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# BSD 3-Clause License; see https://github.com/scikit-hep/awkward-1.0/blob/main/LICENSE
cmake_minimum_required(VERSION 3.15...3.30)
if(NOT DEFINED SKBUILD)
set(SKBUILD_PROJECT_NAME awkward_cpp)
set(SKBUILD_PROJECT_VERSION 0.0.0)
endif()
# Project must be near the top
project(
${SKBUILD_PROJECT_NAME}
LANGUAGES CXX
VERSION ${SKBUILD_PROJECT_VERSION})
message(STATUS "CMake version ${CMAKE_VERSION}")
message(STATUS "CMAKE_BUILD_TYPE = ${CMAKE_BUILD_TYPE}")
if(CMAKE_CXX_COMPILER_ID MATCHES AppleClang AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL
15)
if(CMAKE_VERSION VERSION_LESS 3.29)
message(WARNING "CMake should be 3.29+ to support AppleClang 15+. Trying anyway.")
endif()
set(CMAKE_LINKER_TYPE APPLE_CLASSIC)
endif()
# Check for header-only libraries
if(NOT (EXISTS "header-only" AND EXISTS "include/awkward/kernels.h"))
message(
FATAL_ERROR
"\
awkward-cpp relies upon generated and copied artefacts such as the header-only libraries and generated kernel headers. \
These could not be found, which indicates that\n\n\
nox -s prepare\
\n\nwas skipped or failed. \
Please check https://github.com/scikit-hep/awkward#installation-for-developers to learn more about this process.\
")
endif()
# Setup the RPATH for built libraries
if(APPLE)
set(CMAKE_INSTALL_RPATH "@loader_path")
else()
set(CMAKE_INSTALL_RPATH "\$ORIGIN")
endif()
set(CMAKE_BUILD_RPATH_USE_ORIGIN TRUE)
# Three tiers: [cpu-kernels (extern "C" interface), cuda-kernels (extern "C" interface)],
# libawkward (C++), and Python modules.
file(GLOB CPU_KERNEL_SOURCES CONFIGURE_DEPENDS "src/cpu-kernels/*.cpp")
file(GLOB_RECURSE LIBAWKWARD_SOURCES CONFIGURE_DEPENDS "src/libawkward/*.cpp")
# Shared properties
add_library(awkward-parent INTERFACE)
target_compile_definitions(awkward-parent INTERFACE VERSION_INFO="${SKBUILD_PROJECT_VERSION}")
target_include_directories(awkward-parent INTERFACE include)
target_compile_features(awkward-parent INTERFACE cxx_std_17)
# C++ dependencies (header-only): RapidJSON
target_include_directories(awkward-parent INTERFACE rapidjson/include)
# C++ dependencies (header-only): GrowableBuffer
add_subdirectory(header-only EXCLUDE_FROM_ALL)
target_link_libraries(awkward-parent INTERFACE awkward::growable-buffer)
# WASM needs exceptions enabled
if(CMAKE_SYSTEM_NAME MATCHES Emscripten)
set_property(
TARGET awkward-parent
APPEND
PROPERTY INTERFACE_LINK_OPTIONS -fexceptions)
set_property(
TARGET awkward-parent
APPEND
PROPERTY INTERFACE_COMPILE_OPTIONS -fexceptions)
endif()
# First tier: cpu-kernels
add_library(awkward-cpu-kernels SHARED ${CPU_KERNEL_SOURCES})
target_link_libraries(awkward-cpu-kernels PUBLIC awkward-parent)
set_target_properties(
awkward-cpu-kernels
PROPERTIES CXX_VISIBILITY_PRESET hidden
VISIBILITY_INLINES_HIDDEN ON
CXX_EXTENSIONS NO)
# Second tier: libawkward
add_library(awkward SHARED ${LIBAWKWARD_SOURCES})
if(${CMAKE_CXX_COMPILER_ID} MATCHES "Clang")
# Avoid emitting vtables in the dependent libraries
target_compile_options(
awkward
PRIVATE -Werror=weak-vtables
-Wweak-vtables
-Wshorten-64-to-32
-Wsign-compare
-Wsign-conversion
-Wshift-sign-overflow
-Wreorder
-Wrange-loop-analysis
-Wconversion
-Wunused)
endif()
target_link_libraries(awkward PUBLIC awkward-parent)
set_target_properties(
awkward
PROPERTIES CXX_VISIBILITY_PRESET hidden
VISIBILITY_INLINES_HIDDEN ON
CXX_EXTENSIONS NO)
# Third tier: Python modules.
find_package(Python REQUIRED COMPONENTS Interpreter Development.Module)
find_package(pybind11 CONFIG REQUIRED)
# Install python bindings
file(GLOB LAYOUT_SOURCES "src/python/*.cpp")
pybind11_add_module(_ext MODULE ${LAYOUT_SOURCES})
target_link_libraries(_ext PRIVATE awkward)
set_target_properties(
_ext
PROPERTIES CXX_VISIBILITY_PRESET hidden
VISIBILITY_INLINES_HIDDEN ON
CXX_EXTENSIONS NO)
# This has to be passed explicitly to make Pyodide 0.28 happy
if(CMAKE_SYSTEM_NAME MATCHES Emscripten)
target_link_options(_ext PRIVATE "-Wl,-rpath=\$ORIGIN")
endif()
# Install pure-python files
file(GLOB_RECURSE PYTHON_SOURCES "src/${SKBUILD_PROJECT_NAME}/*.py")
install(
TARGETS awkward awkward-parent awkward-cpu-kernels _ext
LIBRARY DESTINATION "${SKBUILD_PROJECT_NAME}/lib"
RUNTIME DESTINATION "${SKBUILD_PROJECT_NAME}/lib"
ARCHIVE DESTINATION "${SKBUILD_PROJECT_NAME}/lib")
install(FILES ${PYTHON_SOURCES} DESTINATION ${SKBUILD_PROJECT_NAME})
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