在使用Clang进行编译时,链接器无法在64位Mint OS下找到32位库

Question

我刚刚在64位Mint OS(版本17)上安装了Clang 3.5.我正在尝试以32位编译我的程序,但是我遇到了问题.

我test.cpp在我的主目录中调用了一个文件,其中包含以下代码:

#include <iostream>

int main()
{
    std::cout << "Hello" << std::endl;
}

然后我运行以下命令:

$ clang++ -m32 -Wl,--verbose test.cpp | grep libgcc

我得到以下输出:

$ clang++ -m32 -Wl,--verbose test.cpp | grep libgcc
/usr/bin/ld: skipping incompatible /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/libstdc++.so when searching for -lstdc++
/usr/bin/ld: skipping incompatible /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/libstdc++.a when searching for -lstdc++
/usr/bin/ld: cannot find -lstdc++
/usr/bin/ld: skipping incompatible /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/libgcc_s.so when searching for -lgcc_s
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/libgcc_s.so succeeded
/usr/bin/ld: cannot find -lgcc_s
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/libgcc_s.a failed
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../i386-linux-gnu/libgcc_s.so failed
/usr/bin/ld: skipping incompatible /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/libgcc.a when searching for -lgcc
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../i386-linux-gnu/libgcc_s.a failed
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../lib32/libgcc_s.so failed
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../lib32/libgcc_s.a failed
attempt to open /usr/bin/../lib/i386-linux-gnu/libgcc_s.so failed
/usr/bin/ld: cannot find -lgcc
attempt to open /usr/bin/../lib/i386-linux-gnu/libgcc_s.a failed
attempt to open /usr/bin/../lib32/libgcc_s.so failed
attempt to open /usr/bin/../lib32/libgcc_s.a failed
attempt to open /lib/i386-linux-gnu/libgcc_s.so failed
attempt to open /lib/i386-linux-gnu/libgcc_s.a failed
attempt to open /lib/../lib32/libgcc_s.so failed
attempt to open /lib/../lib32/libgcc_s.a failed
attempt to open /usr/lib/i386-linux-gnu/libgcc_s.so failed
attempt to open /usr/lib/i386-linux-gnu/libgcc_s.a failed
attempt to open /usr/lib/../lib32/libgcc_s.so failed
attempt to open /usr/lib/../lib32/libgcc_s.a failed
attempt to open /usr/lib/x86_64-linux-gnu/../../lib32/libgcc_s.so failed
attempt to open /usr/lib/x86_64-linux-gnu/../../lib32/libgcc_s.a failed
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../libgcc_s.so failed
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../libgcc_s.a failed
attempt to open /usr/bin/../lib/libgcc_s.so failed
attempt to open /usr/bin/../lib/libgcc_s.a failed
attempt to open /lib/libgcc_s.so failed
attempt to open /lib/libgcc_s.a failed
attempt to open /usr/lib/libgcc_s.so failed
attempt to open /usr/lib/libgcc_s.a failed
attempt to open /usr/i386-linux-gnu/lib32/libgcc_s.so failed
attempt to open /usr/i386-linux-gnu/lib32/libgcc_s.a failed
attempt to open /usr/x86_64-linux-gnu/lib32/libgcc_s.so failed
attempt to open /usr/x86_64-linux-gnu/lib32/libgcc_s.a failed
attempt to open //usr/local/lib/i386-linux-gnu/libgcc_s.so failed
attempt to open //usr/local/lib/i386-linux-gnu/libgcc_s.a failed
attempt to open //usr/local/lib32/libgcc_s.so failed
attempt to open //usr/local/lib32/libgcc_s.a failed
attempt to open //lib/i386-linux-gnu/libgcc_s.so failed
attempt to open //lib/i386-linux-gnu/libgcc_s.a failed
attempt to open //lib32/libgcc_s.so failed
attempt to open //lib32/libgcc_s.a failed
attempt to open //usr/lib/i386-linux-gnu/libgcc_s.so failed
attempt to open //usr/lib/i386-linux-gnu/libgcc_s.a failed
attempt to open //usr/lib32/libgcc_s.so failed
attempt to open //usr/lib32/libgcc_s.a failed
attempt to open //usr/local/lib/libgcc_s.so failed
