本文介绍了在macOS上对Clang使用-fuse-ld = lld的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我在macOS 10.15上使用Clang 10(而不是AppleClang),并尝试通过在CMake标志 CMAKE_EXE_LINKER_FLAGS
中指定 -fuse-ld = lld
来与LLD链接.
I am using Clang 10 (not AppleClang) on macOS 10.15 and am trying to link with LLD by specifying -fuse-ld=lld
in the CMake flags CMAKE_EXE_LINKER_FLAGS
.
但是,当我尝试使用LLD时出现以下错误:
However, I am getting the following error when I try to use LLD:
The C++ compiler
"/Users/XXX/llvm/bin/clang++"
is not able to compile a simple test program.
It fails with the following output:
ld64.lld: warning: ignoring unknown argument: -platform_version
ld64.lld: warning: ignoring unknown argument: -search_paths_first
ld64.lld: warning: ignoring unknown argument: -headerpad_max_install_names
ld64.lld: warning: -sdk_version is required when emitting min version load command. Setting sdk version to match provided min version
ld64.lld: error: Unable to find library for -lc++
clang-10: error: linker command failed with exit code 1 (use -v to see invocation)
make[1]: *** [cmTC_0d561] Error 1
make: *** [cmTC_0d561/fast] Error 2
这是我的程序:
#include <iostream>
#include <cstdlib>
int main()
{
std::cout << "Hello World!" << std::endl;
return EXIT_SUCCESS;
}
这是我的CMakeLists.txt文件:
Here is my CMakeLists.txt file:
cmake_minimum_required(VERSION 3.15 FATAL_ERROR)
set(CMAKE_OSX_DEPLOYMENT_TARGET "10.13")
project(test VERSION 2.0 LANGUAGES CXX)
add_executable(testprog "${CMAKE_CURRENT_SOURCE_DIR}/src/main.cpp")
这是我的bash脚本,用于启动CMake:
Here is my bash script to launch CMake:
#!/bin/bash
root="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
sys_root="/Users/XXX/macOS-sdks/MacOSX10.13.sdk"
cmake_bin_path="/Applications/CMake.app/Contents/bin"
llvm_bin="/Users/XXX/llvm/bin"
function add_search_path() {
if [ -d "$1" ] && [[ ":$PATH:" != *":$1:"* ]]; then
PATH="${PATH:+"$PATH:"}$1"
fi
}
add_search_path $cmake_bin_path
add_search_path $llvm_bin
cd "${root}/build"
cmake -DCMAKE_OSX_SYSROOT=${sys_root} \
-DCMAKE_C_COMPILER="${llvm_bin}/clang" \
-DCMAKE_CXX_COMPILER="${llvm_bin}/clang++" \
-DCMAKE_EXE_LINKER_FLAGS="-fuse-ld=lld" \
-DCMAKE_OSX_ARCHITECTURES=x86_64 \
-DCMAKE_BUILD_TYPE=Debug ..
cores=`sysctl -n hw.physicalcpu`
cmake --build "${root}/build" --target all -- -j ${cores}
./testprog
推荐答案
lld
在macOS上不起作用.使用 ld
或 ld64
.cf. http://lists.llvm.org/pipermail/cfe-dev/2019-March/061666.html
lld
doesn't work on macOS. Use ld
aka ld64
.cf. http://lists.llvm.org/pipermail/cfe-dev/2019-March/061666.html
这篇关于在macOS上对Clang使用-fuse-ld = lld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!