[cfe-dev] Error : clang (8.0) *unknown arch 0xe0* for Ubuntu 18.04

[Chris Bieneman via cfe-dev]

I don't really have enough information to know for sure, but it looks like your clang was installed for cuda. It is reporting the default target as amdgcn, which is a GPU. So it looks like you're compiling your test program for the GPU then trying to run it on the CPU.

If you want to build CPU code, I would suggest installing a new clang distribution to get a compiler that has the host as its default target.

-Chris

> On Jun 20, 2019, at 4:55 AM, Srinivas Kakarla1 via cfe-dev <cfe-dev at lists.llvm.org> wrote:
> 
> Hi ,
> 
> Here is the below error, Can you please analyze and provide the solution or suggestion for below problem. 
> 
> Error : clang (8.0) *unknown arch 0xe0* for Ubuntu 18.04
> 
> clang -v
> clang version 8.0 
> Target: amdgcn-unknown-amdhsa
> Thread model: posix
> InstalledDir: /usr/bin
> Found CUDA installation: /usr/local/cuda-10.0, version 10.0
> 
> lsb_release -a
> No LSB modules are available.
> Distributor ID:    Ubuntu
> Description:    Ubuntu 18.04.2 LTS
> Release:    18.04
> Codename:    bionic
> 
> $ cat t.c
> #include <stdio.h>
> 
> int main(int argc, char *argv[]) 
> { 
> printf("hello world\n"); 
> }
> 
> $ clang t.c -o test
> In file included from t.c:1:
> /usr/include/stdio.h:33:10: fatal error: 'stddef.h' file not found
> #include <stddef.h>
>          ^~~~~~~~~~
> 1 error generated.
> 
> $ clang t.c -o test  -isystem /usr/lib/llvm-5.0/lib/clang/5.0.1/include/
> 
> $ ./test 
> -bash: ./test: cannot execute binary file: Exec format error
> 
> $ file test 
> test: ELF 64-bit LSB shared object, *unknown arch 0xe0* version 1, dynamically linked, not stripped
> 
>  
> Thank you.
> 
> 
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