Add XML_STATIC definition in xmp library to fix problems finding symbols. Link always with EXPAT_LIBARIES

xmpsdk/CMakeLists.txt

@@ -31,18 +31,14 @@ IF( EXIV2_ENABLE_XMP AND EXIV2_ENABLE_LIBXMP )
     check_include_file( "stdint.h"  EXV_HAVE_STDINT_H )
 
     ADD_LIBRARY( xmp STATIC ${XMPSRC} )
+    target_compile_definitions(xmp PUBLIC XML_STATIC)
 
     target_include_directories(xmp PRIVATE ${CMAKE_SOURCE_DIR}/xmpsdk/include)
     if (EXV_HAVE_STDINT_H)
         target_compile_definitions(xmp PRIVATE EXV_HAVE_STDINT_H)
     endif()
 
-    GET_TARGET_PROPERTY( XMPLIB xmp LOCATION )
+    TARGET_LINK_LIBRARIES(xmp ${EXPAT_LIBRARIES})
-    if ( NOT MSVC )
-        TARGET_LINK_LIBRARIES(xmp ${EXPAT_LIBRARIES})
-    else()
-        TARGET_LINK_LIBRARIES(xmp ${CMAKE_THREAD_LIBS_INIT} ${EXPAT_LIBRARIES})
-    endif()
     # 1119  Install libxmp.a for use by third party applications (Thanks, Emmanuel)
     INSTALL(TARGETS xmp ${INSTALL_TARGET_STANDARD_ARGS} )
 ENDIF()