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# Copyright 2014 Stefan.Eilemann@epfl.ch
# Copyright 2014 Google Inc. All rights reserved.
#
# 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
#
# http://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.
# Find the flatbuffers schema compiler
#
# Output Variables:
# * FLATBUFFERS_FLATC_EXECUTABLE the flatc compiler executable
# * FLATBUFFERS_FOUND
#
# Provides:
# * FLATBUFFERS_GENERATE_C_HEADERS(Name <files>) creates the C++ headers
# for the given flatbuffer schema files.
# Returns the header files in ${Name}_OUTPUTS
set(FLATBUFFERS_CMAKE_DIR ${CMAKE_CURRENT_LIST_DIR})
find_program(FLATBUFFERS_FLATC_EXECUTABLE NAMES flatc)
find_path(FLATBUFFERS_INCLUDE_DIR NAMES flatbuffers/flatbuffers.h)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(flatbuffers
DEFAULT_MSG FLATBUFFERS_FLATC_EXECUTABLE FLATBUFFERS_INCLUDE_DIR)
if(FLATBUFFERS_FOUND)
function(FLATBUFFERS_GENERATE_C_HEADERS Name)
set(FLATC_OUTPUTS)
foreach(FILE ${ARGN})
get_filename_component(FLATC_OUTPUT ${FILE} NAME_WE)
set(FLATC_OUTPUT
"${CMAKE_CURRENT_BINARY_DIR}/${FLATC_OUTPUT}_generated.h")
list(APPEND FLATC_OUTPUTS ${FLATC_OUTPUT})
add_custom_command(OUTPUT ${FLATC_OUTPUT}
COMMAND ${FLATBUFFERS_FLATC_EXECUTABLE}
ARGS -c -o "${CMAKE_CURRENT_BINARY_DIR}/" ${FILE}
COMMENT "Building C++ header for ${FILE}"
WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
endforeach()
set(${Name}_OUTPUTS ${FLATC_OUTPUTS} PARENT_SCOPE)
endfunction()
set(FLATBUFFERS_INCLUDE_DIRS ${FLATBUFFERS_INCLUDE_DIR})
include_directories(${CMAKE_BINARY_DIR})
else()
set(FLATBUFFERS_INCLUDE_DIR)
endif()
include("${FLATBUFFERS_CMAKE_DIR}/BuildFlatBuffers.cmake")
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