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# Copyright (c) 2023, ETH Zurich and UNC Chapel Hill.
# All rights reserved.
#
# 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 ETH Zurich and UNC Chapel Hill 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 HOLDERS 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.
# Find package module for FLANN library.
#
# The following variables are set by this module:
#
# FLANN_FOUND: TRUE if FLANN is found.
# flann: Imported target to link against.
#
# The following variables control the behavior of this module:
#
# FLANN_INCLUDE_DIR_HINTS: List of additional directories in which to
# search for FLANN includes.
# FLANN_LIBRARY_DIR_HINTS: List of additional directories in which to
# search for FLANN libraries.
set(FLANN_INCLUDE_DIR_HINTS "" CACHE PATH "FLANN include directory")
set(FLANN_LIBRARY_DIR_HINTS "" CACHE PATH "FLANN library directory")
unset(FLANN_FOUND)
unset(FLANN_INCLUDE_DIRS)
unset(FLANN_LIBRARIES)
list(APPEND FLANN_CHECK_INCLUDE_DIRS
${FLANN_INCLUDE_DIR_HINTS}
/usr/include
/usr/local/include
/opt/include
/opt/local/include
)
list(APPEND FLANN_CHECK_LIBRARY_DIRS
${FLANN_LIBRARY_DIR_HINTS}
/usr/lib
/usr/local/lib
/opt/lib
/opt/local/lib
)
find_path(FLANN_INCLUDE_DIRS
NAMES
flann/flann.hpp
PATHS
${FLANN_CHECK_INCLUDE_DIRS})
find_library(FLANN_LIBRARIES
NAMES
flann
PATHS
${FLANN_CHECK_LIBRARY_DIRS})
if(FLANN_INCLUDE_DIRS AND FLANN_LIBRARIES)
set(FLANN_FOUND TRUE)
endif()
if(FLANN_FOUND)
message(STATUS "Found FLANN")
message(STATUS " Includes : ${FLANN_INCLUDE_DIRS}")
message(STATUS " Libraries : ${FLANN_LIBRARIES}")
else()
if(FLANN_FIND_REQUIRED)
message(FATAL_ERROR "Could not find FLANN")
endif()
endif()
add_library(flann INTERFACE IMPORTED)
target_include_directories(
flann INTERFACE ${FLANN_INCLUDE_DIRS})
target_link_libraries(
flann INTERFACE ${FLANN_LIBRARIES})
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