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cmake_minimum_required(VERSION 3.18 FATAL_ERROR)
project(c10 CXX)
set(CMAKE_CXX_STANDARD 17 CACHE STRING "The C++ standard whose features are requested to build this target.")
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
# Main build file for the C10 library.
#
# Note that the C10 library should maintain minimal dependencies - especially,
# it should not depend on any library that is implementation specific or
# backend specific. It should in particular NOT be dependent on any generated
# protobuf header files, because protobuf header files will transitively force
# one to link against a specific protobuf version.
if(BUILD_LIBTORCHLESS)
find_library(C10_LIB c10 PATHS $ENV{LIBTORCH_LIB_PATH} NO_DEFAULT_PATH)
else()
set(C10_LIB c10)
endif()
# ---[ Configure macro file.
set(C10_USE_GFLAGS ${USE_GFLAGS}) # used in cmake_macros.h.in
set(C10_USE_GLOG ${USE_GLOG}) # used in cmake_macros.h.in
set(C10_BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS}) # used in cmake_macros.h.in
set(C10_USE_NUMA ${USE_NUMA})
set(C10_USE_MSVC_STATIC_RUNTIME ${CAFFE2_USE_MSVC_STATIC_RUNTIME})
set(C10_USE_ROCM_KERNEL_ASSERT ${USE_ROCM_KERNEL_ASSERT})
configure_file(
${CMAKE_CURRENT_LIST_DIR}/macros/cmake_macros.h.in
${CMAKE_BINARY_DIR}/c10/macros/cmake_macros.h)
# Note: if you want to add ANY dependency to the c10 library, make sure you
# check with the core PyTorch developers as the dependency will be
# transitively passed on to all libraries dependent on PyTorch.
file(GLOB C10_SRCS
*.cpp
core/*.cpp
core/impl/*.cpp
mobile/*.cpp
macros/*.cpp
util/*.cpp
)
file(GLOB C10_HEADERS
*.h
core/*.h
core/impl/*.h
mobile/*.h
macros/*.h
util/*.h
)
if(NOT BUILD_LIBTORCHLESS)
add_library(c10 ${C10_SRCS} ${C10_HEADERS})
target_compile_options_if_supported(c10 "-Wdeprecated")
if(HAVE_SOVERSION)
set_target_properties(c10 PROPERTIES
VERSION ${TORCH_VERSION} SOVERSION ${TORCH_SOVERSION})
endif()
# If building shared library, set dllimport/dllexport proper.
target_compile_options(c10 PRIVATE "-DC10_BUILD_MAIN_LIB")
# Enable hidden visibility if compiler supports it.
if(${COMPILER_SUPPORTS_HIDDEN_VISIBILITY})
target_compile_options(c10 PRIVATE "-fvisibility=hidden")
endif()
option(C10_USE_IWYU "Use include-what-you-use to clean up header inclusion" OFF)
if(C10_USE_IWYU)
find_program(iwyu NAMES include-what-you-use)
if(iwyu)
set(iwyu_cmd
"include-what-you-use"
"-Xiwyu"
"--transitive_includes_only"
"-Xiwyu"
"--no_fwd_decls"
"-Xiwyu"
"--prefix_header_includes=keep"
"-Xiwyu"
"--mapping_file=${CMAKE_CURRENT_LIST_DIR}/../tools/iwyu/all.imp"
)
set_property(TARGET c10 PROPERTY CXX_INCLUDE_WHAT_YOU_USE ${iwyu_cmd})
endif()
endif()
if(WERROR)
target_compile_options_if_supported(c10 PRIVATE "-Werror=sign-compare")
target_compile_options_if_supported(c10 PRIVATE "-Werror=shadow")
endif()
# ---[ Dependency of c10
if(C10_USE_GFLAGS)
target_link_libraries(c10 PUBLIC gflags)
endif()
if(C10_USE_GLOG)
target_link_libraries(c10 PUBLIC glog::glog)
endif()
target_link_libraries(c10 PRIVATE fmt::fmt-header-only)
target_link_libraries(c10 PRIVATE nlohmann)
if(C10_USE_NUMA)
message(STATUS "NUMA paths:")
message(STATUS ${Numa_INCLUDE_DIR})
message(STATUS ${Numa_LIBRARIES})
target_include_directories(c10 PRIVATE ${Numa_INCLUDE_DIR})
target_link_libraries(c10 PRIVATE ${Numa_LIBRARIES})
else()
message(STATUS "don't use NUMA")
endif()
if(NOT CMAKE_SYSTEM_PROCESSOR MATCHES "s390x" AND NOT CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64le")
target_link_libraries(c10 PRIVATE cpuinfo)
endif()
find_package(Backtrace)
if(Backtrace_FOUND)
target_include_directories(c10 PRIVATE ${Backtrace_INCLUDE_DIRS})
target_link_libraries(c10 PRIVATE ${Backtrace_LIBRARIES})
target_compile_definitions(c10 PRIVATE SUPPORTS_BACKTRACE=1)
else()
target_compile_definitions(c10 PRIVATE SUPPORTS_BACKTRACE=0)
endif()
if(USE_MIMALLOC)
target_link_libraries(c10 PRIVATE "mimalloc-static")
add_dependencies(c10 mimalloc-static)
endif()
if(LINUX)
target_link_libraries(c10 PRIVATE Threads::Threads)
target_link_libraries(c10 PRIVATE dl)
endif()
if(ANDROID)
target_link_libraries(c10 PRIVATE log)
endif()
target_include_directories(
c10 PUBLIC
$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../>
$<BUILD_INTERFACE:${CMAKE_BINARY_DIR}>
$<INSTALL_INTERFACE:include>)
endif()
add_subdirectory(test)
add_subdirectory(benchmark)
if(USE_CUDA)
add_subdirectory(cuda)
endif()
if(USE_ROCM)
# NB: This directory is generated by the HIPIFY script; it's
# not checked in
add_subdirectory(hip)
endif()
if(USE_XPU)
add_subdirectory(xpu)
endif()
if(NOT BUILD_LIBTORCHLESS)
# ---[ Installation
# Note: for now, we will put all export path into one single Caffe2Targets group
# to deal with the cmake deployment need. Inside the Caffe2Targets set, the
# individual libraries like libc10.so and libcaffe2.so are still self-contained.
install(TARGETS c10 EXPORT Caffe2Targets DESTINATION lib)
endif()
install(DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
DESTINATION include
FILES_MATCHING PATTERN "*.h")
install(FILES ${CMAKE_BINARY_DIR}/c10/macros/cmake_macros.h
DESTINATION include/c10/macros)
if(MSVC AND C10_BUILD_SHARED_LIBS)
install(FILES $<TARGET_PDB_FILE:c10> DESTINATION lib OPTIONAL)
endif()
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