问题描述
我正在笔记本电脑上编写 c 代码，我想使用 llvm-clang 工具链将其交叉编译为 ARM v7 架构.
I am writing c code on my laptop and I would like to cross compile it to ARM v7 architecture using the llvm-clang toolchain.
我正在关注这个网站 http://llvm.org/docs/HowToCrossCompileLLVM.html使用这个命令来配置cmake:
I am following this website http://llvm.org/docs/HowToCrossCompileLLVM.html using this command to configure cmake:
我正在使用以下命令并收到以下错误(见下文).知道出了什么问题吗?
I am using the following command and getting the following errors (see below). Any idea what is wrong?
谢谢
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cmake -G Ninja/home/user/Desktop/llvm/llvm -DCMAKE_CROSSCOMPILING=True -DCMAKE_INSTALL_PREFIX=/home/user/Desktop/llvm/llvm/new_build -DLLVM_TABLEGEN=/usr/bin/host/llvm-tblgen -DCLANG_TABLEGEN=/usr/bin/host/clang-tblgen -DLLVM_DEFAULT_TARGET_TRIPLE=arm-linux-gnueabihf -DLLVM_TARGET_ARCH=ARM -DLLVM_TARGETS_TO_BUILD=ARM -DCMAKE_CXX_FLAGS='-target tex armv7a-linux-usrmpua9arm-linux-gnueabihf/include/c++/4.7.2/arm-linux-gnueabihf/-I/usr/arm-linux-gnueabihf/include/-mfloat-abi=hard -ccc-gcc-name arm-linux-gnueabihf-gcc'
cmake -G Ninja /home/user/Desktop/llvm/llvm -DCMAKE_CROSSCOMPILING=True -DCMAKE_INSTALL_PREFIX=/home/user/Desktop/llvm/llvm/new_build -DLLVM_TABLEGEN=/usr/bin/host/llvm-tblgen -DCLANG_TABLEGEN=/usr/bin/host/clang-tblgen -DLLVM_DEFAULT_TARGET_TRIPLE=arm-linux-gnueabihf -DLLVM_TARGET_ARCH=ARM -DLLVM_TARGETS_TO_BUILD=ARM -DCMAKE_CXX_FLAGS='-target armv7a-linux-gnueabihf -mcpu=cortex-a9 -I/usr/arm-linux-gnueabihf/include/c++/4.7.2/arm-linux-gnueabihf/ -I/usr/arm-linux-gnueabihf/include/ -mfloat-abi=hard -ccc-gcc-name arm-linux-gnueabihf-gcc'
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错误:
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-- CXX 编译器标识为 Clang 3.5.0-- 检查工作 CXX 编译器使用:忍者-- 检查工作 CXX 编译器使用:忍者 -- 损坏/usr/share/cmake-2.8/Modules/CMakeTestCXXCompiler.cmake:54 处的 CMake 错误(消息):C++编译器/usr/bin/clang++"无法编译一个简单的测试程序.
-- The CXX compiler identification is Clang 3.5.0-- Check for working CXX compiler using: Ninja-- Check for working CXX compiler using: Ninja -- brokenCMake Error at /usr/share/cmake-2.8/Modules/CMakeTestCXXCompiler.cmake:54 (message): The C++ compiler "/usr/bin/clang++" is not able to compile a simple test program.
失败，输出如下:
更改目录:/home/user/Desktop/llvm/llvm/new_build/CMakeFiles/CMakeTmp
Change Dir: /home/user/Desktop/llvm/llvm/new_build/CMakeFiles/CMakeTmp
运行构建命令:/usr/bin/ninja cmTryCompileExec1541562247
Run Build Command:/usr/bin/ninja cmTryCompileExec1541562247
[1/2] 构建 CXX 对象
[1/2] Building CXX object
CMakeFiles/cmTryCompileExec1541562247.dir/testCXXCompiler.cxx.o
CMakeFiles/cmTryCompileExec1541562247.dir/testCXXCompiler.cxx.o
[2/2] 链接 CXX 可执行文件 cmTryCompileExec1541562247
[2/2] Linking CXX executable cmTryCompileExec1541562247
失败::&&/usr/bin/clang++ -target armv7a-linux-gnueabihf
FAILED: : && /usr/bin/clang++ -target armv7a-linux-gnueabihf
-mcpu=cortex-a9
-mcpu=cortex-a9
-I/usr/arm-linux-gnueabihf/include/c++/4.7.2/arm-linux-gnueabihf/
-I/usr/arm-linux-gnueabihf/include/c++/4.7.2/arm-linux-gnueabihf/
-I/usr/arm-linux-gnueabihf/include/-mfloat-abi=hard -ccc-gcc-name
-I/usr/arm-linux-gnueabihf/include/ -mfloat-abi=hard -ccc-gcc-name
arm-linux-gnueabihf-gcc
arm-linux-gnueabihf-gcc
CMakeFiles/cmTryCompileExec1541562247.dir/testCXXCompiler.cxx.o -o
CMakeFiles/cmTryCompileExec1541562247.dir/testCXXCompiler.cxx.o -o
cmTryCompileExec1541562247 -rdynamic &&:
cmTryCompileExec1541562247 -rdynamic && :
/usr/bin/ld: 无法识别的仿真模式:armelf_linux_eabi
/usr/bin/ld: unrecognised emulation mode: armelf_linux_eabi
支持的仿真:elf_x86_64 elf32_x86_64 elf_i386 i386linux elf_l1om
Supported emulations: elf_x86_64 elf32_x86_64 elf_i386 i386linux elf_l1om
elf_k1om i386pep i386pe
elf_k1om i386pep i386pe
clang: 错误:链接器命令失败，退出代码为 1(使用 -v 查看
clang: error: linker command failed with exit code 1 (use -v to see
调用)
ninja:构建停止:子命令失败.
ninja: build stopped: subcommand failed.
CMake 将无法正确生成此项目.
CMake will not be able to correctly generate this project.
调用堆栈(最近的调用在前):
Call Stack (most recent call first):
CMakeLists.txt:19(项目)
CMakeLists.txt:19 (project)
-- 配置不完整，出现错误！
-- Configuring incomplete, errors occurred!
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推荐答案
您使用了错误的指南.
您链接的网页是关于如何使用 LLVM 和 Clang 交叉编译 LLVM 和 Clang 的指南.但是您不想编译 LLVM 本身，您只想使用它.指南是:http://clang.llvm.org/docs/CrossCompilation.html
The web page you linked is a guide on how to cross-compile LLVM and Clang using LLVM and Clang. But you don't want to compile LLVM itself, you only want to use it. The guide for that is: http://clang.llvm.org/docs/CrossCompilation.html
这篇关于使用 llvm 从桌面到 arm 进行交叉编译的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！