[petsc-dev] nvcc -g3 error

[Satish Balay]

I had changed the default flag for a cuda build from -g3 to
-g. Perhaps you don't have the latest petsc-dev/BuildSystem?

http://petsc.cs.iit.edu/petsc/BuildSystem/rev/05b504243938

BTW: The defualt opt flags can be changed with --COPTFLAGS configure
option.

Satish

On Thu, 12 Apr 2012, Ben Jamroz wrote:

> Hi,
> 
> I've had trouble building a debug version of petsc-dev with nvcc. At compile
> time I was getting the following error.
> 
> ===============================================================
> libfast in: /scr_0/jamroz/petsc-dev-jamroz/src/vec/vec/impls/seq/seqcusp
> nvcc -O3 -g -g -arch=sm_20 -c --compiler-options=-g -O3 -g3 -fno-inline -O0
> -I/scr_0/jamroz/petsc-dev-jamroz/include
> -I/scr_0/jamroz/petsc-dev-jamroz/arch-linux2-c-debug/include
> -I/usr/local/cuda/4.1/cuda/include -I/scr_0/jamroz/gpuPETSc/txpetscgpu/include
> -I/scr_0/jamroz/ -I/usr/local/cuda/4.1/cuda/include/
> -I/usr/mpi/gcc/openmpi-1.4.3/include
> -D__INSDIR__=src/vec/vec/impls/seq/seqcusp/ veccusp.cu
> <built-in>(1): error: "__STDC_HOSTED__" is predefined; attempted redefinition
> ignored
> <built-in>(1): error: "__WCHAR_TYPE__" is predefined; attempted redefinition
> ignored
> <built-in>(1): error: "__x86_64" is predefined; attempted redefinition ignored
> <built-in>(1): error: "__x86_64__" is predefined; attempted redefinition
> ignored
> <built-in>(1): error: "__linux__" is predefined; attempted redefinition
> ignored
> <built-in>(1): error: "__unix__" is predefined; attempted redefinition ignored
> <built-in>(1): error: "unix" is predefined; attempted redefinition ignored
> 7 errors detected in the compilation of
> "/tmp/tmpxft_00006e29_00000000-7_veccusp.cpp3.i".
> /usr/bin/ar: veccusp.o: No such file or directory
> ===============================================================
> 
> It turns out that -g3 (debug level) in the --compiler-options was causing the
> trouble. Commenting out this line in BuildSystem/config/compilerOptions.py
> (line 24) fixed this error. According to
> http://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html the default debug is
> level 2.
> 
> Just a heads up.
> 
> -Ben
> 
> ps. My config script was:
> 
> ./configure --with-debugging=1 --with-mpi=1
> --with-thrust-dir=/usr/local/cuda/4.1/cuda/include/
> --with-cusp-dir=/scr_0/jamroz/ --CFLAGS="-g -O3" --with-cuda=1
> --with-cuda-dir=/usr/local/cuda/4.1/cuda --CUDAFLAGS="-O3 -g"
> --with-cudac=nvcc --with-cuda-arch=sm_20 --with-precision=double
> --with-txpetscgpu=1 --download-txpetscgpu=no
> --with-txpetscgpu-dir=/scr_0/jamroz/gpuPETSc/txpetscgpu
> 
>