# Copyright (c) 2016 Renat R. Dusaev <crank@qcrypt.org>
# Author: Renat R. Dusaev <crank@qcrypt.org>
# 
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
# the Software, and to permit persons to whom the Software is furnished to do so,
# subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
# FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
# COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
# IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

# This macro must be used instead of native CMake option() command in order
# to provide automated gathering of options.
macro( push_option optName optDescr optDefault )
    option( ${optName} ${optDescr} ${optDefault} )
    list( APPEND ${CMAKE_PROJECT_NAME}_OPTIONS "${optName}" )
endmacro( push_option )

# Upon invokation this function creates a variable named
# ${CMAKE_PROJECT_NAME}_OPTIONS_STR with string in form
# set( <optName> <ON|OFF> ) denoting options set by the project
# within macro above.
function( options_list )
    foreach( optionName IN ITEMS ${${CMAKE_PROJECT_NAME}_OPTIONS} )
        #message(STATUS "* ${optionName}")  # XXX (dev)
        string( CONCAT ${CMAKE_PROJECT_NAME}_OPTIONS_STR
                     ${${CMAKE_PROJECT_NAME}_OPTIONS_STR}
            "set( ${CMAKE_PROJECT_NAME}_${optionName} ${${optionName}} )\n" )
    endforeach()
    set( ${CMAKE_PROJECT_NAME}_OPTIONS_STR
         "# ${CMAKE_PROJECT_NAME} options:\n${${CMAKE_PROJECT_NAME}_OPTIONS_STR}"
         PARENT_SCOPE )
    #message( STATUS ${${CMAKE_PROJECT_NAME}_OPTIONS_STR} )
endfunction( options_list )

