1################################################################################ 2# Python modules 3# MLIR's Python modules are both directly used by the core project and are 4# available for use and embedding into external projects (in their own 5# namespace and with their own deps). In order to facilitate this, python 6# artifacts are split between declarations, which make a subset of 7# things available to be built and "add", which in line with the normal LLVM 8# nomenclature, adds libraries. 9################################################################################ 10 11# Function: declare_mlir_python_sources 12# Declares pure python sources as part of a named grouping that can be built 13# later. 14# Arguments: 15# ROOT_DIR: Directory where the python namespace begins (defaults to 16# CMAKE_CURRENT_SOURCE_DIR). For non-relocatable sources, this will 17# typically just be the root of the python source tree (current directory). 18# For relocatable sources, this will point deeper into the directory that 19# can be relocated. For generated sources, can be relative to 20# CMAKE_CURRENT_BINARY_DIR. Generated and non generated sources cannot be 21# mixed. 22# ADD_TO_PARENT: Adds this source grouping to a previously declared source 23# grouping. Source groupings form a DAG. 24# SOURCES: List of specific source files relative to ROOT_DIR to include. 25# SOURCES_GLOB: List of glob patterns relative to ROOT_DIR to include. 26# DEST_PREFIX: Destination prefix to prepend to files in the python 27# package directory namespace. 28function(declare_mlir_python_sources name) 29 cmake_parse_arguments(ARG 30 "" 31 "ROOT_DIR;ADD_TO_PARENT;DEST_PREFIX" 32 "SOURCES;SOURCES_GLOB" 33 ${ARGN}) 34 35 if(NOT ARG_ROOT_DIR) 36 set(ARG_ROOT_DIR "${CMAKE_CURRENT_SOURCE_DIR}") 37 endif() 38 set(_install_destination "src/python/${name}") 39 40 # Process the glob. 41 set(_glob_sources) 42 if(ARG_SOURCES_GLOB) 43 set(_glob_spec ${ARG_SOURCES_GLOB}) 44 list(TRANSFORM _glob_spec PREPEND "${ARG_ROOT_DIR}/") 45 file(GLOB_RECURSE _glob_sources 46 RELATIVE "${ARG_ROOT_DIR}" 47 ${_glob_spec} 48 ) 49 list(APPEND ARG_SOURCES ${_glob_sources}) 50 endif() 51 52 # We create a custom target to carry properties and dependencies for 53 # generated sources. 54 add_library(${name} INTERFACE) 55 set(_file_depends "${ARG_SOURCES}") 56 list(TRANSFORM _file_depends PREPEND "${ARG_ROOT_DIR}/") 57 set_target_properties(${name} PROPERTIES 58 # Yes: Leading-lowercase property names are load bearing and the recommended 59 # way to do this: https://gitlab.kitware.com/cmake/cmake/-/issues/19261 60 # Note that ROOT_DIR and FILE_DEPENDS are not exported because they are 61 # only relevant to in-tree uses. 62 EXPORT_PROPERTIES "mlir_python_SOURCES_TYPE;mlir_python_DEST_PREFIX;mlir_python_ROOT_DIR;mlir_python_SOURCES;mlir_python_DEPENDS" 63 mlir_python_SOURCES_TYPE pure 64 mlir_python_ROOT_DIR "${ARG_ROOT_DIR}" 65 mlir_python_DEST_PREFIX "${ARG_DEST_PREFIX}" 66 mlir_python_SOURCES "${ARG_SOURCES}" 67 mlir_python_FILE_DEPENDS "${_file_depends}" 68 mlir_python_DEPENDS "" 69 ) 70 # Note that an "include" directory has no meaning to such faux targets, 71 # but it is a CMake supported way to specify a directory search list in a 72 # way that works both in-tree and out. It has some super powers which are 73 # not possible to emulate with custom properties (because of the prohibition 74 # on using generator expressions in exported custom properties and the 75 # special dispensation for $<INSTALL_PREFIX>). 