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###############################################################################
#
# CMake module to search for LASzip library
#
# On success, the macro sets the following variables:
# LASZIP_FOUND = if the library found
# LASZIP_LIBRARIES = full path to the library
# LASZIP_INCLUDE_DIR = where to find the library headers also defined,
# but not for general use are
# LASZIP_LIBRARY = where to find the PROJ.4 library.
# LASZIP_VERSION = version of library which was found, e.g. "1.2.5"
#
# Copyright (c) 2009 Mateusz Loskot <mateusz@loskot.net>
#
# Module source: http://github.com/mloskot/workshop/tree/master/cmake/
#
# Redistribution and use is allowed according to the terms of the BSD license.
# For details see the accompanying COPYING-CMAKE-SCRIPTS file.
#
###############################################################################
MESSAGE(STATUS "Searching for LASzip ${LASzip_FIND_VERSION}+ library")
IF(LASZIP_INCLUDE_DIR)
# Already in cache, be silent
SET(LASZIP_FIND_QUIETLY TRUE)
ENDIF()
IF(WIN32)
SET(OSGEO4W_IMPORT_LIBRARY laszip)
IF(DEFINED ENV{OSGEO4W_ROOT})
SET(OSGEO4W_ROOT_DIR $ENV{OSGEO4W_ROOT})
MESSAGE(STATUS "Trying OSGeo4W using environment variable OSGEO4W_ROOT=$ENV{OSGEO4W_ROOT}")
ELSE()
SET(OSGEO4W_ROOT_DIR c:/OSGeo4W64)
MESSAGE(STATUS "Trying OSGeo4W using default location OSGEO4W_ROOT=${OSGEO4W_ROOT_DIR}")
ENDIF()
ENDIF()
FIND_PATH(LASZIP_INCLUDE_DIR
laszip.hpp
PATH_PREFIXES laszip
PATHS
/usr/include
/usr/local/include
${OSGEO4W_ROOT_DIR}/include
NO_DEFAULT_PATH)
SET(LASZIP_NAMES ${OSGEO4W_IMPORT_LIBRARY} laszip)
FIND_LIBRARY(LASZIP_LIBRARY
NAMES ${LASZIP_NAMES}
PATHS
/usr/lib
/usr/local/lib
${OSGEO4W_ROOT_DIR}/lib)
IF(LASZIP_FOUND)
SET(LASZIP_LIBRARIES ${LASZIP_LIBRARY})
ENDIF()
IF(LASZIP_INCLUDE_DIR)
SET(LASZIP_VERSION 0)
SET(LASZIP_VERSION_H "${LASZIP_INCLUDE_DIR}/laszip/laszip.hpp")
FILE(READ ${LASZIP_VERSION_H} LASZIP_VERSION_H_CONTENTS)
IF (DEFINED LASZIP_VERSION_H_CONTENTS)
string(REGEX REPLACE ".*#define[ \t]LASZIP_VERSION_MAJOR[ \t]+([0-9]+).*" "\\1" LASZIP_VERSION_MAJOR "${LASZIP_VERSION_H_CONTENTS}")
string(REGEX REPLACE ".*#define[ \t]LASZIP_VERSION_MINOR[ \t]+([0-9]+).*" "\\1" LASZIP_VERSION_MINOR "${LASZIP_VERSION_H_CONTENTS}")
string(REGEX REPLACE ".*#define[ \t]LASZIP_VERSION_REVISION[ \t]+([0-9]+).*" "\\1" LASZIP_VERSION_REVISION "${LASZIP_VERSION_H_CONTENTS}")
if(NOT ${LASZIP_VERSION_MAJOR} MATCHES "[0-9]+")
message(FATAL_ERROR "LASzip version parsing failed for LASZIP_VERSION_MAJOR!")
endif()
if(NOT ${LASZIP_VERSION_MINOR} MATCHES "[0-9]+")
message(FATAL_ERROR "LASzip version parsing failed for LASZIP_VERSION_MINOR!")
endif()
if(NOT ${LASZIP_VERSION_REVISION} MATCHES "[0-9]+")
message(FATAL_ERROR "LASzip version parsing failed for LASZIP_VERSION_REVISION!")
endif()
SET(LASZIP_VERSION "${LASZIP_VERSION_MAJOR}.${LASZIP_VERSION_MINOR}.${LASZIP_VERSION_REVISION}"
CACHE INTERNAL "The version string for LASzip library")
IF (LASZIP_VERSION VERSION_EQUAL LASzip_FIND_VERSION OR
LASZIP_VERSION VERSION_GREATER LASzip_FIND_VERSION)
MESSAGE(STATUS "Found LASzip version: ${LASZIP_VERSION}")
ELSE()
MESSAGE(FATAL_ERROR "LASzip version check failed. Version ${LASZIP_VERSION} was found, at least version ${LASzip_FIND_VERSION} is required")
ENDIF()
ELSE()
MESSAGE(FATAL_ERROR "Failed to open ${LASZIP_VERSION_H} file")
ENDIF()
ENDIF()
# Handle the QUIETLY and REQUIRED arguments and set LASZIP_FOUND to TRUE
# if all listed variables are TRUE
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(LASzip DEFAULT_MSG LASZIP_LIBRARY LASZIP_INCLUDE_DIR)
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