Require bison to compile Wine.
diff --git a/configure.ac b/configure.ac
index c17b09f..8d6e8bd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -63,22 +63,23 @@
AC_SUBST(TOOLSDIR,$wine_cv_toolsdir)
AC_PATH_XTRA
-AC_PROG_YACC
AC_PROG_LEX
-dnl **** Just additional warning checks, since AC_PROG just sets 'yacc' even
+dnl **** Just additional warning checks, since AC_PROG just sets 'lex' even
dnl **** without one present.
-AC_CHECK_PROGS(XYACC,$YACC bison yacc,none)
-if test "$XYACC" = "none"
-then
- AC_MSG_ERROR([no suitable bison/yacc found. Please install the 'bison' package.])
-fi
AC_CHECK_PROGS(XLEX,$LEX flex lex,none)
if test "$XLEX" = "none"
then
AC_MSG_ERROR([no suitable lex found. Please install the 'flex' package.])
fi
+dnl Check for bison
+AC_CHECK_PROGS(BISON,bison,none)
+if test "$BISON" = "none"
+then
+ AC_MSG_ERROR([no suitable bison found. Please install the 'bison' package.])
+fi
+
AC_CHECK_TOOLS(AS,[gas as],as)
AC_CHECK_TOOL(LD,ld,ld)
AC_CHECK_TOOL(AR,ar,ar)
