It doesnt matter if MARK64 gets set in the configure file as the toplevel
makefile is the only thing that uses it ... plus we avoid re-running autotools

--- popt-1.10.4/Makefile.in
+++ popt-1.10.4/Makefile.in
@@ -35,7 +35,7 @@
 
 TESTS = testit.sh
 include_HEADERS = popt.h
-usrlibdir = $(libdir)@MARK64@
+usrlibdir = $(libdir)
 usrlib_LTLIBRARIES = libpopt.la
 libpopt_la_SOURCES = popt.c findme.c poptparse.c poptconfig.c popthelp.c
 libpopt_la_LDFLAGS = -no-undefined @INTLLIBS@ $(am__append_1)