cmake HAVE_LIBXSLT examples

pyside/pyside-setup sources/shiboken6/ApiExtractor/CMakeLists.txt :114 

target_compile_definitions(apiextractor PUBLIC HAVE_LIBXSLT)

qtproject/pyside-pyside-setup sources/shiboken6/ApiExtractor/CMakeLists.txt :114 

target_compile_definitions(apiextractor PUBLIC HAVE_LIBXSLT)