1 # Ceres Solver - A fast non-linear least squares minimizer 2 # Copyright 2014 Google Inc. All rights reserved. 3 # http://code.google.com/p/ceres-solver/ 4 # 5 # Redistribution and use in source and binary forms, with or without 6 # modification, are permitted provided that the following conditions are met: 7 # 8 # * Redistributions of source code must retain the above copyright notice, 9 # this list of conditions and the following disclaimer. 10 # * Redistributions in binary form must reproduce the above copyright notice, 11 # this list of conditions and the following disclaimer in the documentation 12 # and/or other materials provided with the distribution. 13 # * Neither the name of Google Inc. nor the names of its contributors may be 14 # used to endorse or promote products derived from this software without 15 # specific prior written permission. 16 # 17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18 # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21 # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 # POSSIBILITY OF SUCH DAMAGE. 28 # 29 # Author: alexs.mac (a] gmail.com (Alex Stewart) 30 31 # By default, there is no easy way in CMake to set the value of a cache 32 # variable without reinitialising it, which involves resetting its 33 # associated help string. This is particularly annoying for CMake options 34 # where they need to programmatically updated. 35 # 36 # This function automates this process by getting the current help string 37 # for the cache variable to update, then reinitialising it with the new 38 # value, but with the original help string. 39 FUNCTION(UPDATE_CACHE_VARIABLE VAR_NAME VALUE) 40 GET_PROPERTY(HELP_STRING CACHE ${VAR_NAME} PROPERTY HELPSTRING) 41 GET_PROPERTY(VAR_TYPE CACHE ${VAR_NAME} PROPERTY TYPE) 42 SET(${VAR_NAME} ${VALUE} CACHE ${VAR_TYPE} "${HELP_STRING}" FORCE) 43 ENDFUNCTION() 44
