xfprint uses some symbols from libX11, but does not directly link to it. 
This should be corrected. 

See https://fedoraproject.org/wiki/Features/ChangeInImplicitDSOLinking
for more info. 

The error(s):

/usr/bin/ld: xfprint4_manager-main.o: undefined reference to symbol 'XDefaultScreen'
/usr/bin/ld: note: 'XDefaultScreen' is defined in DSO /usr/lib64/libX11.so.6 so try adding it to the linker command line

/usr/bin/ld: xfprint4-main.o: undefined reference to symbol 'XDefaultScreen'
/usr/bin/ld: note: 'XDefaultScreen' is defined in DSO /usr/lib64/libX11.so.6 so try adding it to the linker command line

A hacky patch (you will want to add the -lX11 properly in autoconf files): 

diff -Nur xfprint-4.6.0.orig/xfprint/Makefile.in xfprint-4.6.0/xfprint/Makefile.in
--- xfprint-4.6.0.orig/xfprint/Makefile.in	2009-02-24 23:37:08.000000000 -0700
+++ xfprint-4.6.0/xfprint/Makefile.in	2010-02-14 15:32:17.000000000 -0700
@@ -168,7 +168,7 @@
 INTLTOOL_XML_NOMERGE_RULE = @INTLTOOL_XML_NOMERGE_RULE@
 INTLTOOL_XML_RULE = @INTLTOOL_XML_RULE@
 LD = @LD@
-LDFLAGS = @LDFLAGS@
+LDFLAGS = @LDFLAGS@ -lX11
 LIBOBJS = @LIBOBJS@
 LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
diff -Nur xfprint-4.6.0.orig/xfprint-manager/Makefile.in xfprint-4.6.0/xfprint-manager/Makefile.in
--- xfprint-4.6.0.orig/xfprint-manager/Makefile.in	2009-02-24 23:37:04.000000000 -0700
+++ xfprint-4.6.0/xfprint-manager/Makefile.in	2010-02-14 15:43:04.000000000 -0700
@@ -163,7 +163,7 @@
 INTLTOOL_XML_NOMERGE_RULE = @INTLTOOL_XML_NOMERGE_RULE@
 INTLTOOL_XML_RULE = @INTLTOOL_XML_RULE@
 LD = @LD@
-LDFLAGS = @LDFLAGS@
+LDFLAGS = @LDFLAGS@ -lX11
 LIBOBJS = @LIBOBJS@
 LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@