attempt to open //usr/local/lib/libgcc_s.a failed
attempt to open //lib/libgcc_s.so failed
attempt to open //lib/libgcc_s.a failed
attempt to open //usr/lib/libgcc_s.so failed
attempt to open //usr/lib/libgcc_s.a failed
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/libgcc.so failed
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/libgcc.a succeeded
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../i386-linux-gnu/libgcc.so failed
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../i386-linux-gnu/libgcc.a failed
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../lib32/libgcc.so failed
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../../lib32/libgcc.a failed
attempt to open /usr/bin/../lib/i386-linux-gnu/libgcc.so failed
attempt to open /usr/bin/../lib/i386-linux-gnu/libgcc.a failed
attempt to open /usr/bin/../lib32/libgcc.so failed
attempt to open /usr/bin/../lib32/libgcc.a failed
attempt to open /lib/i386-linux-gnu/libgcc.so failed
attempt to open /lib/i386-linux-gnu/libgcc.a failed
attempt to open /lib/../lib32/libgcc.so failed
attempt to open /lib/../lib32/libgcc.a failed
attempt to open /usr/lib/i386-linux-gnu/libgcc.so failed
attempt to open /usr/lib/i386-linux-gnu/libgcc.a failed
attempt to open /usr/lib/../lib32/libgcc.so failed
attempt to open /usr/lib/../lib32/libgcc.a failed
attempt to open /usr/lib/x86_64-linux-gnu/../../lib32/libgcc.so failed
attempt to open /usr/lib/x86_64-linux-gnu/../../lib32/libgcc.a failed
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../libgcc.so failed
attempt to open /usr/bin/../lib/gcc/x86_64-linux-gnu/4.8/../../../libgcc.a failed
attempt to open /usr/bin/../lib/libgcc.so failed
attempt to open /usr/bin/../lib/libgcc.a failed
attempt to open /lib/libgcc.so failed
attempt to open /lib/libgcc.a failed
attempt to open /usr/lib/libgcc.so failed
attempt to open /usr/lib/libgcc.a failed
attempt to open /usr/i386-linux-gnu/lib32/libgcc.so failed
attempt to open /usr/i386-linux-gnu/lib32/libgcc.a failed
attempt to open /usr/x86_64-linux-gnu/lib32/libgcc.so failed
attempt to open /usr/x86_64-linux-gnu/lib32/libgcc.a failed
attempt to open //usr/local/lib/i386-linux-gnu/libgcc.so failed
attempt to open //usr/local/lib/i386-linux-gnu/libgcc.a failed
attempt to open //usr/local/lib32/libgcc.so failed
attempt to open //usr/local/lib32/libgcc.a failed
attempt to open //lib/i386-linux-gnu/libgcc.so failed
attempt to open //lib/i386-linux-gnu/libgcc.a failed
attempt to open //lib32/libgcc.so failed
attempt to open //lib32/libgcc.a failed
attempt to open //usr/lib/i386-linux-gnu/libgcc.so failed
attempt to open //usr/lib/i386-linux-gnu/libgcc.a failed
attempt to open //usr/lib32/libgcc.so failed
attempt to open //usr/lib32/libgcc.a failed
attempt to open //usr/local/lib/libgcc.so failed
attempt to open //usr/local/lib/libgcc.a failed
attempt to open //lib/libgcc.so failed
attempt to open //lib/libgcc.a failed
attempt to open //usr/lib/libgcc.so failed
attempt to open //usr/lib/libgcc.a failed
clang: error: linker command failed with exit code 1 (use -v to see invocation)

我已经完成了所有谷歌搜索和自我调查,我不知道为什么这个简单的例子不起作用.任何人都可以帮助弄清楚我错过了什么？

Answer 1

以下是使用clang进行交叉编译时要确定的内容:

• 你安装了32位(x86)C++库吗？(看来你有,但只是确定.)

• 尝试使用--sysroot=<location of your 32-bit multilibs>.这将告诉铛来搜索bin,lib以及include在特定目录中的目录,你告诉它,而不是使用它(定义不清)的硬编码路径.

• 尝试使用-I和-L选项更具体地告诉clang你的include和lib目录的位置.

• 最糟糕的情况,如果上述工作都没有:尝试使用该-B <path>选项告诉clang具体使用哪个链接器.尝试将此选项与之前的选项结合使用.

有关更多详细信息,请参阅http://clang.llvm.org/docs/CrossCompilation.html(尽管该-B选项不在此处)

Answer 2

你需要安装一个multilib g++sudo apt-get install g++-multilib。

g++-multilib还应该安装所有其他必需的依赖项，例如libc6-i386.