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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindGDAL
--------
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
#]=======================================================================]
#
# $GDALDIR is an environment variable that would
# correspond to the ./configure --prefix=$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
include/gdal
include/GDAL
include
)
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
)
if(GDAL_CONFIG)
exec_program(${GDAL_CONFIG} ARGS --libs OUTPUT_VARIABLE GDAL_CONFIG_LIBS)
if(GDAL_CONFIG_LIBS)
# treat the output as a command line and split it up
separate_arguments(args NATIVE_COMMAND "${GDAL_CONFIG_LIBS}")
# only consider libraries whose name matches this pattern
set(name_pattern "[gG][dD][aA][lL]")
# consider each entry as a possible library path, name, or parent directory
foreach(arg IN LISTS args)
# library name
if("${arg}" MATCHES "^-l(.*)$")
set(lib "${CMAKE_MATCH_1}")
# only consider libraries whose name matches the expected pattern
if("${lib}" MATCHES "${name_pattern}")
list(APPEND _gdal_lib "${lib}")
endif()
# library search path
elseif("${arg}" MATCHES "^-L(.*)$")
list(APPEND _gdal_libpath "${CMAKE_MATCH_1}")
# assume this is a full path to a library
elseif(IS_ABSOLUTE "${arg}" AND EXISTS "${arg}")
# extract the file name
get_filename_component(lib "${arg}" NAME)
# only consider libraries whose name matches the expected pattern
if(NOT "${lib}" MATCHES "${name_pattern}")
continue()
endif()
# extract the file directory
get_filename_component(dir "${arg}" DIRECTORY)
# remove library prefixes/suffixes
string(REGEX REPLACE "^(${CMAKE_SHARED_LIBRARY_PREFIX}|${CMAKE_STATIC_LIBRARY_PREFIX})" "" lib "${lib}")
string(REGEX REPLACE "(${CMAKE_SHARED_LIBRARY_SUFFIX}|${CMAKE_STATIC_LIBRARY_SUFFIX})$" "" lib "${lib}")
# use the file name and directory as hints
list(APPEND _gdal_libpath "${dir}")
list(APPEND _gdal_lib "${lib}")
endif()
endforeach()
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
${_gdal_libpath}
PATH_SUFFIXES lib
)
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(GDAL DEFAULT_MSG GDAL_LIBRARY GDAL_INCLUDE_DIR)
set(GDAL_LIBRARIES ${GDAL_LIBRARY})
set(GDAL_INCLUDE_DIRS ${GDAL_INCLUDE_DIR})
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