expat: Re-write CMake build system for our needs

Hard-code production of a static library.  Rename to `cmexpat`.

Utilities/cmexpat/CMakeLists.txt

-# This file is copyrighted under the BSD-license for buildsystem files of KDE
-# copyright 2010, Patrick Spendrin <ps_ml@gmx.de>
-
-project(expat)
-
-cmake_minimum_required(VERSION 2.6)
-
 include(ConfigureChecks.cmake)
-
-include_directories(${CMAKE_BINARY_DIR} ${CMAKE_SOURCE_DIR}/lib)
-if(MSVC)
-    add_definitions(-D_CRT_SECURE_NO_WARNINGS -wd4996)
-endif(MSVC)
 if(WIN32)
-    add_definitions(-DCOMPILING_FOR_WINDOWS)
+  add_definitions(-DCOMPILING_FOR_WINDOWS)
 endif(WIN32)
 
-set(expat_SRCS
-    lib/xmlparse.c
-    lib/xmlrole.c
-    lib/xmltok.c 
-    lib/xmltok_impl.c 
-    lib/xmltok_ns.c
-)
-
-if(BUILD_shared)
-    set(_SHARED SHARED)
-    if(WIN32)
-        set(expat_SRCS ${expat_SRCS} lib/libexpat.def)
-    endif(WIN32)
-else(BUILD_shared)
-    set(_SHARED STATIC)
-    if(WIN32)
-        add_definitions(-DXML_STATIC)
-    endif(WIN32)
-endif(BUILD_shared)
+include_directories(
+  ${CMAKE_CURRENT_BINARY_DIR}
+  ${CMAKE_CURRENT_SOURCE_DIR}/lib
+  )
 
-add_library(expat ${_SHARED} ${expat_SRCS})
+add_library(cmexpat STATIC
+  lib/xmlparse.c
+  lib/xmlrole.c
+  lib/xmltok.c
+  lib/xmltok_impl.c
+  lib/xmltok_ns.c
+  )

Utilities/cmexpat/lib/expat_external.h

@@ -53,6 +53,8 @@
 #endif
 #endif  /* not defined XMLCALL */
 
+/* Build within CMake hard-codes use of a static library.  */
+#define XML_STATIC
 
 #if !defined(XML_STATIC) && !defined(XMLIMPORT)
 #ifndef XML_BUILDING_EXPAT