1 function(_FlatBuffers_import)
2 find_package(Flatbuffers QUIET)
3 set(FlatBuffers_FOUND ${Flatbuffers_FOUND} PARENT_SCOPE)
4 endfunction(_FlatBuffers_import)
6 function(_FlatBuffers_build)
7 if(NOT BUILD_FLATBUFFERS)
8 message(STATUS "FlatBuffersConfig skip: BUILD_FLATBUFFERS OFF")
10 endif(NOT BUILD_FLATBUFFERS)
12 nnas_find_package(FlatBuffersSource EXACT 1.10 QUIET)
14 if(NOT FlatBuffersSource_FOUND)
15 # Source is not available
16 message(STATUS "FlatBuffersConfig skip: FlatBuffersSource not found")
18 endif(NOT FlatBuffersSource_FOUND)
20 set(ADDITIONAL_CXX_FLAGS "")
21 if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 8.0)
22 set(ADDITIONAL_CXX_FLAGS "-Wno-error=class-memaccess")
25 nnas_include(ExternalBuildTools)
26 ExternalBuild_CMake(CMAKE_DIR ${FlatBuffersSource_DIR}
27 BUILD_DIR ${CMAKE_BINARY_DIR}/externals/FLATBUFFERS-1.10/build
28 INSTALL_DIR ${EXT_OVERLAY_DIR}/FLATBUFFERS-1.10
29 BUILD_FLAGS ${ADDITIONAL_CXX_FLAGS}
30 IDENTIFIER "1.10-fix4"
31 EXTRA_OPTS "-DFLATBUFFERS_BUILD_TESTS:BOOL=OFF -DPOSITION_INDEPENDENT_CODE:BOOL=ON"
32 PKG_NAME "FLATBUFFERS-1.10")
34 endfunction(_FlatBuffers_build)
40 if(NOT TARGET flatbuffers-1.10)
41 add_library(flatbuffers-1.10 INTERFACE)
42 target_link_libraries(flatbuffers-1.10 INTERFACE flatbuffers::flatbuffers)
43 message(STATUS "Found FlatBuffers-1.10: TRUE")
44 endif(NOT TARGET flatbuffers-1.10)
46 function(FlatBuffers_Generate PREFIX OUTPUT_DIR SCHEMA_DIR)
47 get_filename_component(abs_output_dir ${OUTPUT_DIR} ABSOLUTE)
48 get_filename_component(abs_schema_dir ${SCHEMA_DIR} ABSOLUTE)
50 foreach(schema ${ARGN})
51 get_filename_component(schema_fn "${schema}" NAME)
52 get_filename_component(dir "${schema}" DIRECTORY)
54 get_filename_component(schema_fn_we "${schema_fn}" NAME_WE)
56 list(APPEND SCHEMA_FILES "${abs_schema_dir}/${schema}")
57 list(APPEND OUTPUT_FILES "${abs_output_dir}/${schema_fn_we}_generated.h")
60 add_custom_command(OUTPUT ${OUTPUT_FILES}
61 COMMAND ${CMAKE_COMMAND} -E make_directory "${abs_output_dir}"
62 COMMAND "$<TARGET_FILE:flatbuffers::flatc>" -c --no-includes
63 --no-union-value-namespacing
64 --gen-object-api -o "${abs_output_dir}"
66 DEPENDS flatbuffers::flatc)
68 set(${PREFIX}_SOURCES ${OUTPUT_FILES} PARENT_SCOPE)
69 set(${PREFIX}_INCLUDE_DIRS ${abs_output_dir} PARENT_SCOPE)
70 endfunction(FlatBuffers_Generate)
72 function(FlatBuffers_Target TGT)
73 set(oneValueArgs OUTPUT_DIR SCHEMA_DIR INCLUDE_DIR)
74 set(multiValueArgs SCHEMA_FILES)
75 cmake_parse_arguments(ARG "" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
77 # Use OUTPUT_DIR as INCLUDE_DIR if INCLUDE_DIR is not specified
78 if(NOT ARG_INCLUDE_DIR)
79 set(ARG_INCLUDE_DIR ${ARG_OUTPUT_DIR})
80 endif(NOT ARG_INCLUDE_DIR)
82 get_filename_component(abs_output_dir ${ARG_OUTPUT_DIR} ABSOLUTE)
83 get_filename_component(abs_include_dir ${ARG_INCLUDE_DIR} ABSOLUTE)
84 get_filename_component(abs_schema_dir ${ARG_SCHEMA_DIR} ABSOLUTE)
86 # Let's reset list variables before using them
87 # NOTE THIS DOES NOT AFFECT parent scope
91 foreach(schema ${ARG_SCHEMA_FILES})
92 get_filename_component(schema_fn "${schema}" NAME)
93 get_filename_component(dir "${schema}" DIRECTORY)
95 get_filename_component(schema_fn_we "${schema_fn}" NAME_WE)
97 list(APPEND SCHEMA_FILES "${abs_schema_dir}/${schema}")
98 list(APPEND OUTPUT_FILES "${abs_output_dir}/${schema_fn_we}_generated.h")
102 add_custom_command(OUTPUT ${OUTPUT_FILES}
103 COMMAND ${CMAKE_COMMAND} -E make_directory "${abs_output_dir}"
104 COMMAND "$<TARGET_FILE:flatbuffers::flatc>" -c --no-includes
105 --no-union-value-namespacing
106 --gen-object-api -o "${abs_output_dir}"
108 DEPENDS ${SCHEMA_FILES}
109 COMMENT "Generate '${TGT}' headers")
111 # NOTE This header-only library is deliberately declared as STATIC library
112 # to avoid possible scope issues related with generated files
113 add_library(${TGT} STATIC ${OUTPUT_FILES})
114 set_target_properties(${TGT} PROPERTIES LINKER_LANGUAGE CXX)
115 target_include_directories(${TGT} PUBLIC "${ARG_INCLUDE_DIR}")
116 target_link_libraries(${TGT} PUBLIC flatbuffers-1.10)
117 endfunction(FlatBuffers_Target)
118 endif(FlatBuffers_FOUND)