Description:

g++ -march=x86-64 -mtune=generic -O2 -pipe -fstack-protector --param=ssp-buffer-size=4 -Wl,-O1,--sort-common,--as-needed,-z,relro -o nitrogen main.o SetBG.o Thumbview.o Config.o NWindow.o md5.o ArgParser.o ImageCombo.o Inotify.o Util.o NPrefsWindow.o -lglib-2.0 -lgtk-x11-2.0 -lgdk-x11-2.0 -lpangocairo-1.0 -latk-1.0 -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lfontconfig -lfreetype -lgtkmm-2.4 -latkmm-1.6 -lgtk-x11-2.0 -lgdkmm-2.4 -lgiomm-2.4 -lpangomm-1.4 -lglibmm-2.4 -lcairomm-1.0 -lsigc-2.0 -lgtk-x11-2.0 -lgdk-x11-2.0 -lpangocairo-1.0 -latk-1.0 -lcairo -lgdk_pixbuf-2.0 -lgio-2.0 -lpangoft2-1.0 -lpango-1.0 -lgobject-2.0 -lglib-2.0 -lfontconfig -lfreetype -lgthread-2.0 -pthread -lglib-2.0 -lXinerama
/usr/bin/ld: SetBG.o: undefined reference to symbol 'XFreeStringList'
/usr/lib/libX11.so.6: error adding symbols: DSO missing from command line
collect2: error: ld returned 1 exit status
Makefile:312: recipe for target 'nitrogen' failed
make[2]: *** [nitrogen] Error 1
make[2]: Leaving directory '/build/nitrogen/src/nitrogen-1.5.2/src'
Makefile:303: recipe for target 'all-recursive' failed
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory '/build/nitrogen/src/nitrogen-1.5.2'
Makefile:241: recipe for target 'all' failed
make: *** [all] Error 2
==> ERROR: A failure occurred in build().
Aborting...

Steps to reproduce:
sudo extra-x86_64-build