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136 lines
4.6 KiB
136 lines
4.6 KiB
# @HEADER
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# ************************************************************************
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#
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# TriBITS: Tribal Build, Integrate, and Test System
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# Copyright 2013 Sandia Corporation
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#
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# Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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# the U.S. Government retains certain rights in this software.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are
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# met:
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#
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# 3. Neither the name of the Corporation nor the names of the
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#
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# ************************************************************************
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# @HEADER
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include(CMakeParseArguments)
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include(MultilineSet)
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include(ConcatStrings)
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# @FUNCTION: combined_option()
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#
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# Set up a ``BOOL`` cache variable (i.e. an option) based on a set of
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# dependent options.
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#
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# Usage::
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#
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# combined_option( <combinedOptionName>
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# DEP_OPTIONS_NAMES <depOpName0> <depOptName1> ...
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# DOCSTR "<docstr0>" "<docstr1>" ...
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# )
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#
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# This sets up a ``BOOL`` cache variable ``<combinedOptionName>`` which is
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# defaulted to ``ON`` if all of the listed dependent option variables
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# ``<depOpName0>``, ``<depOptName1>``, ... are all ``ON``. However, if
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# ``<combinedOptionName>`` is set to ``ON`` by the user and not all of the
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# dependent option variables are also ``ON``, then this results in a fatal
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# error and all processing stops.
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#
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# This is used by a CMake project to automatically turn on a feature that
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# requires a set of other features (when they are all enabled) but allows a
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# user to disable the feature if desired.
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#
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function(combined_option COMBINED_OPTION_NAME)
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cmake_parse_arguments(
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#prefix
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PARSE
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#options
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""
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#one_value_keywords
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""
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#multi_value_keywords
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"DEP_OPTIONS_NAMES;DOCSTR"
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${ARGN}
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)
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tribits_check_for_unparsed_arguments()
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# ToDo: Assert that the right input was passed in!
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set(DEFAULT_VAL ON)
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foreach( DEP_OPTION_NAME ${PARSE_DEP_OPTIONS_NAMES} )
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if (NOT ${DEP_OPTION_NAME})
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set(DEFAULT_VAL OFF)
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endif()
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endforeach()
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concat_strings(DOCSTR ${PARSE_DOCSTR})
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option(${COMBINED_OPTION_NAME} "${DOCSTR}"
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${DEFAULT_VAL} )
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#print_var(${COMBINED_OPTION_NAME})
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# Determine if the combined option was turned on by the individual options
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# are not turned on as well.
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set(ALL_ENABLED TRUE)
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if (${COMBINED_OPTION_NAME})
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foreach( DEP_OPTION_NAME ${PARSE_DEP_OPTIONS_NAMES})
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#print_var(${DEP_OPTION_NAME})
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if (NOT ${DEP_OPTION_NAME})
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set(ALL_ENABLED FALSE)
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break()
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endif()
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endforeach()
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endif()
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# Print out detailed error message if the combined option was enabled but
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# the dependent options were not.
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if (NOT ALL_ENABLED)
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set(OPTION_NAMES "")
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set(OPTION_NAMES_AND_VALUES "")
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foreach( DEP_OPTION_NAME ${PARSE_DEP_OPTIONS_NAMES})
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if (NOT OPTION_NAMES)
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set(OPTION_NAMES "${DEP_OPTION_NAME}")
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else()
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set(OPTION_NAMES "${OPTION_NAMES}, ${DEP_OPTION_NAME}")
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endif()
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set(OPTION_NAMES_AND_VALUES
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"${OPTION_NAMES_AND_VALUES} ${DEP_OPTION_NAME}='${${DEP_OPTION_NAME}}'\n")
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endforeach()
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message(FATAL_ERROR
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"Error: you can not enable the option ${COMBINED_OPTION_NAME} unless"
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" you also enable the options ${OPTION_NAMES}. The current option"
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" values are:\n${OPTION_NAMES_AND_VALUES}" )
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endif()
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endfunction()
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