When PLATFORM_LIBGCC was added to linker command it was not added to the dependency of the .so rule. Thus a build can try to link *_efi.so files before PLATFORM_LIBGCC lib.a is available. This was seen in yocto autobuilder builds with u-boot 2025.07 update, see https://lists.openembedded.org/g/openembedded-core/message/220004
https://autobuilder.yoctoproject.org/valkyrie/api/v2/logs/2914600/raw_inline | rm -f lib/efi_loader/built-in.o; arm-poky-linux-gnueabi-ar cDPrsT lib/efi_loader/built-in.o lib/efi_loader/efi_bootmgr.o lib/efi_loader/efi_bootbin.o lib/efi_loader/efi_boottime.o lib/efi_loader/efi_helper.o lib/efi_loader/efi_console.o lib/efi_loader/efi_device_path.o lib/efi_loader/efi_device_path_to_text.o lib/efi_loader/efi_device_path_utilities.o lib/efi_loader/efi_dt_fixup.o lib/efi_loader/efi_fdt.o lib/efi_loader/efi_file.o lib/efi_loader/efi_hii.o lib/efi_loader/efi_hii_config.o lib/efi_loader/efi_image_loader.o lib/efi_loader/efi_load_options.o lib/efi_loader/efi_memory.o lib/efi_loader/efi_root_node.o lib/efi_loader/efi_runtime.o lib/efi_loader/efi_setup.o lib/efi_loader/efi_string.o lib/efi_loader/efi_unicode_collation.o lib/efi_loader/efi_var_common.o lib/efi_loader/efi_var_mem.o lib/efi_loader/efi_variable.o lib/efi_loader/efi_var_file.o lib/efi_loader/efi_watchdog.o lib/efi_loader/efi_disk.o lib/efi_loader/efi_net.o lib/efi_loader/efi_smbios.o lib/efi_loader/efi_load_initrd.o lib/efi_loader/efi_conformance.o | arm-poky-linux-gnueabi-ld.bfd -nostdlib -zexecstack -znocombreloc -znorelro --no-warn-rwx-segments -L /srv/pokybuild/yocto-worker/oe-selftest-armhost/build/build-st-3119200/tmp/work/beaglebone_yocto-poky-linux-gnueabi/u-boot/2025.07/sources/u-boot-2025.07 -T arch/arm/lib/elf_arm_efi.lds -shared -Bsymbolic -s lib/efi_loader/helloworld.o lib/efi_loader/efi_crt0.o lib/efi_loader/efi_reloc.o lib/efi_loader/efi_freestanding.o arch/arm/lib/lib.a -o lib/efi_loader/helloworld_efi.so | arm-poky-linux-gnueabi-ld.bfd: cannot find arch/arm/lib/lib.a: No such file or directory | make[3]: *** [scripts/Makefile.lib:512: lib/efi_loader/helloworld_efi.so] Error 1 The issue is hard to reproduce but this change can artificially trigger it: --- a/scripts/Makefile.build +++ b/scripts/Makefile.build @@ -353,7 +353,7 @@ $(modorder-target): $(subdir-ym) FORCE # ifdef lib-target quiet_cmd_link_l_target = AR $@ -cmd_link_l_target = rm -f $@; $(AR) cDPrsT$(KBUILD_ARFLAGS) $@ $(lib-y) +cmd_link_l_target = rm -f $@ && echo "HACK, delaying build!" && sleep 60 && $(AR) cDPrsT$(KBUILD_ARFLAGS) $@ $(lib-y) $(lib-target): $(lib-y) FORCE $(call if_changed,link_l_target) Then run a rebuild with: $ rm -f $( find build/ -name lib.a -or -name helloworld_efi.so ) && \ make ... arm-poky-linux-gnueabi-ld.bfd -nostdlib -zexecstack -znocombreloc -znorelro --no-warn-rwx-segments -L /home/mcfrisk/src/base/repo/poky/build_bea glebone/tmp/work/beaglebone_yocto-poky-linux-gnueabi/u-boot/2025.07/sources/u-boot-2025.07 -T arch/arm/lib/elf_arm_efi.lds -shared -Bsymbolic -s lib/efi_loader/helloworld.o lib/efi_loader/efi_crt0.o lib/efi_loader/efi_reloc.o lib/efi_loader/efi_freestanding.o arch/arm/lib/lib.a -o lib/efi_loader/helloworld_efi.so arm-poky-linux-gnueabi-ld.bfd: cannot find arch/arm/lib/lib.a: No such file or directory make[3]: *** [scripts/Makefile.lib:512: lib/efi_loader/helloworld_efi.so] Error 1 Fixes: 43d43241d1c9 ("scripts/Makefile.lib: add PLATFORM_LIBGCC to efi linking") Cc: Adriano Cordova <adria...@gmail.com> Cc: Fabio Estevam <feste...@gmail.com> Signed-off-by: Mikko Rapeli <mikko.rap...@linaro.org> --- scripts/Makefile.lib | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index e89a4a51b74d..54e17b2f8089 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -508,7 +508,7 @@ $(obj)/efi_reloc.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_RELOC:.o=.c) $(recordmcoun $(call cmd,force_checksrc) $(call if_changed_rule,cc_o_c) -$(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o +$(obj)/%_efi.so: $(PLATFORM_LIBGCC) $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o $(call cmd,efi_ld) targets += $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o -- 2.43.0