76 target_include_directories(${name} INTERFACE 77 "$<BUILD_INTERFACE:${ARG_ROOT_DIR}>" 78 "$<INSTALL_INTERFACE:${_install_destination}>" 79 ) 80 81 # Add to parent. 82 if(ARG_ADD_TO_PARENT) 83 set_property(TARGET ${ARG_ADD_TO_PARENT} APPEND PROPERTY mlir_python_DEPENDS ${name}) 84 endif() 85 86 # Install. 87 set_property(GLOBAL APPEND PROPERTY MLIR_EXPORTS ${name}) 88 if(NOT LLVM_INSTALL_TOOLCHAIN_ONLY) 89 _mlir_python_install_sources( 90 ${name} "${ARG_ROOT_DIR}" "${_install_destination}" 91 ${ARG_SOURCES} 92 ) 93 endif() 94endfunction() 95 96# Function: declare_mlir_python_extension 97# Declares a buildable python extension from C++ source files. The built 98# module is considered a python source file and included as everything else. 99# Arguments: 100# ROOT_DIR: Root directory where sources are interpreted relative to. 101# Defaults to CMAKE_CURRENT_SOURCE_DIR. 102# MODULE_NAME: Local import name of the module (i.e. "_mlir"). 103# ADD_TO_PARENT: Same as for declare_mlir_python_sources. 104# SOURCES: C++ sources making up the module. 105# PRIVATE_LINK_LIBS: List of libraries to link in privately to the module 106# regardless of how it is included in the project (generally should be 107# static libraries that can be included with hidden visibility). 108# EMBED_CAPI_LINK_LIBS: Dependent CAPI libraries that this extension depends 109# on. These will be collected for all extensions and put into an 110# aggregate dylib that is linked against. 111function(declare_mlir_python_extension name) 112 cmake_parse_arguments(ARG 113 "" 114 "ROOT_DIR;MODULE_NAME;ADD_TO_PARENT" 115 "SOURCES;PRIVATE_LINK_LIBS;EMBED_CAPI_LINK_LIBS" 116 ${ARGN}) 117 118 if(NOT ARG_ROOT_DIR) 119 set(ARG_ROOT_DIR "${CMAKE_CURRENT_SOURCE_DIR}") 120 endif() 121 set(_install_destination "src/python/${name}") 122 123 add_library(${name} INTERFACE) 124 set_target_properties(${name} PROPERTIES 125 # Yes: Leading-lowercase property names are load bearing and the recommended 126 # way to do this: https://gitlab.kitware.com/cmake/cmake/-/issues/19261 127 # Note that ROOT_DIR and FILE_DEPENDS are not exported because they are 128 # only relevant to in-tree uses. 129 EXPORT_PROPERTIES "mlir_python_SOURCES_TYPE;mlir_python_ROOT_DIR;mlir_python_EXTENSION_MODULE_NAME;mlir_python_CPP_SOURCES;mlir_python_PRIVATE_LINK_LIBS;mlir_python_EMBED_CAPI_LINK_LIBS;mlir_python_DEPENDS" 130 mlir_python_SOURCES_TYPE extension 131 mlir_python_ROOT_DIR "${ARG_ROOT_DIR}" 132 mlir_python_EXTENSION_MODULE_NAME "${ARG_MODULE_NAME}" 133 mlir_python_CPP_SOURCES "${ARG_SOURCES}" 134 mlir_python_PRIVATE_LINK_LIBS "${ARG_PRIVATE_LINK_LIBS}" 135 mlir_python_EMBED_CAPI_LINK_LIBS "${ARG_EMBED_CAPI_LINK_LIBS}" 136 mlir_python_FILE_DEPENDS "" 137 mlir_python_DEPENDS "" 138 ) 139 # Note that an "include" directory has no meaning to such faux targets, 140 # but it is a CMake supported way to specify an install-prefix relative 141 # directory. It has some super powers which are not possible to emulate 142 # with custom properties (because of the prohibition on using generator 143 # expressions in exported custom properties and the special dispensation 144 # for $<INSTALL_PREFIX> and $<INSTALL_INTERFACE>). On imported targets, 145 # this is used as a single value, not as a list, so it must only have one 146 # item in it. 147 target_include_directories(${name} INTERFACE 148 "$<INSTALL_INTERFACE:${_install_destination}>" 149 ) 150 151 # Add to parent. 