+dnl Unfortunately, there is a bug in OS/2's tr, such that
+dnl tr ' ' '\n' introduces DOS-like line breaks, whereas tr '\n' ' '
+dnl only removes the Unix-like part of the introduced line break.
+SAMPLES_SUBDIRS="`echo $SAMPLES_SUBDIRS | tr -s ' ' | tr ' ' '\n' | sort | uniq | tr '\n' ' '| tr -d '\r'`"
+
+dnl makefile variables
+AC_SUBST(LEX_STEM)
+AC_SUBST(PATH_IFS)