objdump :无法识别的文件格式

Question

当我试图编译Gentoo下的新内核时，我遇到了这些错误.

scripts/kconfig/conf  --syncconfig Kconfig
  DESCEND  objtool
  CC      kernel/bounds.s
  CC      arch/x86/kernel/asm-offsets.s
  GEN     scripts/gdb/linux/constants.py
  CALL    scripts/checksyscalls.sh
  CC [M]  arch/x86/kvm/../../../virt/kvm/kvm_main.o
  CC      init/main.o
  CC      kernel/bpf/core.o
  CC      arch/x86/ia32/sys_ia32.o
  CC      arch/x86/kernel/acpi/boot.o
  CC      arch/x86/events/amd/core.o
  CC      certs/system_keyring.o
  CC      arch/x86/entry/vdso/vma.o
  CC      arch/x86/crypto/sha1-mb/sha1_mb.o
objdump: certs/.tmp_system_keyring.o: unable to initialize decompress status for section .debug_info
objdump: certs/.tmp_system_keyring.o: unable to initialize decompress status for section .debug_info
objdump: certs/.tmp_system_keyring.o: file format not recognized
  EXTRACT_CERTS
  AS      certs/system_certificates.o
  AR      certs/built-in.a
objdump: arch/x86/ia32/.tmp_sys_ia32.o: unable to initialize decompress status for section .debug_info
objdump: arch/x86/ia32/.tmp_sys_ia32.o: unable to initialize decompress status for section .debug_info
objdump: arch/x86/ia32/.tmp_sys_ia32.o: file format not recognized
objdump: arch/x86/events/amd/.tmp_core.o: unable to initialize decompress status for section .debug_info
objdump: arch/x86/events/amd/.tmp_core.o: unable to initialize decompress status for section .debug_info
objdump: arch/x86/events/amd/.tmp_core.o: file format not recognized
  CC      arch/x86/ia32/ia32_signal.o
  CC      arch/x86/mm/init.o
  CC      arch/x86/events/amd/uncore.o
objdump: arch/x86/entry/vdso/.tmp_vma.o: unable to initialize decompress status for section .debug_info
objdump: arch/x86/entry/vdso/.tmp_vma.o: unable to initialize decompress status for section .debug_info
objdump: arch/x86/entry/vdso/.tmp_vma.o: file format not recognized
  CC      arch/x86/entry/vdso/vdso32-setup.o
objdump: arch/x86/kernel/acpi/.tmp_boot.o: unable to initialize decompress status for section .debug_info
objdump: arch/x86/kernel/acpi/.tmp_boot.o: unable to initialize decompress status for section .debug_info
objdump: arch/x86/kernel/acpi/.tmp_boot.o: file format not recognized
  CC      arch/x86/kernel/acpi/sleep.o
  AR      arch/x86/crypto/sha1-mb/built-in.a
objdump: init/.tmp_main.o: unable to initialize decompress status for section .debug_info
objdump: init/.tmp_main.o: unable to initialize decompress status for section .debug_info
objdump: init/.tmp_main.o: file format not recognized
...

我已经重新构建了binutils (它是objdump来源的包)，但没有任何效果。

我可以编译和安装其他软件包/软件，没有任何问题，但这阻碍了内核编译的完成。

Answer 1

根据bug 671650的说法，elfutils-0.175在对齐方面存在问题。

切换到链接器ld.gold发布了大量关于区段排列的警告。

请尝试恢复到elfutils-0.173：

# emerge dev-libs/elfutils-0.173

然后重建你的内核。

在我的系统上，sys-kernel/gentoo-sources-4.19.3可以用elfutils-0.173构建和加载。