152 if(ARG_ADD_TO_PARENT) 153 set_property(TARGET ${ARG_ADD_TO_PARENT} APPEND PROPERTY mlir_python_DEPENDS ${name}) 154 endif() 155 156 # Install. 157 set_property(GLOBAL APPEND PROPERTY MLIR_EXPORTS ${name}) 158 if(NOT LLVM_INSTALL_TOOLCHAIN_ONLY) 159 _mlir_python_install_sources( 160 ${name} "${ARG_ROOT_DIR}" "src/python/${name}" 161 ${ARG_SOURCES} 162 ) 163 endif() 164endfunction() 165 166function(_mlir_python_install_sources name source_root_dir destination) 167 foreach(source_relative_path ${ARGN}) 168 # Transform "a/b/c.py" -> "${install_prefix}/a/b" for installation. 169 get_filename_component( 170 dest_relative_path "${source_relative_path}" DIRECTORY 171 BASE_DIR "${source_root_dir}" 172 ) 173 install( 174 FILES "${source_root_dir}/${source_relative_path}" 175 DESTINATION "${destination}/${dest_relative_path}" 176 COMPONENT "${name}" 177 ) 178 endforeach() 179 get_target_export_arg(${name} MLIR export_to_mlirtargets UMBRELLA mlir-libraries) 180 install(TARGETS ${name} 181 COMPONENT ${name} 182 ${export_to_mlirtargets} 183 ) 184endfunction() 185 186# Function: add_mlir_python_modules 187# Adds python modules to a project, building them from a list of declared 188# source groupings (see declare_mlir_python_sources and 189# declare_mlir_python_extension). One of these must be called for each 190# packaging root in use. 191# Arguments: 192# ROOT_PREFIX: The directory in the build tree to emit sources. This will 193# typically be something like ${MY_BINARY_DIR}/python_packages/foobar 194# for non-relocatable modules or a deeper directory tree for relocatable. 195# INSTALL_PREFIX: Prefix into the install tree for installing the package. 196# Typically mirrors the path above but without an absolute path. 197# DECLARED_SOURCES: List of declared source groups to include. The entire 198# DAG of source modules is included. 199# COMMON_CAPI_LINK_LIBS: List of dylibs (typically one) to make every 200# extension depend on (see mlir_python_add_common_capi_library). 201function(add_mlir_python_modules name) 202 cmake_parse_arguments(ARG 203 "" 204 "ROOT_PREFIX;INSTALL_PREFIX;COMMON_CAPI_LINK_LIBS" 205 "DECLARED_SOURCES" 206 ${ARGN}) 207 # Helper to process an individual target. 208 function(_process_target modules_target sources_target) 209 get_target_property(_source_type ${sources_target} mlir_python_SOURCES_TYPE) 210 211 get_target_property(_python_root_dir ${sources_target} mlir_python_ROOT_DIR) 212 if(NOT _python_root_dir) 213 message(FATAL_ERROR "Target ${sources_target} lacks mlir_python_ROOT_DIR property") 214 endif() 215 216 if(_source_type STREQUAL "pure") 217 # Pure python sources to link into the tree. 218 get_target_property(_python_sources ${sources_target} mlir_python_SOURCES) 219 get_target_property(_specified_dest_prefix ${sources_target} mlir_python_DEST_PREFIX) 220 foreach(_source_relative_path ${_python_sources}) 221 set(_dest_relative_path "${_source_relative_path}") 222 if(_specified_dest_prefix) 223 set(_dest_relative_path "${_specified_dest_prefix}/${_dest_relative_path}") 224 endif() 225 set(_src_path "${_python_root_dir}/${_source_relative_path}") 226 set(_dest_path "${ARG_ROOT_PREFIX}/${_dest_relative_path}") 227 228 get_filename_component(_dest_dir "${_dest_path}" DIRECTORY) 229 get_filename_component(_install_path "${ARG_INSTALL_PREFIX}/${_dest_relative_path}" DIRECTORY) 230 231 file(MAKE_DIRECTORY "${_dest_dir}") 232 add_custom_command( 233 TARGET ${modules_target} PRE_BUILD 234 COMMENT "Copying python source ${_src_path} -> ${_dest_path}" 235 DEPENDS "${_src_path}" 236 BYPRODUCTS "${_dest_path}" 237 COMMAND "${CMAKE_COMMAND}" -E create_symlink 238 "${_src_path}" "${_dest_path}" 239 ) 240 install( 241 FILES "${_src_path}" 242 DESTINATION "${_install_path}" 243 COMPONENT ${modules_target} 244 ) 245 endforeach() 246 elseif(_source_type STREQUAL "extension") 247 # Native CPP extension. 248 get_target_property(_module_name ${sources_target} mlir_python_EXTENSION_MODULE_NAME) 249 get_target_property(_cpp_sources ${sources_target} mlir_python_CPP_SOURCES) 250 get_target_property(_private_link_libs ${sources_target} mlir_python_PRIVATE_LINK_LIBS) 251 # Transform relative source to based on root dir. 252 list(TRANSFORM _cpp_sources PREPEND "${_python_root_dir}/") 253 set(_extension_target "${name}.extension.${_module_name}.dso") 254 add_mlir_python_extension(${_extension_target} "${_module_name}" 255 INSTALL_COMPONENT ${modules_target} 256 INSTALL_DIR "${ARG_INSTALL_PREFIX}/_mlir_libs" 257 OUTPUT_DIRECTORY "${ARG_ROOT_PREFIX}/_mlir_libs" 258 SOURCES ${_cpp_sources} 259 LINK_LIBS PRIVATE 260 ${_private_link_libs} 261 ${ARG_COMMON_CAPI_LINK_LIBS} 262 ) 263 add_dependencies(${name} ${_extension_target}) 264 mlir_python_setup_extension_rpath(${_extension_target}) 265 else() 266 message(SEND_ERROR "Unrecognized source type '${_source_type}' for python source target ${sources_target}") 267 return() 268 endif() 269 endfunction() 270 271 _flatten_mlir_python_targets(_flat_targets ${ARG_DECLARED_SOURCES}) 272 # Collect dependencies. 273 set(_depends) 274 foreach(sources_target ${_flat_targets}) 275 get_target_property(_local_depends ${sources_target} mlir_python_FILE_DEPENDS) 276 if(_local_depends) 277 list(APPEND _depends ${_local_depends}) 278 endif() 279 endforeach() 280 281 # Build the modules target. 282 add_custom_target(${name} ALL DEPENDS ${_depends}) 283 foreach(sources_target ${_flat_targets}) 284 _process_target(${name} ${sources_target}) 285 endforeach() 286 287 # Create an install target. 288 if (NOT LLVM_ENABLE_IDE) 289 add_llvm_install_targets( 290 install-${name} 291 DEPENDS ${name} 292 COMPONENT ${name}) 293 endif() 294endfunction() 295 296# Function: declare_mlir_dialect_python_bindings 297# Helper to generate source groups for dialects, including both static source 298# files and a TD_FILE to generate wrappers. 299# 300# This will generate a source group named ${ADD_TO_PARENT}.${DIALECT_NAME}. 301# 302# Arguments: 303# ROOT_DIR: Same as for declare_mlir_python_sources(). 