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Add a dedicated iree_c_module CMake module (iree-org#5214)
Instead of using `iree_bytecode_module` to generate a C module, this adds a dedicated `iree_c_module` CMake module.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,102 @@ | ||
| # Copyright 2021 Google LLC | ||
| # | ||
| # Licensed under the Apache License, Version 2.0 (the "License"); | ||
| # you may not use this file except in compliance with the License. | ||
| # You may obtain a copy of the License at | ||
| # | ||
| # https://www.apache.org/licenses/LICENSE-2.0 | ||
| # | ||
| # Unless required by applicable law or agreed to in writing, software | ||
| # distributed under the License is distributed on an "AS IS" BASIS, | ||
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| # See the License for the specific language governing permissions and | ||
| # limitations under the License. | ||
|
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| include(CMakeParseArguments) | ||
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| # iree_c_module() | ||
| # | ||
| # Parameters: | ||
| # NAME: Name of target (see Note). | ||
| # SRC: MLIR source file to compile into a c module. | ||
| # H_FILE_OUTPUT: The H header file to output. | ||
| # TRANSLATE_TOOL: Translation tool to invoke (CMake target). The default | ||
| # tool is "iree-translate". | ||
| # FLAGS: Flags to pass to the translation tool (list of strings). The | ||
| # default flag set is "-iree-vm-ir-to-c-module". | ||
| # TESTONLY: When added, this target will only be built if user passes | ||
| # -DIREE_BUILD_TESTS=ON to CMake. | ||
| # | ||
| # Note: | ||
| # By default, iree_c_module will create a library named ${NAME}, | ||
| # and alias target iree::${NAME}. The iree:: form should always be used. | ||
| # This is to reduce namespace pollution. | ||
| function(iree_c_module) | ||
| cmake_parse_arguments( | ||
| _RULE | ||
| "TESTONLY" | ||
| "NAME;SRC;H_FILE_OUTPUT;TRANSLATE_TOOL" | ||
| "FLAGS" | ||
| ${ARGN} | ||
| ) | ||
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| if(_RULE_TESTONLY AND NOT IREE_BUILD_TESTS) | ||
| return() | ||
| endif() | ||
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| # Replace dependencies passed by ::name with iree::package::name | ||
| iree_package_ns(_PACKAGE_NS) | ||
| list(TRANSFORM _RULE_DEPS REPLACE "^::" "${_PACKAGE_NS}::") | ||
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| # Prefix the library with the package name, so we get: iree_package_name. | ||
| iree_package_name(_PACKAGE_NAME) | ||
| set(_NAME "${_PACKAGE_NAME}_${_RULE_NAME}") | ||
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| # Set defaults for FLAGS and TRANSLATE_TOOL | ||
| if(DEFINED _RULE_FLAGS) | ||
| set(_FLAGS ${_RULE_FLAGS}) | ||
| else() | ||
| set(_FLAGS "-iree-vm-ir-to-c-module") | ||
| endif() | ||
| if(DEFINED _RULE_TRANSLATE_TOOL) | ||
| set(_TRANSLATE_TOOL ${_RULE_TRANSLATE_TOOL}) | ||
| else() | ||
| set(_TRANSLATE_TOOL "iree-translate") | ||
| endif() | ||
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| iree_get_executable_path(_TRANSLATE_TOOL_EXECUTABLE ${_TRANSLATE_TOOL}) | ||
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| set(_ARGS "${_FLAGS}") | ||
| list(APPEND _ARGS "${CMAKE_CURRENT_SOURCE_DIR}/${_RULE_SRC}") | ||
| list(APPEND _ARGS "-o") | ||
| list(APPEND _ARGS "${_RULE_H_FILE_OUTPUT}") | ||
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| add_custom_command( | ||
| OUTPUT "${_RULE_H_FILE_OUTPUT}" | ||
| COMMAND ${_TRANSLATE_TOOL_EXECUTABLE} ${_ARGS} | ||
| # Changes to either the translation tool or the input source should | ||
| # trigger rebuilding. | ||
| DEPENDS ${_TRANSLATE_TOOL_EXECUTABLE} ${_RULE_SRC} | ||
| ) | ||
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| set(_GEN_TARGET "${_NAME}_gen") | ||
| add_custom_target( | ||
| ${_GEN_TARGET} | ||
| DEPENDS | ||
| ${_RULE_H_FILE_OUTPUT} | ||
| ) | ||
|
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| add_library(${_NAME} INTERFACE) | ||
| add_dependencies(${_NAME} ${_GEN_TARGET}) | ||
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| # Alias the iree_package_name library to iree::package::name. | ||
| # This lets us more clearly map to Bazel and makes it possible to | ||
| # disambiguate the underscores in paths vs. the separators. | ||
| add_library(${_PACKAGE_NS}::${_RULE_NAME} ALIAS ${_NAME}) | ||
| iree_package_dir(_PACKAGE_DIR) | ||
| if(${_RULE_NAME} STREQUAL ${_PACKAGE_DIR}) | ||
| # If the library name matches the package then treat it as a default. | ||
| # For example, foo/bar/ library 'bar' would end up as 'foo::bar'. | ||
| add_library(${_PACKAGE_NS} ALIAS ${_NAME}) | ||
| endif() | ||
| endfunction() |
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