CMake/Modules/FindTIFF.cmake

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Simplify CMake per-source license notices Per-source copyright/license notice headers that spell out copyright holder names and years are hard to maintain and often out-of-date or plain wrong. Precise contributor information is already maintained automatically by the version control tool. Ultimately it is the receiver of a file who is responsible for determining its licensing status, and per-source notices are merely a convenience. Therefore it is simpler and more accurate for each source to have a generic notice of the license name and references to more detailed information on copyright holders and full license terms. Our `Copyright.txt` file now contains a list of Contributors whose names appeared source-level copyright notices. It also references version control history for more precise information. Therefore we no longer need to spell out the list of Contributors in each source file notice. Replace CMake per-source copyright/license notice headers with a short description of the license and links to `Copyright.txt` and online information available from "https://cmake.org/licensing". The online URL also handles cases of modules being copied out of our source into other projects, so we can drop our notices about replacing links with full license text. Run the `Utilities/Scripts/filter-notices.bash` script to perform the majority of the replacements mechanically. Manually fix up shebang lines and trailing newlines in a few files. Manually update the notices in a few files that the script does not handle.
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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:
# FindTIFF
# --------
#
# Find the TIFF library (libtiff).
#
# Imported targets
# ^^^^^^^^^^^^^^^^
#
# This module defines the following :prop_tgt:`IMPORTED` targets:
#
# ``TIFF::TIFF``
# The TIFF library, if found.
#
# Result variables
# ^^^^^^^^^^^^^^^^
#
# This module will set the following variables in your project:
#
# ``TIFF_FOUND``
# true if the TIFF headers and libraries were found
# ``TIFF_INCLUDE_DIR``
# the directory containing the TIFF headers
# ``TIFF_INCLUDE_DIRS``
# the directory containing the TIFF headers
# ``TIFF_LIBRARIES``
# TIFF libraries to be linked
#
# Cache variables
# ^^^^^^^^^^^^^^^
#
# The following cache variables may also be set:
#
# ``TIFF_INCLUDE_DIR``
# the directory containing the TIFF headers
# ``TIFF_LIBRARY``
# the path to the TIFF library
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find_path(TIFF_INCLUDE_DIR tiff.h)
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set(TIFF_NAMES ${TIFF_NAMES} tiff libtiff tiff3 libtiff3)
foreach(name ${TIFF_NAMES})
list(APPEND TIFF_NAMES_DEBUG "${name}d")
endforeach()
if(NOT TIFF_LIBRARY)
find_library(TIFF_LIBRARY_RELEASE NAMES ${TIFF_NAMES})
find_library(TIFF_LIBRARY_DEBUG NAMES ${TIFF_NAMES_DEBUG})
include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
select_library_configurations(TIFF)
mark_as_advanced(TIFF_LIBRARY_RELEASE TIFF_LIBRARY_DEBUG)
endif()
unset(TIFF_NAMES)
unset(TIFF_NAMES_DEBUG)
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if(TIFF_INCLUDE_DIR AND EXISTS "${TIFF_INCLUDE_DIR}/tiffvers.h")
file(STRINGS "${TIFF_INCLUDE_DIR}/tiffvers.h" tiff_version_str
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REGEX "^#define[\t ]+TIFFLIB_VERSION_STR[\t ]+\"LIBTIFF, Version .*")
string(REGEX REPLACE "^#define[\t ]+TIFFLIB_VERSION_STR[\t ]+\"LIBTIFF, Version +([^ \\n]*).*"
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"\\1" TIFF_VERSION_STRING "${tiff_version_str}")
unset(tiff_version_str)
endif()
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# handle the QUIETLY and REQUIRED arguments and set TIFF_FOUND to TRUE if
# all listed variables are TRUE
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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FIND_PACKAGE_HANDLE_STANDARD_ARGS(TIFF
REQUIRED_VARS TIFF_LIBRARY TIFF_INCLUDE_DIR
VERSION_VAR TIFF_VERSION_STRING)
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if(TIFF_FOUND)
set(TIFF_LIBRARIES ${TIFF_LIBRARY})
set(TIFF_INCLUDE_DIRS "${TIFF_INCLUDE_DIR}")
if(NOT TARGET TIFF::TIFF)
add_library(TIFF::TIFF UNKNOWN IMPORTED)
if(TIFF_INCLUDE_DIRS)
set_target_properties(TIFF::TIFF PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${TIFF_INCLUDE_DIRS}")
endif()
if(EXISTS "${TIFF_LIBRARY}")
set_target_properties(TIFF::TIFF PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "C"
IMPORTED_LOCATION "${TIFF_LIBRARY}")
endif()
if(EXISTS "${TIFF_LIBRARY_RELEASE}")
set_property(TARGET TIFF::TIFF APPEND PROPERTY
IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(TIFF::TIFF PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "C"
IMPORTED_LOCATION_RELEASE "${TIFF_LIBRARY_RELEASE}")
endif()
if(EXISTS "${TIFF_LIBRARY_DEBUG}")
set_property(TARGET TIFF::TIFF APPEND PROPERTY
IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(TIFF::TIFF PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES_DEBUG "C"
IMPORTED_LOCATION_DEBUG "${TIFF_LIBRARY_DEBUG}")
endif()
endif()
endif()
mark_as_advanced(TIFF_INCLUDE_DIR TIFF_LIBRARY)