170 lines
		
	
	
	
		
			5 KiB
		
	
	
	
		
			CMake
		
	
	
	
	
	
			
		
		
	
	
			170 lines
		
	
	
	
		
			5 KiB
		
	
	
	
		
			CMake
		
	
	
	
	
	
| #
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| # Copyright 2017 The Abseil Authors.
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| #
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| # Licensed under the Apache License, Version 2.0 (the "License");
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| # you may not use this file except in compliance with the License.
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| # You may obtain a copy of the License at
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| #
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| #    http://www.apache.org/licenses/LICENSE-2.0
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| #
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| # Unless required by applicable law or agreed to in writing, software
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| # distributed under the License is distributed on an "AS IS" BASIS,
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| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| # See the License for the specific language governing permissions and
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| # limitations under the License.
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| #
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| 
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| include(CMakeParseArguments)
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| 
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| # The IDE folder for Abseil that will be used if Abseil is included in a CMake
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| # project that sets
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| #    set_property(GLOBAL PROPERTY USE_FOLDERS ON)
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| # For example, Visual Studio supports folders.
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| set(ABSL_IDE_FOLDER Abseil)
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| 
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| #
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| # create a library in the absl namespace
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| #
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| # parameters
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| # SOURCES : sources files for the library
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| # PUBLIC_LIBRARIES: targets and flags for linking phase
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| # PRIVATE_COMPILE_FLAGS: compile flags for the library. Will not be exported.
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| # EXPORT_NAME: export name for the absl:: target export
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| # TARGET: target name
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| #
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| # create a target associated to <NAME>
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| # libraries are installed under CMAKE_INSTALL_FULL_LIBDIR by default
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| #
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| function(absl_library)
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|   cmake_parse_arguments(ABSL_LIB
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|     "DISABLE_INSTALL" # keep that in case we want to support installation one day
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|     "TARGET;EXPORT_NAME"
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|     "SOURCES;PUBLIC_LIBRARIES;PRIVATE_COMPILE_FLAGS"
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|     ${ARGN}
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|   )
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| 
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|   set(_NAME ${ABSL_LIB_TARGET})
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|   string(TOUPPER ${_NAME} _UPPER_NAME)
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| 
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|   add_library(${_NAME} STATIC ${ABSL_LIB_SOURCES})
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| 
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|   target_compile_options(${_NAME} PRIVATE ${ABSL_COMPILE_CXXFLAGS} ${ABSL_LIB_PRIVATE_COMPILE_FLAGS})
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|   target_link_libraries(${_NAME} PUBLIC ${ABSL_LIB_PUBLIC_LIBRARIES})
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|   target_include_directories(${_NAME}
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|     PUBLIC ${ABSL_COMMON_INCLUDE_DIRS} ${ABSL_LIB_PUBLIC_INCLUDE_DIRS}
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|     PRIVATE ${ABSL_LIB_PRIVATE_INCLUDE_DIRS}
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|   )
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|   # Add all Abseil targets to a a folder in the IDE for organization.
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|   set_property(TARGET ${_NAME} PROPERTY FOLDER ${ABSL_IDE_FOLDER})
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| 
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|   if(ABSL_LIB_EXPORT_NAME)
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|     add_library(absl::${ABSL_LIB_EXPORT_NAME} ALIAS ${_NAME})
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|   endif()
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| endfunction()
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| 
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| 
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| 
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| #
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| # header only virtual target creation
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| #
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| function(absl_header_library)
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|   cmake_parse_arguments(ABSL_HO_LIB
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|     "DISABLE_INSTALL"
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|     "EXPORT_NAME;TARGET"
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|     "PUBLIC_LIBRARIES;PRIVATE_COMPILE_FLAGS;PUBLIC_INCLUDE_DIRS;PRIVATE_INCLUDE_DIRS"
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|     ${ARGN}
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|   )
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| 
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|   set(_NAME ${ABSL_HO_LIB_TARGET})
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| 
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|   set(__dummy_header_only_lib_file "${CMAKE_CURRENT_BINARY_DIR}/${_NAME}_header_only_dummy.cc")
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| 
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|   if(NOT EXISTS ${__dummy_header_only_lib_file})
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|     file(WRITE ${__dummy_header_only_lib_file}
