From 52cc68433fab94852955c6d7f5c84e9572ab6658 Mon Sep 17 00:00:00 2001
From: Michael Davidsaver <mdavidsaver@gmail.com>
Date: Wed, 14 Sep 2022 11:20:27 -0700
Subject: [PATCH] COMMANDLINE_LIBRARY fallback to $(wildcard $(GNU_DIR)

---
 configure/toolchain.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/configure/toolchain.c b/configure/toolchain.c
index 2f76b475b..da4e8bb2c 100644
--- a/configure/toolchain.c
+++ b/configure/toolchain.c
@@ -45,5 +45,5 @@ COMMANDLINE_LIBRARY ?= READLINE
 COMMANDLINE_LIBRARY ?= EPICS
 #  endif
 #else
-COMMANDLINE_LIBRARY ?= EPICS
+COMMANDLINE_LIBRARY ?= $(strip $(if $(wildcard $(if $(GNU_DIR),$(GNU_DIR)/include/readline/readline.h)), READLINE, EPICS))
 #endif