot/efi/shim.c.o src/boot/efi/xbootldr.c.o src/boot/efi/bcd.c.o -lefi -lgnuefi -lgcc
[ 73s] /usr/bin/ld.bfd: warning: /usr/lib64/crt0-efi-x86_64.o: missing .note.GNU-stack section implies executable stack
