From d0333d25abb84400e5003065d28f9c5bac1cbbd8 Mon Sep 17 00:00:00 2001
From: Markus Frank <Markus.Frank@cern.ch>
Date: Mon, 9 Jan 2023 17:44:01 +0100
Subject: [PATCH] Fix compile error

---
 DDDigi/CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/DDDigi/CMakeLists.txt b/DDDigi/CMakeLists.txt
index 7f0e28b15..a6c247bd1 100644
--- a/DDDigi/CMakeLists.txt
+++ b/DDDigi/CMakeLists.txt
@@ -50,7 +50,7 @@ dd4hep_add_plugin(DDDigiPlugins
 set(DDDigiIO_USES        "DD4hep::DDDigi;DD4hep::DDCore")
 set(DDDigiIO_SOURCES     "io/DigiIO.cpp;io/Digi2ROOT.cpp")
 set(DDDigiIO_GENERATED)
-set(DDDigiIO_DEFINITIONS)
+set(DDDigiIO_DEFINITIONS "DD4HEP_BUILD_DDDIGI_IO=1")
 if(DD4HEP_USE_GEANT4)
   list(APPEND DDDigiIO_DEFINITIONS "DD4HEP_USE_DDG4=1")
   dd4hep_add_dictionary(G__DDDigi_DDG4_IO
-- 
GitLab