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# Locate gdal
#
# This module accepts the following environment variables:
#
# GDAL_DIR or GDAL_ROOT - Specify the location of GDAL
#
# This module defines the following CMake variables:
#
# GDAL_FOUND - True if libgdal is found
# GDAL_LIBRARY - A variable pointing to the GDAL library
# GDAL_INCLUDE_DIR - Where to find the headers
#=============================================================================
# Copyright 2007-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distribute this file outside of CMake, substitute the full
# License text for the above reference.)
#
# $GDALDIR is an environment variable that would
# correspond to the ./configure --prefix=$GDAL_DIR
# used in building gdal.
#
# Created by Eric Wing. I'm not a gdal user, but OpenSceneGraph uses it
# for osgTerrain so I whipped this module together for completeness.
# I actually don't know the conventions or where files are typically
# placed in distros.
# Any real gdal users are encouraged to correct this (but please don't
# break the OS X framework stuff when doing so which is what usually seems
# to happen).
# This makes the presumption that you are include gdal.h like
#
#include "gdal.h"
find_path(GDAL_INCLUDE_DIR gdal.h
HINTS
ENV GDAL_DIR
ENV GDAL_ROOT
PATH_SUFFIXES
gdal
GDAL
gdal1
PATHS
/sw # Fink
/opt/local # DarwinPorts
/opt/csw # Blastwave
/opt
)
if(UNIX)
# Use gdal-config to obtain the library version (this should hopefully
# allow us to -lgdal1.x.y where x.y are correct version)
# For some reason, libgdal development packages do not contain
# libgdal.so...
find_program(GDAL_CONFIG gdal-config
HINTS
ENV GDAL_DIR
ENV GDAL_ROOT
PATH_SUFFIXES bin
PATHS
/sw # Fink
/opt/local # DarwinPorts
/opt/csw # Blastwave
/opt
)
if(GDAL_CONFIG)
execute_process(COMMAND ${GDAL_CONFIG} --libs OUTPUT_VARIABLE GDAL_CONFIG_LIBS)
if(GDAL_CONFIG_LIBS)
string(REGEX MATCHALL "-l[^ ]+" _gdal_dashl ${GDAL_CONFIG_LIBS})
string(REGEX REPLACE "-l" "" _gdal_lib "${_gdal_dashl}")
string(REGEX MATCHALL "-L[^ ]+" _gdal_dashL ${GDAL_CONFIG_LIBS})
string(REGEX REPLACE "-L" "" _gdal_libpath "${_gdal_dashL}")
endif()
endif()
endif()
find_library(GDAL_LIBRARY
NAMES ${_gdal_lib} gdal gdal_i gdal1.5.0 gdal1.4.0 gdal1.3.2 GDAL
HINTS
ENV GDAL_DIR
ENV GDAL_ROOT
${_gdal_libpath}
PATH_SUFFIXES lib
PATHS
/sw
/opt/local
/opt/csw
/opt
/usr/freeware
)
set(GDAL_LIBRARIES ${GDAL_LIBRARY})
set(GDAL_INCLUDE_DIRS ${GDAL_INCLUDE_DIR})
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(GDAL DEFAULT_MSG GDAL_LIBRARY GDAL_INCLUDE_DIR)
MARK_AS_ADVANCED(GDAL_LIBRARY GDAL_INCLUDE_DIR GDAL_CONFIG)
if(GDAL_FOUND)
FILE(READ ${GDAL_INCLUDE_DIR}/gdal_version.h gdal_version)
STRING(REGEX REPLACE "^.*GDAL_VERSION_MAJOR +([0-9]+).*$" "\\1" GDAL_VERSION_MAJOR "${gdal_version}")
STRING(REGEX REPLACE "^.*GDAL_VERSION_MINOR +([0-9]+).*$" "\\1" GDAL_VERSION_MINOR "${gdal_version}")
STRING(REGEX REPLACE "^.*GDAL_VERSION_REV +([0-9]+).*$" "\\1" GDAL_VERSION_REV "${gdal_version}")
MESSAGE(STATUS "Found GDAL ${GDAL_VERSION_MAJOR}.${GDAL_VERSION_MINOR}")
IF (GDAL_VERSION_MAJOR VERSION_LESS 3)
MESSAGE (FATAL_ERROR "GDAL ${GDAL_VERSION_MAJOR}.${GDAL_VERSION_MINOR} is not supported. Use 3.0 or higher.")
ENDIF()
endif()
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