304# ADD_TO_PARENT: Same as for declare_mlir_python_sources(). Unique names 305# for the subordinate source groups are derived from this. 306# TD_FILE: Tablegen file to generate source for (relative to ROOT_DIR). 307# DIALECT_NAME: Python name of the dialect. 308# SOURCES: Same as declare_mlir_python_sources(). 309# SOURCES_GLOB: Same as declare_mlir_python_sources(). 310# DEPENDS: Additional dependency targets. 311function(declare_mlir_dialect_python_bindings) 312 cmake_parse_arguments(ARG 313 "" 314 "ROOT_DIR;ADD_TO_PARENT;TD_FILE;DIALECT_NAME" 315 "SOURCES;SOURCES_GLOB;DEPENDS" 316 ${ARGN}) 317 # Sources. 318 set(_dialect_target "${ARG_ADD_TO_PARENT}.${ARG_DIALECT_NAME}") 319 declare_mlir_python_sources(${_dialect_target} 320 ROOT_DIR "${ARG_ROOT_DIR}" 321 ADD_TO_PARENT "${ARG_ADD_TO_PARENT}" 322 SOURCES "${ARG_SOURCES}" 323 SOURCES_GLOB "${ARG_SOURCES_GLOB}" 324 ) 325 326 # Tablegen 327 if(ARG_TD_FILE) 328 set(tblgen_target "${ARG_ADD_TO}.${ARG_DIALECT_NAME}.tablegen") 329 set(td_file "${ARG_ROOT_DIR}/${ARG_TD_FILE}") 330 get_filename_component(relative_td_directory "${ARG_TD_FILE}" DIRECTORY) 331 file(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/${relative_td_directory}") 332 set(dialect_filename "${relative_td_directory}/_${ARG_DIALECT_NAME}_ops_gen.py") 333 set(LLVM_TARGET_DEFINITIONS ${td_file}) 334 mlir_tablegen("${dialect_filename}" -gen-python-op-bindings 335 -bind-dialect=${ARG_DIALECT_NAME}) 336 add_public_tablegen_target(${tblgen_target}) 337 if(ARG_DEPENDS) 338 add_dependencies(${tblgen_target} ${ARG_DEPENDS}) 339 endif() 340 341 # Generated. 342 declare_mlir_python_sources("${ARG_ADD_TO_PARENT}.${ARG_DIALECT_NAME}.ops_gen" 343 ROOT_DIR "${CMAKE_CURRENT_BINARY_DIR}" 344 ADD_TO_PARENT "${_dialect_target}" 345 SOURCES "${dialect_filename}" 346 ) 347 endif() 348endfunction() 349 350# Function: mlir_python_setup_extension_rpath 351# Sets RPATH properties on a target, assuming that it is being output to 352# an _mlir_libs directory with all other libraries. For static linkage, 353# the RPATH will just be the origin. If linking dynamically, then the LLVM 354# library directory will be added. 355# Arguments: 356# RELATIVE_INSTALL_ROOT: If building dynamically, an RPATH entry will be 357# added to the install tree lib/ directory by first traversing this 358# path relative to the installation location. Typically a number of ".." 359# entries, one for each level of the install path. 360function(mlir_python_setup_extension_rpath target) 361 cmake_parse_arguments(ARG 362 "" 363 "RELATIVE_INSTALL_ROOT" 364 "" 365 ${ARGN}) 366 367 # RPATH handling. 368 # For the build tree, include the LLVM lib directory and the current 369 # directory for RPATH searching. For install, just the current directory 370 # (assumes that needed dependencies have been installed). 371 if(NOT APPLE AND NOT UNIX) 372 return() 373 endif() 374 375 set(_origin_prefix "\$ORIGIN") 376 if(APPLE) 377 set(_origin_prefix "@loader_path") 378 endif() 379 set_target_properties(${target} PROPERTIES 380 BUILD_WITH_INSTALL_RPATH OFF 381 BUILD_RPATH "${_origin_prefix}" 382 INSTALL_RPATH "${_origin_prefix}" 383 ) 384 385 # For static builds, that is all that is needed: all dependencies will be in 386 # the one directory. For shared builds, then we also need to add the global 387 # lib directory. This will be absolute for the build tree and relative for 388 # install. 