cuda: remove arch specific flag; add /lib64 to LIBPATH for libcuda.so for most Linux systems

components/zerodop/GPUampcor/cuda/SConscript

@@ -49,7 +49,7 @@ if envGPUampcor['GPU_ACC_ENABLED']:
         build_base += "-ccbin " + envGPUampcor['NVCC_CCBIN'] + " "
     else:
         print('Assuming default system compiler for nvcc.')
-    build_base += "-arch=sm_35 -shared -Xcompiler -fPIC -O3 "
+    build_base += "-shared -Xcompiler -fPIC -O3 "
     build_cmd = build_base + "-dc -m64 -o $TARGET -c $SOURCE"
     built_path = os.path.join(build, 'gpu-ampcor.o')
     linked_path = os.path.join(build, 'gpu-ampcor-linked.o')

components/zerodop/GPUtopozero/cuda/compilation

@@ -1,2 +1,2 @@
-nvcc -arch=sm_35 -Xcompiler -fPIC -o gpu-topo.o -c Topo.cu
+nvcc -Xcompiler -fPIC -o gpu-topo.o -c Topo.cu
 cp -f gpu-topo.o ..

scons_tools/cuda.py

@@ -52,7 +52,7 @@ def generate(env):
     # default flags for the NVCC compiler
     env['STATICNVCCFLAGS'] = ''
     env['SHAREDNVCCFLAGS'] = ''
-    env['ENABLESHAREDNVCCFLAG'] = '-arch=sm_35 -shared -Xcompiler -fPIC'
+    env['ENABLESHAREDNVCCFLAG'] = '-shared -Xcompiler -fPIC'
 
     # default NVCC commands
     env['STATICNVCCCMD'] = '$NVCC -o $TARGET -c $NVCCFLAGS $STATICNVCCFLAGS $SOURCES'
@@ -153,7 +153,7 @@ def generate(env):
     #env.Append(LIBPATH=[cudaSDKPath + '/lib', cudaSDKPath + '/common/lib' + cudaSDKSubLibDir, cudaToolkitPath + '/lib'])
 
     env.Append(CUDACPPPATH=[cudaToolkitPath + '/include'])
-    env.Append(CUDALIBPATH=[cudaToolkitPath + '/lib', cudaToolkitPath + '/lib64'])
+    env.Append(CUDALIBPATH=[cudaToolkitPath + '/lib', cudaToolkitPath + '/lib64', '/lib64'])
     env.Append(CUDALIBS=['cudart'])
 
 def exists(env):