# Copyright 2018 Amazon.com, Inc. or its affiliates. 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.
# A copy of the License is located at
#
#     http://aws.amazon.com/apache2.0/
#
# or in the "license" file accompanying this file. This file 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_package(Doxygen)
if (DOXYGEN_FOUND)
    # Configuration file and where it will be written
    set(doxyfile_in ${CMAKE_CURRENT_SOURCE_DIR}/doc/doxyfile.in)
    set(doxyfile ${CMAKE_CURRENT_BINARY_DIR}/doxyfile)

    configure_file(${doxyfile_in} ${doxyfile} @ONLY)
    message("Building documentation")

    add_custom_target(doc
            COMMAND ${DOXYGEN_EXECUTABLE} ${doxyfile}
            WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
            COMMENT "Generating API documentation with Doxygen"
            VERBATIM )
else (DOXYGEN_FOUND)
    message(WARN "Please install Doxygen to generate the documentation")
endif (DOXYGEN_FOUND)