CMake/Modules/FindXercesC.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names and years are hard to maintain and often out-of-date or plain wrong.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

131 lines
4.8 KiB
CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#.rst:
# FindXercesC
# -----------
#
# Find the Apache Xerces-C++ validating XML parser headers and libraries.
#
# Imported targets
# ^^^^^^^^^^^^^^^^
#
# This module defines the following :prop_tgt:`IMPORTED` targets:
#
# ``XercesC::XercesC``
# The Xerces-C++ ``xerces-c`` library, if found.
#
# Result variables
# ^^^^^^^^^^^^^^^^
#
# This module will set the following variables in your project:
#
# ``XercesC_FOUND``
# true if the Xerces headers and libraries were found
# ``XercesC_VERSION``
# Xerces release version
# ``XercesC_INCLUDE_DIRS``
# the directory containing the Xerces headers
# ``XercesC_LIBRARIES``
# Xerces libraries to be linked
#
# Cache variables
# ^^^^^^^^^^^^^^^
#
# The following cache variables may also be set:
#
# ``XercesC_INCLUDE_DIR``
# the directory containing the Xerces headers
# ``XercesC_LIBRARY``
# the Xerces library
# Written by Roger Leigh <rleigh@codelibre.net>
function(_XercesC_GET_VERSION version_hdr)
file(STRINGS ${version_hdr} _contents REGEX "^[ \t]*#define XERCES_VERSION_.*")
if(_contents)
string(REGEX REPLACE ".*#define XERCES_VERSION_MAJOR[ \t]+([0-9]+).*" "\\1" XercesC_MAJOR "${_contents}")
string(REGEX REPLACE ".*#define XERCES_VERSION_MINOR[ \t]+([0-9]+).*" "\\1" XercesC_MINOR "${_contents}")
string(REGEX REPLACE ".*#define XERCES_VERSION_REVISION[ \t]+([0-9]+).*" "\\1" XercesC_PATCH "${_contents}")
if(NOT XercesC_MAJOR MATCHES "^[0-9]+$")
message(FATAL_ERROR "Version parsing failed for XERCES_VERSION_MAJOR!")
endif()
if(NOT XercesC_MINOR MATCHES "^[0-9]+$")
message(FATAL_ERROR "Version parsing failed for XERCES_VERSION_MINOR!")
endif()
if(NOT XercesC_PATCH MATCHES "^[0-9]+$")
message(FATAL_ERROR "Version parsing failed for XERCES_VERSION_REVISION!")
endif()
set(XercesC_VERSION "${XercesC_MAJOR}.${XercesC_MINOR}.${XercesC_PATCH}" PARENT_SCOPE)
else()
message(FATAL_ERROR "Include file ${version_hdr} does not exist or does not contain expected version information")
endif()
endfunction()
# Find include directory
find_path(XercesC_INCLUDE_DIR
NAMES "xercesc/util/PlatformUtils.hpp"
DOC "Xerces-C++ include directory")
mark_as_advanced(XercesC_INCLUDE_DIR)
if(NOT XercesC_LIBRARY)
# Find all XercesC libraries
find_library(XercesC_LIBRARY_RELEASE
NAMES "xerces-c" "xerces-c_3"
DOC "Xerces-C++ libraries (release)")
find_library(XercesC_LIBRARY_DEBUG
NAMES "xerces-cd" "xerces-c_3D" "xerces-c_3_1D"
DOC "Xerces-C++ libraries (debug)")
include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
select_library_configurations(XercesC)
mark_as_advanced(XercesC_LIBRARY_RELEASE XercesC_LIBRARY_DEBUG)
endif()
if(XercesC_INCLUDE_DIR)
_XercesC_GET_VERSION("${XercesC_INCLUDE_DIR}/xercesc/util/XercesVersion.hpp")
endif()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(XercesC
FOUND_VAR XercesC_FOUND
REQUIRED_VARS XercesC_LIBRARY
XercesC_INCLUDE_DIR
XercesC_VERSION
VERSION_VAR XercesC_VERSION
FAIL_MESSAGE "Failed to find XercesC")
if(XercesC_FOUND)
set(XercesC_INCLUDE_DIRS "${XercesC_INCLUDE_DIR}")
set(XercesC_LIBRARIES "${XercesC_LIBRARY}")
# For header-only libraries
if(NOT TARGET XercesC::XercesC)
add_library(XercesC::XercesC UNKNOWN IMPORTED)
if(XercesC_INCLUDE_DIRS)
set_target_properties(XercesC::XercesC PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${XercesC_INCLUDE_DIRS}")
endif()
if(EXISTS "${XercesC_LIBRARY}")
set_target_properties(XercesC::XercesC PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES "CXX"
IMPORTED_LOCATION "${XercesC_LIBRARY}")
endif()
if(EXISTS "${XercesC_LIBRARY_RELEASE}")
set_property(TARGET XercesC::XercesC APPEND PROPERTY
IMPORTED_CONFIGURATIONS RELEASE)
set_target_properties(XercesC::XercesC PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "CXX"
IMPORTED_LOCATION_RELEASE "${XercesC_LIBRARY_RELEASE}")
endif()
if(EXISTS "${XercesC_LIBRARY_DEBUG}")
set_property(TARGET XercesC::XercesC APPEND PROPERTY
IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(XercesC::XercesC PROPERTIES
IMPORTED_LINK_INTERFACE_LANGUAGES_DEBUG "CXX"
IMPORTED_LOCATION_DEBUG "${XercesC_LIBRARY_DEBUG}")
endif()
endif()
endif()