protobuf-config.cmake.in 5.9 KB

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  1. # User options
  2. include("${CMAKE_CURRENT_LIST_DIR}/protobuf-options.cmake")
  3. # Depend packages
  4. @_protobuf_FIND_ZLIB@
  5. # Imported targets
  6. include("${CMAKE_CURRENT_LIST_DIR}/protobuf-targets.cmake")
  7. function(protobuf_generate)
  8. include(CMakeParseArguments)
  9. set(_options APPEND_PATH)
  10. set(_singleargs LANGUAGE OUT_VAR EXPORT_MACRO PROTOC_OUT_DIR PLUGIN PLUGIN_OPTIONS)
  11. if(COMMAND target_sources)
  12. list(APPEND _singleargs TARGET)
  13. endif()
  14. set(_multiargs PROTOS IMPORT_DIRS GENERATE_EXTENSIONS PROTOC_OPTIONS)
  15. cmake_parse_arguments(protobuf_generate "${_options}" "${_singleargs}" "${_multiargs}" "${ARGN}")
  16. if(NOT protobuf_generate_PROTOS AND NOT protobuf_generate_TARGET)
  17. message(SEND_ERROR "Error: protobuf_generate called without any targets or source files")
  18. return()
  19. endif()
  20. if(NOT protobuf_generate_OUT_VAR AND NOT protobuf_generate_TARGET)
  21. message(SEND_ERROR "Error: protobuf_generate called without a target or output variable")
  22. return()
  23. endif()
  24. if(NOT protobuf_generate_LANGUAGE)
  25. set(protobuf_generate_LANGUAGE cpp)
  26. endif()
  27. string(TOLOWER ${protobuf_generate_LANGUAGE} protobuf_generate_LANGUAGE)
  28. if(NOT protobuf_generate_PROTOC_OUT_DIR)
  29. set(protobuf_generate_PROTOC_OUT_DIR ${CMAKE_CURRENT_BINARY_DIR})
  30. endif()
  31. if(protobuf_generate_EXPORT_MACRO AND protobuf_generate_LANGUAGE STREQUAL cpp)
  32. set(_dll_export_decl "dllexport_decl=${protobuf_generate_EXPORT_MACRO}")
  33. endif()
  34. foreach(_option ${_dll_export_decl} ${protobuf_generate_PLUGIN_OPTIONS})
  35. # append comma - not using CMake lists and string replacement as users
  36. # might have semicolons in options
  37. if(_plugin_options)
  38. set( _plugin_options "${_plugin_options},")
  39. endif()
  40. set(_plugin_options "${_plugin_options}${_option}")
  41. endforeach()
  42. if(protobuf_generate_PLUGIN)
  43. set(_plugin "--plugin=${protobuf_generate_PLUGIN}")
  44. endif()
  45. if(NOT protobuf_generate_GENERATE_EXTENSIONS)
  46. if(protobuf_generate_LANGUAGE STREQUAL cpp)
  47. set(protobuf_generate_GENERATE_EXTENSIONS .pb.h .pb.cc)
  48. elseif(protobuf_generate_LANGUAGE STREQUAL python)
  49. set(protobuf_generate_GENERATE_EXTENSIONS _pb2.py)
  50. else()
  51. message(SEND_ERROR "Error: protobuf_generate given unknown Language ${LANGUAGE}, please provide a value for GENERATE_EXTENSIONS")
  52. return()
  53. endif()
  54. endif()
  55. if(protobuf_generate_TARGET)
  56. get_target_property(_source_list ${protobuf_generate_TARGET} SOURCES)
  57. foreach(_file ${_source_list})
  58. if(_file MATCHES "proto$")
  59. list(APPEND protobuf_generate_PROTOS ${_file})
  60. endif()
  61. endforeach()
  62. endif()
  63. if(NOT protobuf_generate_PROTOS)
  64. message(SEND_ERROR "Error: protobuf_generate could not find any .proto files")
  65. return()
  66. endif()
  67. if(protobuf_generate_APPEND_PATH)
  68. # Create an include path for each file specified
  69. foreach(_file ${protobuf_generate_PROTOS})
  70. get_filename_component(_abs_file ${_file} ABSOLUTE)
