Update.

[bison.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index b63a9a204d3ce255daa59f597af2d3cacf1db2e6..19ff73b703809c65348c22985d72be49d6f89824 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -18,9 +18,9 @@
 # 02111-1307  USA
 
 # We need a recent Autoconf to run a recent Autotest.
-AC_PREREQ(2.54)
+AC_PREREQ(2.56)
 
-AC_INIT([GNU Bison], [1.875], [bug-bison@gnu.org])
+AC_INIT([GNU Bison], [1.875b], [bug-bison@gnu.org])
 AC_CONFIG_AUX_DIR(config)
 
 AM_INIT_AUTOMAKE([1.7 check-news readme-alpha dist-bzip2])
@@ -59,6 +59,21 @@ if test "${enableval}" = yes; then
   AC_DEFINE([lint], 1, [Define to 1 if the compiler is checking for lint.])
 fi
 
+AC_ARG_ENABLE([yacc],
+  [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=yacc
+  YACC_LIBRARY=liby.a;;
+*)
+  YACC_SCRIPT=
+  YACC_LIBRARY=;;
+esac
+AC_SUBST([YACC_SCRIPT])
+AC_SUBST([YACC_LIBRARY])
+
 # Checks for programs.
 AC_PROG_LEX
 AC_PROG_YACC