【发布时间】:2021-06-22 06:16:17
【问题描述】:
所以在为我的 1plus 手机编译 android 内核时,经过 3 天多次尝试后,我放弃并尝试在这里询问是否有人以前遇到过这个问题。
这个错误对我来说有点晦涩难懂,但我觉得这个问题来自我最近对 GNU/Linux 发行版 (Gentoo) 的更改,它在不应该的情况下以某种方式覆盖了 AS 环境变量;它无法组装 VDSO,但遗憾的是我不知道压倒一切的来源。 (也许他们修改了 make 命令以允许支持标志覆盖等。)
编辑,小版本:
make RANLIB=/media/sda2/git/linux-x86/clang-bootstrap/bin/llvm-ranlib CC='/media/sda2/git/linux-x86/clang-bootstrap/bin/clang -fintegrated-as' LD=/media/sda2/git/linux-x86/clang-bootstrap/bin/ld.lld AR=/media/sda2/git/linux-x86/clang-bootstrap/bin/llvm-ar AS=/media/sda2/git/linux-x86/clang-bootstrap/bin/llvm-as NM=/media/sda2/git/linux-x86/clang-bootstrap/bin/llvm-nm OBJCOPY=/media/sda2/git/linux-x86/clang-bootstrap/bin/llvm-objcopy OBJDUMP=/media/sda2/git/linux-x86/clang-bootstrap/bin/llvm-objdump READELF=/media/sda2/git/linux-x86/clang-bootstrap/bin/llvm-readelf OBJSIZE=/media/sda2/git/linux-x86/clang-bootstrap/bin/llvm-size STRIP=/media/sda2/git/linux-x86/clang-bootstrap/bin/llvm-strip
CC kernel/bounds.s
CC arch/arm64/kernel/asm-offsets.s
In file included from arch/arm64/kernel/asm-offsets.c:25:
In file included from ./include/linux/kvm_host.h:39:
In file included from ./arch/arm64/include/asm/kvm_host.h:42:
In file included from ./include/kvm/arm_pmu.h:21:
In file included from ./include/linux/perf_event.h:57:
In file included from ./include/linux/cgroup.h:28:
./include/linux/cgroup-defs.h:475:16: warning: field 'cgrp' with variable sized type 'struct cgroup' not at the end of a struct or class is a GNU extension [-Wgnu-variable-sized-type-not-at-end]
struct cgroup cgrp;
^
1 warning generated.
CALL scripts/checksyscalls.sh
LDS arch/arm64/kernel/vdso/vdso.lds
VDSOA arch/arm64/kernel/vdso/gettimeofday.o
/usr/bin/as: unrecognized option '-EL'
clang-12: error: assembler command failed with exit code 1 (use -v to see invocation)
make[1]: *** [arch/arm64/kernel/vdso/Makefile:57: arch/arm64/kernel/vdso/gettimeofday.o] Error 1
make: *** [arch/arm64/Makefile:201: vdso_prepare] Error 2
环境变量:
# https://android.googlesource.com/platform/prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/
export PATH='/media/sda2/git/aarch64-linux-android-4.9/bin':${PATH}
export LD_LIBRARY_PATH='/media/sda2/git/aarch64-linux-android-4.9/lib':${LD_LIBRARY_PATH}
# git clone https://android.googlesource.com/platform/prebuilts/clang/host/linux-x86
export PATH='/media/sda2/git/linux-x86/clang-bootstrap/bin':${PATH}
export LD_LIBRARY_PATH='/media/sda2/git/linux-x86/clang-bootstrap/lib':${LD_LIBRARY_PATH}
export ARCH=arm64
export SUBARCH=arm64
export CROSS_COMPILE='aarch64-linux-android-'
export CROSS_COMPILER=$PATH
export CLANG_TRIPLE='aarch64-linux-gnu-'
export KCFLAGS='-pipe -O3'
export KCPPFLAGS='-pipe -O3'
使用的内核: https://github.com/LineageOS/android_kernel_oneplus_sm8250
有什么想法吗?
我使用 Google 的 clang 预构建编译器(可以自己构建,但为了赢得时间)以便使用 polly 编译 android 内核,因为 Gentoo LLVM 团队显然还没有使用它的标志。
更糟糕的是,我正在考虑使用 Ubuntu binutils/automake 等/创建一个 docker 环境来编译这个内核,但这对我来说没有多大意义,因为我应该能够在我自己的主机上完成它系统。
感谢您的帮助和关心。
【问题讨论】:
-
堆栈溢出问题需要自包含。请在问题本身中提供日志的相关摘录(而不是链接!)。此外,请提供您的构建过程的详细描述。描述必须足以让其他人根据您的描述重现问题。
-
虽然
EL选项的错误听起来很像您尝试使用适用于 x86 的工具链为 ARM 编译/组装内核。鉴于您没有提供足够的详细信息,我无法进一步诊断。 -
嘿,是的,它适用于小端。我已经更新了我的帖子,检查一下,是的,我不得不把它写成一个大日志(详细输出)
标签: android linux assembly clang cross-compiling