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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file LICENSE.rst or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindJasper
----------
Finds the JasPer Image Coding Toolkit for handling image data in a variety of
formats, such as the JPEG-2000.
Imported Targets
^^^^^^^^^^^^^^^^
This module provides the following :ref:`Imported Targets`:
``Jasper::Jasper``
.. versionadded:: 3.22
Target encapsulating the JasPer library usage requirements, available only if
the library is found.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
``Jasper_FOUND``
Boolean indicating whether the JasPer is found. For backward compatibility,
the ``JASPER_FOUND`` variable is also set to the same value.
``JASPER_INCLUDE_DIRS``
.. versionadded:: 3.22
The include directories needed to use the JasPer library.
``JASPER_LIBRARIES``
The libraries needed to use JasPer.
``JASPER_VERSION_STRING``
The version of JasPer found.
Cache Variables
^^^^^^^^^^^^^^^
The following cache variables may also be set:
``JASPER_INCLUDE_DIR``
The directory containing the ``jasper/jasper.h`` and other headers needed to
use the JasPer library.
``JASPER_LIBRARY_RELEASE``
The path to the release (optimized) variant of the JasPer library.
``JASPER_LIBRARY_DEBUG``
The path to the debug variant of the JasPer library.
Examples
^^^^^^^^
Finding the JasPer library and linking it to a project target:
.. code-block:: cmake
find_package(Jasper)
target_link_libraries(project_target PRIVATE Jasper::Jasper)
#]=======================================================================]
cmake_policy(PUSH)
cmake_policy(SET CMP0159 NEW) # file(STRINGS) with REGEX updates CMAKE_MATCH_<n>
find_path(JASPER_INCLUDE_DIR jasper/jasper.h)
mark_as_advanced(JASPER_INCLUDE_DIR)
if(NOT JASPER_LIBRARIES)
find_package(JPEG QUIET)
find_library(JASPER_LIBRARY_RELEASE NAMES jasper libjasper)
find_library(JASPER_LIBRARY_DEBUG NAMES jasperd)
include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
select_library_configurations(JASPER)
endif()
if(JASPER_INCLUDE_DIR AND EXISTS "${JASPER_INCLUDE_DIR}/jasper/jas_config.h")
file(STRINGS "${JASPER_INCLUDE_DIR}/jasper/jas_config.h" jasper_version_str REGEX "^#define[\t ]+JAS_VERSION[\t ]+\".*\".*")
string(REGEX REPLACE "^#define[\t ]+JAS_VERSION[\t ]+\"([^\"]+)\".*" "\\1" JASPER_VERSION_STRING "${jasper_version_str}")
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Jasper
REQUIRED_VARS JASPER_LIBRARIES JASPER_INCLUDE_DIR
VERSION_VAR JASPER_VERSION_STRING)
if(Jasper_FOUND)
set(JASPER_LIBRARIES ${JASPER_LIBRARIES})
if(JPEG_FOUND)
list(APPEND JASPER_LIBRARIES ${JPEG_LIBRARIES})
endif()
set(JASPER_INCLUDE_DIRS ${JASPER_INCLUDE_DIR})
if(NOT TARGET Jasper::Jasper)
add_library(Jasper::Jasper UNKNOWN IMPORTED)
if(JASPER_INCLUDE_DIRS)
set_target_properties(Jasper::Jasper PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${JASPER_INCLUDE_DIRS}")
endif()
if(EXISTS "${JASPER_LIBRARY_RELEASE}")
set_property(TARGET Jasper::Jasper APPEND PROPERTY
IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(Jasper::Jasper PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "C"
IMPORTED_LOCATION_RELEASE "${JASPER_LIBRARY_RELEASE}")
endif()
if(EXISTS "${JASPER_LIBRARY_DEBUG}")
set_property(TARGET Jasper::Jasper APPEND PROPERTY
IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(Jasper::Jasper PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES_DEBUG "C"
IMPORTED_LOCATION_DEBUG "${JASPER_LIBRARY_DEBUG}")
endif()
endif()
endif()
cmake_policy(POP)
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