Adding the soft link should be part of build

Without the "CUDA --> ../src/CUDA" soft link running e.g. "test_integrator_cuda" will yield
"
...
Cannot open source file: CUDA/kernels.ptx
Checking for compiled in version of file: CUDA/kernels.ptx
Found compiled in version of file: CUDA/kernels.ptx
Cannot open source file: CUDA/kernels.ptx
Checking for compiled in version of file: CUDA/kernels.ptx
Found compiled in version of file: CUDA/kernels.ptx
Cannot open source file: CUDA/kernels.ptx
Checking for compiled in version of file: CUDA/kernels.ptx
Found compiled in version of file: CUDA/kernels.ptx
Cannot open source file: CUDA/kernels.ptx
Checking for compiled in version of file: CUDA/kernels.ptx
Found compiled in version of file: CUDA/kernels.ptx
Kernel files found .. building compute kernels!
Creating kernel: dev_copy_particles
...
"
although the computations will be performed.

If the soft link is added as part of "make" this "delay" will not occur and running "test_integrator_cuda" will yield
"
...
Kernel files found .. building compute kernels!
Creating kernel: dev_copy_particles
...
"

Author: HannoSpreeuw

tests/Makefile

@@ -34,7 +34,7 @@ OBJ = $(SRC:%.cpp=%.o)
 
 PROG = test_gravity_block_cuda test_gravity_block_g5_cuda test_gravity_block_6th_cuda test_performance_rangeN_cuda test_performance_blockStep_cuda test_performance_rangeN_6th_cuda test_performance_rangeN_g5_cuda test_integrator_cuda
 
-all: $(OBJ) $(PROG)
+all: $(OBJ) $(PROG) kernels
 
 
 kernels: