https://sourceforge.net/tracker/index.php?func=detail&aid=2218879&group_id=605&atid=300605

=== modified file 'Makefile.in'
--- Makefile.in	2008-12-08 18:15:58 +0000
+++ Makefile.in	2008-12-08 18:24:44 +0000
@@ -56,7 +56,7 @@
 EXEEXT=@EXEEXT@
 
 CONF_DIR=@sysconfdir@/
-PLUGIN_DIR=${libexecdir}/
+PLUGIN_DIR=${libexecdir}
 DICT_DIR=${datadir}/
 
 CC=		@CC@

=== modified file 'configure.in'
--- configure.in	2008-12-08 18:20:10 +0000
+++ configure.in	2008-12-08 18:24:03 +0000
@@ -295,12 +295,10 @@
 LIBEXECDIR=`eval3 $libexecdir`
 DATADIR=`eval3 $datadir`
 
-CPPFLAGS="$CPPFLAGS $XCPPFLAGS"
 CFLAGS="$CFLAGS $XCFLAGS"
 LDFLAGS="$LDFLAGS $XLDFLAGS"
 
 AC_SUBST(DICT_VERSION)
-AC_SUBST(CPPFLAGS)
 AC_SUBST(CFLAGS)
 AC_SUBST(USE_PLUGIN)
 AC_SUBST(EXEEXT)