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Remove CUDA headers and generate stubs in runtime (NVIDIA#2420)
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- removes files that should not be in the repo due to license
- adds a step that generates dynlink_cuda during the build based on the available headers

Signed-off-by: Janusz Lisiecki <[email protected]>
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JanuszL authored Nov 10, 2020
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233 changes: 233 additions & 0 deletions Acknowledgements.txt
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16 changes: 16 additions & 0 deletions cmake/Utils.cmake
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Expand Up @@ -374,3 +374,19 @@ function(build_per_python_lib)
endforeach(PYVER)

endfunction()

# get default compiler include paths, needed by the stub generator
# starting from 3.14.0 CMake will have that inside CMAKE_${LANG}_IMPLICIT_INCLUDE_DIRECTORIES
macro(DETERMINE_GCC_SYSTEM_INCLUDE_DIRS _lang _compiler _flags _result)
file(WRITE "${CMAKE_BINARY_DIR}/CMakeFiles/dummy" "\n")
separate_arguments(_buildFlags UNIX_COMMAND "${_flags}")
execute_process(COMMAND ${_compiler} ${_buildFlags} -v -E -x ${_lang} -dD dummy
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/CMakeFiles OUTPUT_QUIET
ERROR_VARIABLE _gccOutput)
file(REMOVE "${CMAKE_BINARY_DIR}/CMakeFiles/dummy")
if ("${_gccOutput}" MATCHES "> search starts here[^\n]+\n *(.+) *\n *End of (search) list")
set(${_result} ${CMAKE_MATCH_1})
string(REPLACE "\n" " " ${_result} "${${_result}}")
separate_arguments(${_result})
endif ()
endmacro()
1 change: 1 addition & 0 deletions conda/recipe/meta.yaml
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Expand Up @@ -60,6 +60,7 @@ requirements:
- cmake >=3.12.4
- make
- patchelf
- python-clang
host:
- python
- future >=0.17.1
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30 changes: 28 additions & 2 deletions dali/core/CMakeLists.txt
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Expand Up @@ -18,13 +18,39 @@ project(dali_core CUDA CXX C)
collect_headers(DALI_INST_HDRS PARENT_SCOPE)
collect_sources(DALI_CORE_SRCS)
collect_test_sources(DALI_CORE_TEST_SRCS)

# transform a list of paths into a list of include directives
DETERMINE_GCC_SYSTEM_INCLUDE_DIRS("c++" "${CMAKE_CXX_COMPILER}" "${CMAKE_CXX_FLAGS}" INFERED_COMPILER_INCLUDE)
set(DEFAULT_COMPILER_INCLUDE)
foreach(incl_dir ${INFERED_COMPILER_INCLUDE})
set(DEFAULT_COMPILER_INCLUDE "${DEFAULT_COMPILER_INCLUDE} -I${incl_dir}")
endforeach(incl_dir)
separate_arguments(DEFAULT_COMPILER_INCLUDE UNIX_COMMAND "${DEFAULT_COMPILER_INCLUDE}")

set(CUDA_GENERATED_STUB "${CMAKE_CURRENT_BINARY_DIR}/dynlink_cuda_gen.cc")
add_custom_command(
OUTPUT ${CUDA_GENERATED_STUB}
COMMAND python ${CMAKE_SOURCE_DIR}/tools/stub_generator/stub_codegen.py --unique_prefix=Cuda --
"${CMAKE_SOURCE_DIR}/tools/stub_generator/cuda.json" ${CUDA_GENERATED_STUB}
"${CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES}/cuda.h" "-I${CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES}"
# for some reason QNX fails with 'too many errors emitted' is this is not set
"-ferror-limit=0"
${DEFAULT_COMPILER_INCLUDE}
DEPENDS ${CMAKE_SOURCE_DIR}/tools/stub_generator/stub_codegen.py
"${CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES}/cuda.h"
"${CMAKE_SOURCE_DIR}/tools/stub_generator/cuda.json"
COMMENT "Running cuda.h stub generator"
VERBATIM)

set_source_files_properties(${CUDA_GENERATED_STUB} PROPERTIES GENERATED TRUE)

list(REMOVE_ITEM DALI_CORE_SRCS dynlink_cuda.cc)

add_library(dynlink_cuda STATIC dynlink_cuda.cc)
add_library(dynlink_cuda STATIC dynlink_cuda.cc ${CUDA_GENERATED_STUB})

add_library(dali_core ${LIBTYPE} ${DALI_CORE_SRCS})
target_include_directories(dali_core PUBLIC ${CMAKE_CUDA_TOOLKIT_INCLUDE_DIRECTORIES})
target_link_libraries(dali_core PRIVATE ${CUDART_LIB})
target_link_libraries(dali_core PRIVATE ${CUDART_LIB} dynlink_cuda)
target_link_libraries(dali_core PUBLIC ${DALI_SYSTEM_LIBS})
target_link_libraries(dali_core PRIVATE "-Wl,--exclude-libs,${exclude_libs}")
set_target_properties(dali_core PROPERTIES
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