From 2142a81bf99fef674994b19afc40fab52310fcc1 Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Tue, 29 Nov 2016 09:32:17 +0100
Subject: [PATCH] configure: higher precedence for $LEMON

---
 m4/psi/psi.m4 | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/m4/psi/psi.m4 b/m4/psi/psi.m4
index 4012ec1..63ed194 100644
--- a/m4/psi/psi.m4
+++ b/m4/psi/psi.m4
@@ -294,7 +294,10 @@ dnl PSI_LEMON()
 dnl Declare $LEMON precious, and check for a `lemon` in $PATH.
 AC_DEFUN(PSI_LEMON, [
 	AC_ARG_VAR(LEMON, The lemon parser generator of the SQLite project)
-	AC_PATH_PROG(LEMON, lemon, ./lemon)
+	if test -z "$LEMON"
+	then
+		AC_PATH_PROG(LEMON, lemon, ./lemon)
+	fi
 	PHP_SUBST(LEMON)
 ])
 
-- 
2.30.2