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-rw-r--r--configure.ac2
1 files changed, 2 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index d09fec9d..355cf0b4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -659,5 +659,7 @@ CFLAGS="$SAVED_CFLAGS"
AC_SUBST(AM_LDFLAGS)
LDFLAGS="$SAVED_LDFLAGS"
+AC_PROG_YACC
+
# autoconf should create a Makefile.
AC_OUTPUT(Makefile)