--- liborcus-0.5.1.orig/src/Makefile.am
+++ liborcus-0.5.1/src/Makefile.am
@@ -39,6 +39,8 @@ orcus_xml_dump_LDADD = \
        liborcus/liborcus-@ORCUS_API_VERSION@.la
 
 orcus_xml_dump_CPPFLAGS = -I$(top_builddir)/lib/liborcus/liborcus.la $(COMMON_CPPFLAGS)
+orcus_xml_dump_LDFLAGS = -lboost_system
+
 
 # orcus-test-common
 
--- liborcus-0.5.1.orig/src/parser/Makefile.am
+++ liborcus-0.5.1/src/parser/Makefile.am
@@ -18,7 +18,7 @@ liborcus_parser_@ORCUS_API_VERSION@_la_S
        zip_archive.cpp \
        zip_archive_stream.cpp
 
-liborcus_parser_@ORCUS_API_VERSION@_la_LDFLAGS = -no-undefined
+liborcus_parser_@ORCUS_API_VERSION@_la_LDFLAGS = -no-undefined -lboost_system
 liborcus_parser_@ORCUS_API_VERSION@_la_LIBADD = \
         $(ZLIB_LIBS)