[petsc-dev] nvcc -g3 error

[Ben Jamroz]

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

-- 
Ben Jamroz jamroz at txcorp.com
Tech-X Corporation
5621 Arapahoe Ave, Suite A
Boulder, CO 80303
Phone: (720) 974-1853, Fax: (303) 448-7756