From 2abb4654c4ece8948128c62323ec9464190481a7 Mon Sep 17 00:00:00 2001
From: David Lawrence <davidl@jlab.org>
Date: Thu, 14 Jul 2022 12:51:18 +0000
Subject: [PATCH] Allow user to turn off DDG4 requirement.
---
CMakeLists.txt | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index ff2018b..66bf085 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -31,8 +31,20 @@ endif()
# Export compile commands as json for run-clang-tidy
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+# Set required DD4hep components based on user input
+set(USE_DDG4 "TRUE" CACHE BOOL "Require DD4hep DDG4 component")
+set(DD4hep_required_components DDCore DDRec)
+if(${USE_DDG4})
+ list(APPEND DD4hep_required_components DDG4)
+endif()
+
+# The items passed to target_link_libraries below need DD4hep:: prepended
+set(DD4hep_required_libraries ${DD4hep_required_components})
+list(TRANSFORM DD4hep_required_libraries PREPEND DD4hep::)
+
+
# Dependencies
-find_package(DD4hep REQUIRED COMPONENTS DDCore DDG4)
+find_package(DD4hep REQUIRED COMPONENTS ${DD4hep_required_components})
find_package(ActsDD4hep)
if(ActsDD4hep_FOUND)
add_compile_definitions(USE_ACTSDD4HEP)
@@ -54,7 +66,7 @@ dd4hep_add_plugin(${a_lib_name}
USES ${ActsDD4hep} ROOT::Core ROOT::Gdml
)
target_link_libraries(${a_lib_name}
- PUBLIC DD4hep::DDCore DD4hep::DDRec DD4hep::DDG4
+ PUBLIC ${DD4hep_required_libraries}
)
#-----------------------------------------------------------------------------------
--
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