extract_xml_CPPFLAGS = $(libxml2_CFLAGS) $(AM_CPPFLAGS)
extract_xml_LDADD = $(libxml2_LIBS)
-pretty_xml_SOURCES = pretty_xml.c
+pretty_xml_SOURCES = pretty_xml.cpp
pretty_xml_CPPFLAGS = $(libxml2_CFLAGS) $(AM_CPPFLAGS)
pretty_xml_LDADD = $(libxml2_LIBS)