From 7ca25d3c888c56844877d194d91f1f47b69f323c Mon Sep 17 00:00:00 2001
From: Andrew Johnson <anj@anl.gov>
Date: Tue, 29 Jun 2021 21:59:57 -0500
Subject: [PATCH] Check module set EPICS_BASE in a RELEASE file

---
 configure/CONFIG | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/configure/CONFIG b/configure/CONFIG
index 1c1242858..df454b29b 100644
--- a/configure/CONFIG
+++ b/configure/CONFIG
@@ -16,6 +16,10 @@ ifneq ($(wildcard $(TOP)/configure/CONFIG_BASE_VERSION),)
   CONFIG = $(TOP)/configure
   BASE_TOP=YES
 else
+  ifneq ($(origin EPICS_BASE),file)
+    # Essential for the EPICS build system, see convertRelease.pl
+    $(error EPICS_BASE must be set in a configure/RELEASE file)
+  endif
   CONFIG ?= $(EPICS_BASE)/configure
 endif