[AC_HELP_STRING([--disable-yacc],
[do not build a yacc command or an -ly library])],
, [enable_yacc=yes])
-case $enable_yacc in
-yes)
- YACC_SCRIPT=src/yacc
- YACC_LIBRARY=lib/liby.a;;
-*)
- YACC_SCRIPT=
- YACC_LIBRARY=;;
-esac
-AC_SUBST([YACC_SCRIPT])
-AC_SUBST([YACC_LIBRARY])
+AM_CONDITIONAL([ENABLE_YACC], [test "$enable_yacc" = yes])
# Checks for programs.
AM_MISSING_PROG([DOT], [dot])