我试图从谷歌官方文档构建android内核，从头开始使用官方build.sh，但得到的错误消息如下：
VDSOSYM include/generated/vdso-offsets.h
LDS arch/arm64/kernel/vdso32/vdso.lds
VDSOC32 arch/arm64/kernel/vdso32/vgettimeofday.o
VDSOA32 arch/arm64/kernel/vdso32/sigreturn.o
HOSTCC arch/arm64/kernel/vdso32/../../../arm/vdso/vdsomunge
clang-5.0: warning: optimization flag '-fno-delete-null-pointer-checks' is not supported [-Wignored-optimization-argument]
VDSOL32 arch/arm64/kernel/vdso32/vdso.so.raw
/..//bin/ld: unrecognised emulation mode: armelf_linux_eabi
Supported emulations: elf_x86_64 elf32_x86_64 elf_i386 elf_iamcu i386pep i386pe elf64bpf
clang-5.0: error: linker command failed with exit code 1 (use -v to see invocation)
make[3]: *** [/home/tonki/aosp/newkernel/private/msm-google/arch/arm64/kernel/vdso32/Makefile:138: arch/arm64/kernel/vdso32/vdso.so.raw] Error 1
make[2]: *** [arch/arm64/Makefile:242: vdso_prepare] Error 2
make[1]: *** [Makefile:152: sub-make] Error 2
make: *** [Makefile:24: __sub-make] Error 2
我看了一下arch/arm64/kernel/vdso32/Makefile文件，发现了这一行CC_ARM32 := $(CC) $(CLANG_TARGET_ARM32)，它使用clang --target=arm-linux-androideabi来链接vdso32.raw图像，但使用/usr/bin/ld来链接
我的操作系统是Arch Linux发行版，没有像Ubuntu的apt工具那样可以用pacman安装的gcc-arm-linux-androideabi官方软件包
分支：AOSP内核/android-msm-crosshatch-4.9-pie-qpr2。
设备：Pixel 3XL
内核配置：官方b1c1_defconfig(arch/arm64/configs/b1c1_defcconfig(
问题：我该如何解决？我不知道这里。谢谢
我试图找到错误的详细信息
我打开使详细消息输出。
clang --target=arm-linux-androideabi -Wp,-MD,arch/arm64/kernel/vdso32/.vdso.so.raw.d -nostdinc -isystem /home/tonki/aosp/newkernel/prebuilts-master/clang/host/linux-x86/clang-4393122/lib64/clang/5.0.1/include -I/home/tonki/aosp/newkernel/private/msm-google/arch/arm64/include -I./arch/arm64/include/generated/uapi -I./arch/arm64/include/generated -I/home/tonki/aosp/newkernel/private/msm-google/include -I./include -I/home/tonki/aosp/newkernel/private/msm-google/arch/arm64/include/uapi -I/home/tonki/aosp/newkernel/private/msm-google/include/uapi -I./include/generated/uapi -include /home/tonki/aosp/newkernel/private/msm-google/include/linux/kconfig.h -D__KERNEL__ -Qunused-arguments -mlittle-endian -Wl,-Bsymbolic -Wl,--no-undefined -Wl,-soname=linux-vdso.so.1 -Wl,-z,max-page-size=4096 -Wl,-z,common-page-size=4096 -nostdlib -shared -mfloat-abi=soft -Wl,-T arch/arm64/kernel/vdso32/vdso.lds arch/arm64/kernel/vdso32/vgettimeofday.o arch/arm64/kernel/vdso32/sigreturn.o -o arch/arm64/kernel/vdso32/vdso.so.raw
我想clang-target=arm linux androidabi是用system'ld链接vdso.so.raw的，所以我找到了这个链接，最后我修改成这样在arch/arm64/kernel/vdso32/Makefile:8中
CC_ARM32 := $(CC) $(CLANG_TARGET_ARM32) -gcc-toolchain /home/tonki/aosp/newkernel/prebuilts/ndk-r23/toolchains/llvm/prebuilt/linux-x86_64
终于成功了！