flatbuffers/cmake: move build_flatbuffers to a standalone file
So that it could be included from both flatbuffers CMakeLists.txt and
FindFlatBuffers.cmake.
Change-Id: Ie16a879beef9367cd6fd9b2d2157044841a7cdbc
diff --git a/CMakeLists.txt b/CMakeLists.txt
index d7c8e1b..46205bb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -129,124 +129,6 @@
DEPENDS flatc)
endfunction()
-# General function to create FlatBuffer build rules for the given list of
-# schemas.
-#
-# flatbuffers_schemas: A list of flatbuffer schema files to process.
-#
-# schema_include_dirs: A list of schema file include directories, which will be
-# passed to flatc via the -I parameter.
-#
-# custom_target_name: The generated files will be added as dependencies for a
-# new custom target with this name. You should add that target as a dependency
-# for your main target to ensure these files are built. You can also retrieve
-# various properties from this target, such as GENERATED_INCLUDES_DIR,
-# BINARY_SCHEMAS_DIR, and COPY_TEXT_SCHEMAS_DIR.
-#
-# additional_dependencies: A list of additional dependencies that you'd like
-# all generated files to depend on. Pass in a blank string if you have none.
-#
-# generated_includes_dir: Where to generate the C++ header files for these
-# schemas. The generated includes directory will automatically be added to
-# CMake's include directories, and will be where generated header files are
-# placed. This parameter is optional; pass in empty string if you don't want to
-# generate include files for these schemas.
-#
-# binary_schemas_dir: If you specify an optional binary schema directory, binary
-# schemas will be generated for these schemas as well, and placed into the given
-# directory.
-#
-# copy_text_schemas_dir: If you want all text schemas (including schemas from
-# all schema include directories) copied into a directory (for example, if you
-# need them within your project to build JSON files), you can specify that
-# folder here. All text schemas will be copied to that folder.
-#
-# IMPORTANT: Make sure you quote all list arguments you pass to this function!
-# Otherwise CMake will only pass in the first element.
-# Example: build_flatbuffers("${fb_files}" "${include_dirs}" target_name ...)
-function(build_flatbuffers flatbuffers_schemas
- schema_include_dirs
- custom_target_name
- additional_dependencies
- generated_includes_dir
- binary_schemas_dir
- copy_text_schemas_dir)
- set(schema_glob "*.fbs")
- # Generate the include files parameters.
- set(include_params "")
- set(all_generated_files "")
- foreach (include_dir ${schema_include_dirs})
- set(include_params -I ${include_dir} ${include_params})
- if (NOT ${copy_text_schemas_dir} STREQUAL "")
- # Copy text schemas from dependent folders.
- file(GLOB_RECURSE dependent_schemas ${include_dir}/${schema_glob})
- foreach (dependent_schema ${dependent_schemas})
- file(COPY ${dependent_schema} DESTINATION ${copy_text_schemas_dir})
- endforeach()
- endif()
- endforeach()
-
- foreach(schema ${flatbuffers_schemas})
- get_filename_component(filename ${schema} NAME_WE)
- # For each schema, do the things we requested.
- if (NOT ${generated_includes_dir} STREQUAL "")
- set(generated_include ${generated_includes_dir}/${filename}_generated.h)
- add_custom_command(
- OUTPUT ${generated_include}
- COMMAND flatc --gen-mutable
- -o ${generated_includes_dir}
- ${include_params}
- -c ${schema}
- DEPENDS flatc ${schema} ${additional_dependencies})
- list(APPEND all_generated_files ${generated_include})
- endif()
-
- if (NOT ${binary_schemas_dir} STREQUAL "")
- set(binary_schema ${binary_schemas_dir}/${filename}.bfbs)
- add_custom_command(
- OUTPUT ${binary_schema}
- COMMAND flatc -b --schema
- -o ${binary_schemas_dir}
- ${include_params}
- ${schema}
- DEPENDS flatc ${schema} ${additional_dependencies})
- list(APPEND all_generated_files ${binary_schema})
- endif()
-
- if (NOT ${copy_text_schemas_dir} STREQUAL "")
- file(COPY ${schema} DESTINATION ${copy_text_schemas_dir})
- endif()
- endforeach()
-
- # Create a custom target that depends on all the generated files.
- # This is the target that you can depend on to trigger all these
- # to be built.
- add_custom_target(${custom_target_name}
- DEPENDS ${all_generated_files} ${additional_dependencies})
-
- # Register the include directory we are using.
- if (NOT ${generated_includes_dir} STREQUAL "")
- include_directories(${generated_includes_dir})
- set_property(TARGET ${custom_target_name}
- PROPERTY GENERATED_INCLUDES_DIR
- ${generated_includes_dir})
- endif()
-
- # Register the binary schemas dir we are using.
- if (NOT ${binary_schemas_dir} STREQUAL "")
- set_property(TARGET ${custom_target_name}
- PROPERTY BINARY_SCHEMAS_DIR
- ${binary_schemas_dir})
- endif()
-
- # Register the text schema copy dir we are using.
- if (NOT ${copy_text_schemas_dir} STREQUAL "")
- set_property(TARGET ${custom_target_name}
- PROPERTY COPY_TEXT_SCHEMAS_DIR
- ${copy_text_schemas_dir})
- endif()
-endfunction()
-
if(FLATBUFFERS_BUILD_TESTS)
compile_flatbuffers_schema_to_cpp(tests/monster_test.fbs)
include_directories(${CMAKE_CURRENT_BINARY_DIR}/tests)
@@ -275,3 +157,5 @@
"${CMAKE_CURRENT_BINARY_DIR}")
add_test(NAME flattests COMMAND flattests)
endif()
+
+include(CMake/BuildFlatBuffers.cmake)