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|       "/* generated file for header-only cmake target */
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| 
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|       namespace absl {
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| 
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|        // single meaningless symbol
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|        void ${_NAME}__header_fakesym() {}
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|       }  // namespace absl
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|       "
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|     )
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|   endif()
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| 
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| 
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|   add_library(${_NAME} ${__dummy_header_only_lib_file})
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|   target_link_libraries(${_NAME} PUBLIC ${ABSL_HO_LIB_PUBLIC_LIBRARIES})
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|   target_include_directories(${_NAME}
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|     PUBLIC ${ABSL_COMMON_INCLUDE_DIRS} ${ABSL_HO_LIB_PUBLIC_INCLUDE_DIRS}
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|     PRIVATE ${ABSL_HO_LIB_PRIVATE_INCLUDE_DIRS}
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|   )
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| 
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|   # Add all Abseil targets to a a folder in the IDE for organization.
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|   set_property(TARGET ${_NAME} PROPERTY FOLDER ${ABSL_IDE_FOLDER})
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| 
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|   if(ABSL_HO_LIB_EXPORT_NAME)
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|     add_library(absl::${ABSL_HO_LIB_EXPORT_NAME} ALIAS ${_NAME})
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|   endif()
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| 
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| endfunction()
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| 
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| 
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| #
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| # create an abseil unit_test and add it to the executed test list
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| #
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| # parameters
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| # TARGET: target name prefix
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| # SOURCES: sources files for the tests
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| # PUBLIC_LIBRARIES: targets and flags for linking phase.
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| # PRIVATE_COMPILE_FLAGS: compile flags for the test. Will not be exported.
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| #
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| # create a target associated to <NAME>_bin
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| #
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| # all tests will be register for execution with add_test()
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| #
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| # test compilation and execution is disable when ABSL_RUN_TESTS=OFF
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| #
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| function(absl_test)
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| 
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|   cmake_parse_arguments(ABSL_TEST
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|     ""
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|     "TARGET"
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|     "SOURCES;PUBLIC_LIBRARIES;PRIVATE_COMPILE_FLAGS;PUBLIC_INCLUDE_DIRS"
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|     ${ARGN}
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|   )
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| 
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| 
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|   if(ABSL_RUN_TESTS)
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| 
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|     set(_NAME ${ABSL_TEST_TARGET})
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|     string(TOUPPER ${_NAME} _UPPER_NAME)
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| 
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|     add_executable(${_NAME}_bin ${ABSL_TEST_SOURCES})
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| 
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|     target_compile_options(${_NAME}_bin PRIVATE ${ABSL_COMPILE_CXXFLAGS} ${ABSL_TEST_PRIVATE_COMPILE_FLAGS})
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|     target_link_libraries(${_NAME}_bin PUBLIC ${ABSL_TEST_PUBLIC_LIBRARIES} ${ABSL_TEST_COMMON_LIBRARIES})
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|     target_include_directories(${_NAME}_bin
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|       PUBLIC ${ABSL_COMMON_INCLUDE_DIRS} ${ABSL_TEST_PUBLIC_INCLUDE_DIRS}
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|       PRIVATE ${GMOCK_INCLUDE_DIRS} ${GTEST_INCLUDE_DIRS}
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|     )
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| 
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|     # Add all Abseil targets to a a folder in the IDE for organization.
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|     set_property(TARGET ${_NAME}_bin PROPERTY FOLDER ${ABSL_IDE_FOLDER})
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| 
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|     add_test(${_NAME} ${_NAME}_bin)
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|   endif(ABSL_RUN_TESTS)
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| 
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| endfunction()
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| 
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| 
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| 
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| 
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| function(check_target my_target)
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| 
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|   if(NOT TARGET ${my_target})
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|     message(FATAL_ERROR " ABSL: compiling absl requires a ${my_target} CMake target in your project,
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|                    see CMake/README.md for more details")
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|   endif(NOT TARGET ${my_target})
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| 
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| endfunction()
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