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-rw-r--r--configure.in9
1 files changed, 9 insertions, 0 deletions
diff --git a/configure.in b/configure.in
index f4f1e9b7..d1f953e2 100644
--- a/configure.in
+++ b/configure.in
@@ -17,6 +17,15 @@ AC_PROG_MAKE_SET
AC_PROG_LIBTOOL
AM_PROG_LIBTOOL
+AC_PROG_YACC
+
+AC_PROG_LEX
+if test "$LEX" != flex; then
+ LEX="$SHELL $missing_dir/missing flex"
+ AC_SUBST(LEX_OUTPUT_ROOT, lex.yy)
+ AC_SUBST(LEXLIB, '')
+fi
+
# Checks for emacs lisp path
AM_PATH_LISPDIR