CMake-based build of CUDA app fails - no files passed to linker - c++

Question

I'm trying to use CMake with a CUDA project of mine, but I'm having trouble getting it to build the executable when compiled on a system that has a CUDA-enabled device.
The CMakeLists.txt in question is below. It supports systems with and without CUDA-enabled devices, and builds just fine on my Macbook which doesn't have CUDA.
cmake_minimum_required (VERSION 2.8)
message(STATUS "CMake version: ${CMAKE_VERSION}")
project(stockModel)
# Grab the CUDA package
find_package(CUDA)
set(GPU_ACCELERATED ${CUDA_FOUND})
# Set directory and compilation flags for both g++ and nvcc
set(CMAKE_BINARY_DIR ${CMAKE_CURRENT_SOURCE_DIR})
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -pthread")
set(CUDA_NVCC_FLAGS "${CUDA_NVCC_FLAGS}
-gencode arch=compute_50,code=sm_50; -std=c++11; -lcurand;"
)
set(CUDA_PROPAGATE_HOST_FLAGS off)
# Add directories
include_directories(${CMAKE_CURRENT_SOURCE_DIR}/build/)
include_directories(${CMAKE_CURRENT_SOURCE_DIR}/core/)
if (${GPU_ACCELERATED})
include_directories(${CMAKE_CURRENT_SOURCE_DIR}/support/)
endif()
# Setup environments, depending on GPU accel. status
set(SRCS build/main.cpp core/callModels.cpp)
set(INCS core/callModels.h)
if (${GPU_ACCELERATED})
set(SRCS ${SRCS} support/prng.cu support/debugCFP.cu)
set(INCS ${INCS} support/prng.h support/debugCFP.h)
set_source_files_properties(${CMAKE_CURRENT_SOURCE_DIR}/core/callModels.cpp
PROPERTIES CUDA_SOURCE_PROPERTY_FORMAT OBJ
)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}
-L/usr/local/cuda/lib64 -lcuda -lcudart"
)
endif()
# Create executable
message(STATUS "Sources: ${SRCS}")
message(STATUS "Includes: ${INCS}")
cuda_add_executable(stockModel ${SRCS} ${INCS})
The error I get when I attempt to build on my Jetson TX1 is as follows:
...
[ 80%] Building CXX object CMakeFiles/stockModel.dir/main.cpp.o
[100%] Linking CXX executable stockModel
c++: fatal error: no input files
compilation terminated.
...
Any ideas as to what is going wrong here? Obviously it has something to do with the CUDA 'extras', but I'm at a loss as to what is causing this.
Let me know if you need more details.
Here is the relevant part of the verbose output:
...
[100%] Linking CXX executable stockModel
/usr/local/bin/cmake -E cmake_link_script CMakeFiles/stockModel.dir/link.txt --verbose=1
/usr/bin/c++ -std=c++11 -pthread
c++: fatal error: no input files
compilation terminated.
I've uploaded the full make VERBOSE=1 output to this gist on GitHub.

Answer 1

CMake is sometimes finicky about spaces and list combinations. I know that doesn't sound like much of an explanation, but I'm not much of an expert.
What you need to do is replace this:
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}
-L/usr/local/cuda/lib64 -lcuda -lcudart"
with this:
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -L/usr/local/cuda/lib64 -lcuda -lcudart")
(single line). That should do it. At least - it does on my system (I created dummy source files with your files' names to try this out).