| # Ceres Solver - A fast non-linear least squares minimizer | 
 | # Copyright 2013 Google Inc. All rights reserved. | 
 | # http://code.google.com/p/ceres-solver/ | 
 | # | 
 | # Redistribution and use in source and binary forms, with or without | 
 | # modification, are permitted provided that the following conditions are met: | 
 | # | 
 | # * Redistributions of source code must retain the above copyright notice, | 
 | #   this list of conditions and the following disclaimer. | 
 | # * Redistributions in binary form must reproduce the above copyright notice, | 
 | #   this list of conditions and the following disclaimer in the documentation | 
 | #   and/or other materials provided with the distribution. | 
 | # * Neither the name of Google Inc. nor the names of its contributors may be | 
 | #   used to endorse or promote products derived from this software without | 
 | #   specific prior written permission. | 
 | # | 
 | # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | 
 | # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | 
 | # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | 
 | # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | 
 | # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | 
 | # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | 
 | # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | 
 | # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | 
 | # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | 
 | # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | 
 | # POSSIBILITY OF SUCH DAMAGE. | 
 | # | 
 | # Author: pablo.speciale@gmail.com (Pablo Speciale) | 
 | # | 
 |  | 
 | # Default locations to search for on various platforms. | 
 | LIST(APPEND SEARCH_LIBS /usr/lib) | 
 | LIST(APPEND SEARCH_LIBS /usr/local/lib) | 
 | LIST(APPEND SEARCH_LIBS /usr/local/homebrew/lib) # Mac OS X | 
 | LIST(APPEND SEARCH_LIBS /opt/local/lib) | 
 |  | 
 | LIST(APPEND SEARCH_HEADERS /usr/include) | 
 | LIST(APPEND SEARCH_HEADERS /usr/local/include) | 
 | LIST(APPEND SEARCH_HEADERS /usr/local/homebrew/include) # Mac OS X | 
 | LIST(APPEND SEARCH_HEADERS /opt/local/include) | 
 |  | 
 | # Locations to search for Eigen | 
 | SET(EIGEN_SEARCH_HEADERS ${SEARCH_HEADERS}) | 
 | LIST(APPEND EIGEN_SEARCH_HEADERS /usr/include/eigen3) # Ubuntu 10.04's default location. | 
 | LIST(APPEND EIGEN_SEARCH_HEADERS /usr/local/include/eigen3) | 
 | LIST(APPEND EIGEN_SEARCH_HEADERS /usr/local/homebrew/include/eigen3)  # Mac OS X | 
 | LIST(APPEND EIGEN_SEARCH_HEADERS /opt/local/var/macports/software/eigen3/opt/local/include/eigen3) # Mac OS X | 
 |  | 
 | # Google Flags | 
 | OPTION(GFLAGS | 
 |        "Enable Google Flags." | 
 |        ON) | 
 |  | 
 | IF (${GFLAGS}) | 
 |   MESSAGE("-- Check for Google Flags") | 
 |   FIND_LIBRARY(GFLAGS_LIB NAMES gflags PATHS ${SEARCH_LIBS}) | 
 |   IF (NOT EXISTS ${GFLAGS_LIB}) | 
 |     MESSAGE(FATAL_ERROR | 
 |             "Can't find Google Flags. Please specify: " | 
 |             "-DGFLAGS_LIB=...") | 
 |   ENDIF (NOT EXISTS ${GFLAGS_LIB}) | 
 |   MESSAGE("-- Found Google Flags library: ${GFLAGS_LIB}") | 
 |   FIND_PATH(GFLAGS_INCLUDE NAMES gflags/gflags.h PATHS ${SEARCH_HEADERS}) | 
 |   IF (NOT EXISTS ${GFLAGS_INCLUDE}) | 
 |     MESSAGE(FATAL_ERROR | 
 |             "Can't find Google Flags. Please specify: " | 
 |             "-DGFLAGS_INCLUDE=...") | 
 |   ENDIF (NOT EXISTS ${GFLAGS_INCLUDE}) | 
 |   MESSAGE("-- Found Google Flags header in: ${GFLAGS_INCLUDE}") | 
 | ENDIF (${GFLAGS}) | 
 |  | 
 | # Google Logging | 
 | MESSAGE("-- Check for Google Log") | 
 | FIND_LIBRARY(GLOG_LIB NAMES glog PATHS ${SEARCH_LIBS}) | 
 | IF (NOT EXISTS ${GLOG_LIB}) | 
 |   MESSAGE(FATAL_ERROR | 
 |           "Can't find Google Log. Please specify: " | 
 |           "-DGLOG_LIB=...") | 
 | ENDIF (NOT EXISTS ${GLOG_LIB}) | 
 | MESSAGE("-- Found Google Log library: ${GLOG_LIB}") | 
 |  | 
 | FIND_PATH(GLOG_INCLUDE NAMES glog/logging.h PATHS ${SEARCH_HEADERS}) | 
 | IF (NOT EXISTS ${GLOG_INCLUDE}) | 
 |   MESSAGE(FATAL_ERROR | 
 |           "Can't find Google Log. Please specify: " | 
 |           "-DGLOG_INCLUDE=...") | 
 | ENDIF (NOT EXISTS ${GLOG_INCLUDE}) | 
 | MESSAGE("-- Found Google Log header in: ${GLOG_INCLUDE}") | 
 |  | 
 | # Eigen | 
 | MESSAGE("-- Check for Eigen 3.x") | 
 | FIND_PATH(EIGEN_INCLUDE NAMES Eigen/Core PATHS ${EIGEN_SEARCH_HEADERS}) | 
 | IF (NOT EXISTS ${EIGEN_INCLUDE}) | 
 |   MESSAGE(FATAL_ERROR "Can't find Eigen. Try passing -DEIGEN_INCLUDE=...") | 
 | ENDIF (NOT EXISTS ${EIGEN_INCLUDE}) | 
 | MESSAGE("-- Found Eigen 3.x: ${EIGEN_INCLUDE}") | 
 |  | 
 |  | 
 | INCLUDE_DIRECTORIES( | 
 |   ${GLOG_INCLUDE} | 
 |   ${EIGEN_INCLUDE} | 
 |   ) |