链接器错误：/usr/bin/ld：在尝试用clang编译CUDA代码时找不到-lcudart_static

Question

我试图按照官方文档在这里

clang++ axpy.cu -o exec --cuda-gpu-arch=sm_60 -L/usr/local/cuda -lcudart_static -ldl -lrt -pthread

给 ：链接器错误和警告：

clang：警告：未知的CUDA版本。 cuda.h：cuda_version = 11060。假设最新支持的版本10.1 [-wunknown-cuda-version]

/usr/bin/ld：找不到-lcudart_static

clang：error：linker命令因出口代码1失败（使用-V查看调用）

我已安装了Clang版本11。 跑步：

nvidia-smi

我得到：

我在某个地方阅读了我需要添加符号链接到libcudart文件之类的东西，如果有帮助的话。

我会在运行时得到以下输出：

ld -lcudart_static --verbose

attempt to open /usr/local/lib/x86_64-linux-gnu/libcudart_static.so failed
attempt to open /usr/local/lib/x86_64-linux-gnu/libcudart_static.a failed
attempt to open /lib/x86_64-linux-gnu/libcudart_static.so failed
attempt to open /lib/x86_64-linux-gnu/libcudart_static.a failed
attempt to open /usr/lib/x86_64-linux-gnu/libcudart_static.so failed
attempt to open /usr/lib/x86_64-linux-gnu/libcudart_static.a failed
attempt to open /usr/lib/x86_64-linux-gnu64/libcudart_static.so failed
attempt to open /usr/lib/x86_64-linux-gnu64/libcudart_static.a failed
attempt to open /usr/local/lib64/libcudart_static.so failed
attempt to open /usr/local/lib64/libcudart_static.a failed
attempt to open /lib64/libcudart_static.so failed
attempt to open /lib64/libcudart_static.a failed
attempt to open /usr/lib64/libcudart_static.so failed
attempt to open /usr/lib64/libcudart_static.a failed
attempt to open /usr/local/lib/libcudart_static.so failed
attempt to open /usr/local/lib/libcudart_static.a failed
attempt to open /lib/libcudart_static.so failed
attempt to open /lib/libcudart_static.a failed
attempt to open /usr/lib/libcudart_static.so failed
attempt to open /usr/lib/libcudart_static.a failed
attempt to open /usr/x86_64-linux-gnu/lib64/libcudart_static.so failed
attempt to open /usr/x86_64-linux-gnu/lib64/libcudart_static.a failed
attempt to open /usr/x86_64-linux-gnu/lib/libcudart_static.so failed
attempt to open /usr/x86_64-linux-gnu/lib/libcudart_static.a failed
ld: cannot find -lcudart_static
attempt to open /usr/local/lib/x86_64-linux-gnu/libcudart_static.so failed
attempt to open /usr/local/lib/x86_64-linux-gnu/cudart_static.a failed
attempt to open /lib/x86_64-linux-gnu/libcudart_static.so failed
attempt to open /lib/x86_64-linux-gnu/cudart_static.a failed
attempt to open /usr/lib/x86_64-linux-gnu/libcudart_static.so failed
attempt to open /usr/lib/x86_64-linux-gnu/cudart_static.a failed
attempt to open /usr/lib/x86_64-linux-gnu64/libcudart_static.so failed
attempt to open /usr/lib/x86_64-linux-gnu64/cudart_static.a failed
attempt to open /usr/local/lib64/libcudart_static.so failed
attempt to open /usr/local/lib64/cudart_static.a failed
attempt to open /lib64/libcudart_static.so failed
attempt to open /lib64/cudart_static.a failed
attempt to open /usr/lib64/libcudart_static.so failed
attempt to open /usr/lib64/cudart_static.a failed
attempt to open /usr/local/lib/libcudart_static.so failed
attempt to open /usr/local/lib/cudart_static.a failed
attempt to open /lib/libcudart_static.so failed
attempt to open /lib/cudart_static.a failed
attempt to open /usr/lib/libcudart_static.so failed
attempt to open /usr/lib/cudart_static.a failed
attempt to open /usr/x86_64-linux-gnu/lib64/libcudart_static.so failed
attempt to open /usr/x86_64-linux-gnu/lib64/cudart_static.a failed
attempt to open /usr/x86_64-linux-gnu/lib/libcudart_static.so failed
attempt to open /usr/x86_64-linux-gnu/lib/cudart_static.a failed

有人可以帮忙吗？

Answer 1

所以我找到了解决方案。显然，接头无法找到libcudart二进制。因此，用于找到其位置的方法：

find /usr/ -name libcudart_static*

获取其路径为：（

/usr/local/cuda-11.6/targets/x86_64-linux/lib/libcudart_static.a

对您来说可能有所不同）。

只是通过在编译命令中使用-l标志链接了此路径。
新命令：

clang++ axpy.cu -o exec --cuda-gpu-arch=sm_60 -L/usr/local/cuda -L/usr/local/cuda-11.6/targets/x86_64-linux/lib/ -lcudart_static -ldl -lrt -pthread

Answer 2

我个人认为链接无法找到“ LIB”文件夹。在x86_64体系结构中，您必须查找lib64。
因此，您的命令看起来如下：

clang++ axpy.cu -o exec --cuda-gpu-arch=sm_60 -L/usr/local/cuda/lib64 -lcudart_static -ldl -lrt -pthread

在您的答案中，链接器找不到名为“ lib”的文件夹。因此，您需要将链接指向x86_64_lix库。这是一个不必要的步骤（根据我的说法）。