389 # When we have access to CMake >= 3.20, there is a helper to calculate this. 390 if(BUILD_SHARED_LIBS AND ARG_RELATIVE_INSTALL_ROOT) 391 get_filename_component(_real_lib_dir "${LLVM_LIBRARY_OUTPUT_INTDIR}" REALPATH) 392 set_property(TARGET ${target} APPEND PROPERTY 393 BUILD_RPATH "${_real_lib_dir}") 394 set_property(TARGET ${target} APPEND PROPERTY 395 INSTALL_RPATH "${_origin_prefix}/${ARG_RELATIVE_INSTALL_ROOT}/lib${LLVM_LIBDIR_SUFFIX}") 396 endif() 397endfunction() 398 399# Function: add_mlir_python_common_capi_library 400# Adds a shared library which embeds dependent CAPI libraries needed to link 401# all extensions. 402# Arguments: 403# INSTALL_COMPONENT: Name of the install component. Typically same as the 404# target name passed to add_mlir_python_modules(). 405# INSTALL_DESTINATION: Prefix into the install tree in which to install the 406# library. 407# OUTPUT_DIRECTORY: Full path in the build tree in which to create the 408# library. Typically, this will be the common _mlir_libs directory where 409# all extensions are emitted. 410# RELATIVE_INSTALL_ROOT: See mlir_python_setup_extension_rpath(). 411# DECLARED_SOURCES: Source groups from which to discover dependent 412# EMBED_CAPI_LINK_LIBS. 413# EMBED_LIBS: Additional libraries to embed (must be built with OBJECTS and 414# have an "obj.${name}" object library associated). 415function(add_mlir_python_common_capi_library name) 416 cmake_parse_arguments(ARG 417 "" 418 "INSTALL_COMPONENT;INSTALL_DESTINATION;OUTPUT_DIRECTORY;RELATIVE_INSTALL_ROOT" 419 "DECLARED_SOURCES;EMBED_LIBS" 420 ${ARGN}) 421 # Collect all explicit and transitive embed libs. 422 set(_embed_libs ${ARG_EMBED_LIBS}) 423 _flatten_mlir_python_targets(_all_source_targets ${ARG_DECLARED_SOURCES}) 424 foreach(t ${_all_source_targets}) 425 get_target_property(_local_embed_libs ${t} mlir_python_EMBED_CAPI_LINK_LIBS) 426 if(_local_embed_libs) 427 list(APPEND _embed_libs ${_local_embed_libs}) 428 endif() 429 endforeach() 430 list(REMOVE_DUPLICATES _embed_libs) 431 432 # Generate the aggregate .so that everything depends on. 433 add_mlir_aggregate(${name} 434 SHARED 435 DISABLE_INSTALL 436 EMBED_LIBS ${_embed_libs} 437 ) 438 439 if(MSVC) 440 set_property(TARGET ${name} PROPERTY WINDOWS_EXPORT_ALL_SYMBOLS ON) 441 endif() 442 set_target_properties(${name} PROPERTIES 443 LIBRARY_OUTPUT_DIRECTORY "${ARG_OUTPUT_DIRECTORY}" 444 BINARY_OUTPUT_DIRECTORY "${ARG_OUTPUT_DIRECTORY}" 445 # Needed for windows (and don't hurt others). 446 RUNTIME_OUTPUT_DIRECTORY "${ARG_OUTPUT_DIRECTORY}" 447 ARCHIVE_OUTPUT_DIRECTORY "${ARG_OUTPUT_DIRECTORY}" 448 ) 449 mlir_python_setup_extension_rpath(${name} 450 RELATIVE_INSTALL_ROOT "${ARG_RELATIVE_INSTALL_ROOT}" 451 ) 452 install(TARGETS ${name} 453 COMPONENT ${ARG_INSTALL_COMPONENT} 454 LIBRARY DESTINATION "${ARG_INSTALL_DESTINATION}" 455 RUNTIME DESTINATION "${ARG_INSTALL_DESTINATION}" 456 ) 457 458endfunction() 459 460function(_flatten_mlir_python_targets output_var) 461 set(_flattened) 462 foreach(t ${ARGN}) 463 get_target_property(_source_type ${t} mlir_python_SOURCES_TYPE) 464 