[llvm-dev] problem on compiling cuda program with clang++

[李阳 via llvm-dev]

Hi all,

I compiled the *llvm3.9* source code on the *Nvidia TX1* board. And now I
am following the document in the docs/CompileCudaWithLLVM.rst to compile
cuda program with clang++.

However, when I compile `axpy.cu` using `nvcc`, *nvcc* can generate the
correct the binary;

while compiling `axpy.cu` using clang++, the detailed command is `clang++
axpy.cu -o axpy --cuda-gpu-arch=sm_53 -L/usr/local/cuda/lib64
-lcudart_static -ldl -lrt -pthread`, *clang++* generate the following
error:`/usr/include/features.h:367:12: fatal error: 'sys/cdefs.h' file not
found
#  include <sys/cdefs.h>`.

And I find that 'sys/cdefs.h' is included in the directory
`/usr/include/aarch64-linux-gnu/sys`.

Anybody ever came accross the same problems? Thanks!
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