MAKEFILE_MD5=`find $srcdir -name GNUmakefile | grep -v '^./GNUmakefile$' | sort | md5sum | cut -b 1-32`
CONFIGURE_INPUT_MD5=`cat $srcdir/config.make.in $srcdir/config.hh.in $srcdir/GNUmakefile.in | md5sum | cut -b 1-32`
-
+CONFIGURE_OPTIONS_MD5=`echo "$@" | tr ' ' '\n' | sed 's/ */ /g' | grep '.' | sort -u | md5sum | cut -b 1-32`
CONFIGURE_CHECKSUM_FILE=configure.checksum
-CONFIGURE_CHECKSUM="$MAKEFILE_MD5$CONFIGURE_INPUT_MD5"
+CONFIGURE_CHECKSUM="$MAKEFILE_MD5$CONFIGURE_INPUT_MD5$CONFIGURE_OPTIONS_MD5"
if test `cat $CONFIGURE_CHECKSUM_FILE` = "$CONFIGURE_CHECKSUM" ; then
exit 0