get_target_property(_depends ${t} mlir_python_DEPENDS) 465 if(_source_type) 466 list(APPEND _flattened "${t}") 467 if(_depends) 468 _flatten_mlir_python_targets(_local_flattened ${_depends}) 469 list(APPEND _flattened ${_local_flattened}) 470 endif() 471 endif() 472 endforeach() 473 list(REMOVE_DUPLICATES _flattened) 474 set(${output_var} "${_flattened}" PARENT_SCOPE) 475endfunction() 476 477################################################################################ 478# Build python extension 479################################################################################ 480function(add_mlir_python_extension libname extname) 481 cmake_parse_arguments(ARG 482 "" 483 "INSTALL_COMPONENT;INSTALL_DIR;OUTPUT_DIRECTORY" 484 "SOURCES;LINK_LIBS" 485 ${ARGN}) 486 if (ARG_UNPARSED_ARGUMENTS) 487 message(FATAL_ERROR " Unhandled arguments to add_mlir_python_extension(${libname}, ... : ${ARG_UNPARSED_ARGUMENTS}") 488 endif() 489 if ("${ARG_SOURCES}" STREQUAL "") 490 message(FATAL_ERROR " Missing SOURCES argument to add_mlir_python_extension(${libname}, ...") 491 endif() 492 493 # The actual extension library produces a shared-object or DLL and has 494 # sources that must be compiled in accordance with pybind11 needs (RTTI and 495 # exceptions). 496 pybind11_add_module(${libname} 497 ${ARG_SOURCES} 498 ) 499 500 # The extension itself must be compiled with RTTI and exceptions enabled. 501 # Also, some warning classes triggered by pybind11 are disabled. 502 target_compile_options(${libname} PRIVATE 503 $<$<OR:$<CXX_COMPILER_ID:Clang>,$<CXX_COMPILER_ID:AppleClang>,$<CXX_COMPILER_ID:GNU>>: 504 # Enable RTTI and exceptions. 505 -frtti -fexceptions 506 > 507 $<$<CXX_COMPILER_ID:MSVC>: 508 # Enable RTTI and exceptions. 509 /EHsc /GR> 510 ) 511 512 # Configure the output to match python expectations. 513 set_target_properties( 514 ${libname} PROPERTIES 515 LIBRARY_OUTPUT_DIRECTORY ${ARG_OUTPUT_DIRECTORY} 516 OUTPUT_NAME "${extname}" 517 NO_SONAME ON 518 ) 519 520 if(WIN32) 521 # Need to also set the RUNTIME_OUTPUT_DIRECTORY on Windows in order to 522 # control where the .dll gets written. 523 set_target_properties( 524 ${libname} PROPERTIES 525 RUNTIME_OUTPUT_DIRECTORY ${ARG_OUTPUT_DIRECTORY} 526 ARCHIVE_OUTPUT_DIRECTORY ${ARG_OUTPUT_DIRECTORY} 527 ) 528 endif() 529 530 # Python extensions depends *only* on the public API and LLVMSupport unless 531 # if further dependencies are added explicitly. 532 target_link_libraries(${libname} 533 PRIVATE 534 ${ARG_LINK_LIBS} 535 ${PYEXT_LIBADD} 536 ) 537 538 target_link_options(${libname} 539 PRIVATE 540 # On Linux, disable re-export of any static linked libraries that 541 # came through. 542 $<$<PLATFORM_ID:Linux>:LINKER:--exclude-libs,ALL> 543 ) 544 545 ################################################################################ 546 # Install 547 ################################################################################ 548 if (ARG_INSTALL_DIR) 549 install(TARGETS ${libname} 550 COMPONENT ${ARG_INSTALL_COMPONENT} 551 LIBRARY DESTINATION ${ARG_INSTALL_DIR} 552 ARCHIVE DESTINATION ${ARG_INSTALL_DIR} 553 # NOTE: Even on DLL-platforms, extensions go in the lib directory tree. 554 RUNTIME DESTINATION ${ARG_INSTALL_DIR} 555 ) 556 endif() 557endfunction() 558