gpu: add empty library for GPU-related stuff

fpga/lib/CMakeLists.txt

@@ -1,4 +1,5 @@
 add_subdirectory(common)
+add_subdirectory(gpu)
 
 set(SOURCES
 	vlnv.cpp
@@ -35,6 +36,7 @@ find_package(Threads)
 add_library(villas-fpga SHARED ${SOURCES})
 
 target_link_libraries(villas-fpga PUBLIC villas-common)
+target_link_libraries(villas-fpga PUBLIC villas-gpu)
 
 target_compile_definitions(villas-fpga PRIVATE
 	BUILDID=\"abc\"

fpga/lib/gpu/CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 3.7)
+
+project(villas-gpu
+	VERSION 1.0
+	DESCRIPTION "VILLASgpu"
+	LANGUAGES C CXX)
+
+# fail if CUDA not found
+find_package(CUDA QUIET REQUIRED)
+
+cuda_add_library(villas-gpu SHARED gpu.cpp)
+
+target_include_directories(villas-gpu
+	PUBLIC ${CMAKE_CURRENT_LIST_DIR}/include)

fpga/lib/gpu/gpu.cpp

@@ -0,0 +1,7 @@
+#include <villas/gpu.hpp>
+
+namespace villas {
+namespace gpu {
+
+} // namespace villas
+} // namespace gpu

fpga/lib/gpu/include/villas/gpu.hpp

@@ -0,0 +1,7 @@
+#pragma once
+
+namespace villas {
+namespace gpu {
+
+} // namespace villas
+} // namespace gpu