FindXerces: New module to find Apache Xerces-C++

Help/manual/cmake-modules.7.rst

@@ -207,6 +207,7 @@ All Modules
    /module/FindWish
    /module/FindwxWidgets
    /module/FindwxWindows
+   /module/FindXerces
    /module/FindX11
    /module/FindXMLRPC
    /module/FindZLIB

Help/module/FindXerces.rst

@@ -0,0 +1 @@
+.. cmake-module:: ../../Modules/FindXerces.cmake

Modules/FindXerces.cmake

@@ -0,0 +1,85 @@
+#.rst:
+# FindXerces
+# ----------
+#
+# Find the Apache Xerces-C++ validating XML parser headers and libraries.
+#
+# This module reports information about the Xerces installation in
+# several variables.  General variables::
+#
+#   Xerces_FOUND - true if the Xerces headers and libraries were found
+#   Xerces_VERSION - Xerces release version
+#   Xerces_INCLUDE_DIRS - the directory containing the Xerces headers
+#   Xerces_LIBRARIES - Xerces libraries to be linked
+#
+# The following cache variables may also be set::
+#
+#   Xerces_INCLUDE_DIR - the directory containing the Xerces headers
+#   Xerces_LIBRARY - the Xerces library
+
+# Written by Roger Leigh <rleigh@codelibre.net>
+
+#=============================================================================
+# Copyright 2014 University of Dundee
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+function(_Xerces_GET_VERSION  version_hdr)
+    file(STRINGS ${version_hdr} _contents REGEX "^[ \t]*#define XERCES_VERSION_.*")
+    if(_contents)
+        string(REGEX REPLACE ".*#define XERCES_VERSION_MAJOR[ \t]+([0-9]+).*" "\\1" Xerces_MAJOR "${_contents}")
+        string(REGEX REPLACE ".*#define XERCES_VERSION_MINOR[ \t]+([0-9]+).*" "\\1" Xerces_MINOR "${_contents}")
+        string(REGEX REPLACE ".*#define XERCES_VERSION_REVISION[ \t]+([0-9]+).*" "\\1" Xerces_PATCH "${_contents}")
+
+        if(NOT Xerces_MAJOR MATCHES "^[0-9]+$")
+            message(FATAL_ERROR "Version parsing failed for XERCES_VERSION_MAJOR!")
+        endif()
+        if(NOT Xerces_MINOR MATCHES "^[0-9]+$")
+            message(FATAL_ERROR "Version parsing failed for XERCES_VERSION_MINOR!")
+        endif()
+        if(NOT Xerces_PATCH MATCHES "^[0-9]+$")
+            message(FATAL_ERROR "Version parsing failed for XERCES_VERSION_REVISION!")
+        endif()
+
+        set(Xerces_VERSION "${Xerces_MAJOR}.${Xerces_MINOR}.${Xerces_PATCH}" PARENT_SCOPE)
+    else()
+        message(FATAL_ERROR "Include file ${version_hdr} does not exist or does not contain expected version information")
+    endif()
+endfunction()
+
+# Find include directory
+find_path(Xerces_INCLUDE_DIR
+          NAMES "xercesc/util/PlatformUtils.hpp"
+          DOC "Xerces-C++ include directory")
+mark_as_advanced(Xerces_INCLUDE_DIR)
+
+# Find all Xerces libraries
+find_library(Xerces_LIBRARY "xerces-c"
+  DOC "Xerces-C++ libraries")
+mark_as_advanced(Xerces_LIBRARY)
+
+if(Xerces_INCLUDE_DIR)
+  _Xerces_GET_VERSION("${Xerces_INCLUDE_DIR}/xercesc/util/XercesVersion.hpp")
+endif()
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(Xerces
+                                  FOUND_VAR Xerces_FOUND
+                                  REQUIRED_VARS Xerces_LIBRARY
+                                                Xerces_INCLUDE_DIR
+                                                Xerces_VERSION
+                                  VERSION_VAR Xerces_VERSION
+                                  FAIL_MESSAGE "Failed to find Xerces")
+
+if(Xerces_FOUND)
+  set(Xerces_INCLUDE_DIRS "${Xerces_INCLUDE_DIR}")
+  set(Xerces_LIBRARIES "${Xerces_LIBRARY}")
+endif()