  71. get_filename_component(_abs_path ${_abs_file} PATH)
  72. list(FIND _protobuf_include_path ${_abs_path} _contains_already)
  73. if(${_contains_already} EQUAL -1)
  74. list(APPEND _protobuf_include_path -I ${_abs_path})
  75. endif()
  76. endforeach()
  77. endif()
  78. foreach(DIR ${protobuf_generate_IMPORT_DIRS})
  79. get_filename_component(ABS_PATH ${DIR} ABSOLUTE)
  80. list(FIND _protobuf_include_path ${ABS_PATH} _contains_already)
  81. if(${_contains_already} EQUAL -1)
  82. list(APPEND _protobuf_include_path -I ${ABS_PATH})
  83. endif()
  84. endforeach()
  85. if(NOT _protobuf_include_path)
  86. set(_protobuf_include_path -I ${CMAKE_CURRENT_SOURCE_DIR})
  87. endif()
  88. set(_generated_srcs_all)
  89. foreach(_proto ${protobuf_generate_PROTOS})
  90. get_filename_component(_abs_file ${_proto} ABSOLUTE)
  91. get_filename_component(_abs_dir ${_abs_file} DIRECTORY)
  92. get_filename_component(_file_full_name ${_proto} NAME)
  93. string(FIND "${_file_full_name}" "." _file_last_ext_pos REVERSE)
  94. string(SUBSTRING "${_file_full_name}" 0 ${_file_last_ext_pos} _basename)
  95. set(_suitable_include_found FALSE)
  96. foreach(DIR ${_protobuf_include_path})
  97. if(NOT DIR STREQUAL "-I")
  98. file(RELATIVE_PATH _rel_dir ${DIR} ${_abs_dir})
  99. string(FIND "${_rel_dir}" "../" _is_in_parent_folder)
  100. if (NOT ${_is_in_parent_folder} EQUAL 0)
  101. set(_suitable_include_found TRUE)
  102. break()
  103. endif()
  104. endif()
  105. endforeach()
  106. if(NOT _suitable_include_found)
  107. message(SEND_ERROR "Error: protobuf_generate could not find any correct proto include directory.")
  108. return()
  109. endif()
  110. set(_generated_srcs)
  111. foreach(_ext ${protobuf_generate_GENERATE_EXTENSIONS})
  112. list(APPEND _generated_srcs "${protobuf_generate_PROTOC_OUT_DIR}/${_rel_dir}/${_basename}${_ext}")
  113. endforeach()
  114. list(APPEND _generated_srcs_all ${_generated_srcs})
  115. set(_comment "Running ${protobuf_generate_LANGUAGE} protocol buffer compiler on ${_proto}")
  116. if(protobuf_generate_PROTOC_OPTIONS)
  117. set(_comment "${_comment}, protoc-options: ${protobuf_generate_PROTOC_OPTIONS}")
  118. endif()
  119. if(_plugin_options)
  120. set(_comment "${_comment}, plugin-options: ${_plugin_options}")
  121. endif()
  122. add_custom_command(
  123. OUTPUT ${_generated_srcs}
  124. COMMAND protobuf::protoc
  125. ARGS ${protobuf_generate_PROTOC_OPTIONS} --${protobuf_generate_LANGUAGE}_out ${_plugin_options}:${protobuf_generate_PROTOC_OUT_DIR} ${_plugin} ${_protobuf_include_path} ${_abs_file}
  126. DEPENDS ${_abs_file} protobuf::protoc
  127. COMMENT ${_comment}
  128. VERBATIM )
  129. endforeach()
  130. set_source_files_properties(${_generated_srcs_all} PROPERTIES GENERATED TRUE)
  131. if(protobuf_generate_OUT_VAR)
  132. set(${protobuf_generate_OUT_VAR} ${_generated_srcs_all} PARENT_SCOPE)
  133. endif()
  134. if(protobuf_generate_TARGET)
  135. target_sources(${protobuf_generate_TARGET} PRIVATE ${_generated_srcs_all})
  136. endif()
  137. endfunction()
  138. # CMake FindProtobuf module compatible file
  139. if(protobuf_MODULE_COMPATIBLE)
  140. include("${CMAKE_CURRENT_LIST_DIR}/protobuf-module.cmake")
  141. endif()