gcc:language c++ not recognized nvcc compile error

Accelerated Computing CUDA CUDA Programming and Performance
1

Hi Guys,

I tried to compile a simple cuda code on my mac (version 10.5.8):

  1 #include <stdio.h>      
  2 
  3 __global__ void foo()
  4 {      5 }
  6 
  7 int main()
  8 {
  9   foo<<<1,1>>>();
 10   printf("CUDA error: %s\n", cudaGetErrorString(cudaGetLastE
 10 rror()));  
 11   return 0;
 12 }

$ nvcc test.cu
gcc: language c++ not recognized
gcc: language c++ not recognized
gcc: test.cu: linker input file unused because linking not done
Catastrophic error: cannot open source file “/tmp/tmpxft_00005c75_00000000-4_test.cpp1.ii”

1 catastrophic error detected in the compilation of “/tmp/tmpxft_00005c75_00000000-4_test.cpp1.ii”.
Compilation terminated.

I do have nvcc and gcc installed.
$ nvcc -V
nvcc: NVIDIA ® Cuda compiler driver
Copyright © 2005-2010 NVIDIA Corporation
Built on Thu_Jun_17_16:11:55_PDT_2010
Cuda compilation tools, release 3.1, V0.2.1221

$ gcc -v
Using built-in specs.
Target: i386-apple-darwin9.7.0
Configured with: /eng/upc/bld/upc-4.3.2.4/src/configure --prefix=/usr/local/upc --enable-languages=c,upc --disable-upc-link-script --without-gnu-ld --with-gmp=/opt/local --with-mfpr=/opt/local
Thread model: posix
gcc version 4.3.2 20090617 (dev) (GCC UPC 4.3.2-4) (GCC)

Any suggestion is appreciated.

2

Hello Benetion,

That’s weird. Did you install GCC by yourself or are you using the one that comes when you install Xcode?

Also, have you tried compiling non-CUDA C++ programs using g++?

Alejandro.-

3

Hello Benetion,

That’s weird. Did you install GCC by yourself or are you using the one that comes when you install Xcode?

Also, have you tried compiling non-CUDA C++ programs using g++?

Alejandro.-

4

Hi Alejandro,

This is not the one with xcode. Yes, g++ works fine.

After changing back to xcode gcc, nvcc seems fine now. Thanks!

5

Hi Alejandro,

This is not the one with xcode. Yes, g++ works fine.

After changing back to xcode gcc, nvcc seems fine now. Thanks!

6

You’ve got a custom-build gcc version where C++ support has been switched off. However, CUDA uses C++ mode to implement its language extensions, even if you select C as language. As you figured out, switching to the gcc supplied with Xcode solves the problem, as would a custom gcc install with C++ enabled.

7

You’ve got a custom-build gcc version where C++ support has been switched off. However, CUDA uses C++ mode to implement its language extensions, even if you select C as language. As you figured out, switching to the gcc supplied with Xcode solves the problem, as would a custom gcc install with C++ enabled.

8

Thanks for the comments.

9

Thanks for the comments.