CMake/Modules/FindCups.cmake
Brad King 86578eccf2 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names and years are hard to maintain and often out-of-date or plain wrong.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.
2016-09-27 15:14:44 -04:00

68 lines
2.5 KiB
CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#.rst:
# FindCups
# --------
#
# Try to find the Cups printing system
#
# Once done this will define
#
# ::
#
# CUPS_FOUND - system has Cups
# CUPS_INCLUDE_DIR - the Cups include directory
# CUPS_LIBRARIES - Libraries needed to use Cups
# CUPS_VERSION_STRING - version of Cups found (since CMake 2.8.8)
# Set CUPS_REQUIRE_IPP_DELETE_ATTRIBUTE to TRUE if you need a version which
# features this function (i.e. at least 1.1.19)
find_path(CUPS_INCLUDE_DIR cups/cups.h )
find_library(CUPS_LIBRARIES NAMES cups )
if (CUPS_INCLUDE_DIR AND CUPS_LIBRARIES AND CUPS_REQUIRE_IPP_DELETE_ATTRIBUTE)
include(${CMAKE_CURRENT_LIST_DIR}/CheckLibraryExists.cmake)
include(${CMAKE_CURRENT_LIST_DIR}/CMakePushCheckState.cmake)
cmake_push_check_state()
set(CMAKE_REQUIRED_QUIET ${Cups_FIND_QUIETLY})
# ippDeleteAttribute is new in cups-1.1.19 (and used by kdeprint)
CHECK_LIBRARY_EXISTS(cups ippDeleteAttribute "" CUPS_HAS_IPP_DELETE_ATTRIBUTE)
cmake_pop_check_state()
endif ()
if (CUPS_INCLUDE_DIR AND EXISTS "${CUPS_INCLUDE_DIR}/cups/cups.h")
file(STRINGS "${CUPS_INCLUDE_DIR}/cups/cups.h" cups_version_str
REGEX "^#[\t ]*define[\t ]+CUPS_VERSION_(MAJOR|MINOR|PATCH)[\t ]+[0-9]+$")
unset(CUPS_VERSION_STRING)
foreach(VPART MAJOR MINOR PATCH)
foreach(VLINE ${cups_version_str})
if(VLINE MATCHES "^#[\t ]*define[\t ]+CUPS_VERSION_${VPART}[\t ]+([0-9]+)$")
set(CUPS_VERSION_PART "${CMAKE_MATCH_1}")
if(CUPS_VERSION_STRING)
string(APPEND CUPS_VERSION_STRING ".${CUPS_VERSION_PART}")
else()
set(CUPS_VERSION_STRING "${CUPS_VERSION_PART}")
endif()
endif()
endforeach()
endforeach()
endif ()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
if (CUPS_REQUIRE_IPP_DELETE_ATTRIBUTE)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Cups
REQUIRED_VARS CUPS_LIBRARIES CUPS_INCLUDE_DIR CUPS_HAS_IPP_DELETE_ATTRIBUTE
VERSION_VAR CUPS_VERSION_STRING)
else ()
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Cups
REQUIRED_VARS CUPS_LIBRARIES CUPS_INCLUDE_DIR
VERSION_VAR CUPS_VERSION_STRING)
endif ()
mark_as_advanced(CUPS_INCLUDE_DIR CUPS_LIBRARIES)