--- acinclude.m4
+++ acinclude.m4
@@ -3,21 +3,26 @@ dnl		 [, ACTION-IF-NOT-FOUND  [, OTHER-L
 dnl Like AC_CHECK_LIB but looking for static libraries.
 dnl LIBRARY must be of the form libxxx.a.
 dnl The current language must be C (AC_LANG_C).
-AC_DEFUN(AC_CHECK_STATICLIB,
+AC_DEFUN([AC_CHECK_STATICLIB],
 [AC_MSG_CHECKING([for $2 in $1])
 dnl Use a cache variable name containing both the library and function name,
 dnl because the test really is for library $1 defining function $2, not
 dnl just for library $1.  Separate tests with the same $1 and different $2s
 dnl may have different results.
 ac_lib_var=`echo $1['_']$2 | sed 'y%./+-%__p_%'`
-AC_CACHE_VAL(ac_cv_lib_static_$ac_lib_var,
+AC_CACHE_VAL(ac_cv_lib_static_$ac_lib_var, [
+if test "$libdir" != "${exec_prefix}/lib"; then 
+  case $libdir in *64)
+    libsuffix=64
+  esac
+fi
 if test -r /etc/ld.so.conf ; then
-  ld_so_paths="/lib /usr/lib `cat /etc/ld.so.conf`"
+  ld_so_paths="/lib${libsuffix} /usr/lib${libsuffix} `cat /etc/ld.so.conf`"
 else
-  ld_so_paths="/lib /usr/lib"
+  ld_so_paths="/lib${libsuffix} /usr/lib${libsuffix}"
 fi
 for path in $ld_so_paths; do
-  [ac_save_LIBS="$LIBS"
+  ac_save_LIBS="$LIBS"
   LIBS="$path/$1 $5 $LIBS"
   AC_TRY_LINK(dnl
   ifelse([$2], [main], , dnl Avoid conflicting decl of main.