Allow disabling FairEventBuilder

The classes `FairEventBuilder` and `FairEventBuilderManager`,
originally introduced to enable event reconstruction
in time-based mode seem not to be used by any experiment.

Therefore, implemented `BUILD_EVENT_BUILDER` flag
in preparation to disable them.

Author: karabowi

CMakeLists.txt

@@ -115,6 +115,7 @@ ENDIF(NOT UNIX)
 option(BUILD_UNITTESTS "Build all unittests and add them as new tests" OFF)
 option(ENABLE_GEANT3_TESTING "Enable tests utilizing Geant3" OFF)
 option(BUILD_PROOF_SUPPORT "Support ROOT::Proof (deprecated)" OFF)
+option(BUILD_EVENT_BUILDER "Build FairEventBuild" ON)
 
 option(BUILD_ONLINE "Build the online library" ON)
 option(BUILD_MBS "Build MBS" OFF)

fairroot/base/CMakeLists.txt

@@ -9,8 +9,6 @@
 set(target Base)
 
 set(sources
-  event/FairEventBuilder.cxx
-  event/FairEventBuilderManager.cxx
   event/FairEventHeader.cxx
   event/FairFileHeader.cxx
   event/FairFileInfo.cxx
@@ -80,6 +78,13 @@ if(BUILD_PROOF_SUPPORT)
   )
 endif()
 
+if(BUILD_EVENT_BUILDER)
+  list(APPEND sources
+    event/FairEventBuilder.cxx
+    event/FairEventBuilderManager.cxx
+  )
+endif()
+
 fair_change_extensions_if_exists(.cxx .h FILES "${sources}" OUTVAR headers)
 
 add_library(${target} SHARED ${sources} ${headers})
@@ -129,6 +134,10 @@ if(BUILD_PROOF_SUPPORT)
   target_compile_definitions(${target} PRIVATE BUILD_PROOF_SUPPORT)
 endif()
 
+if(BUILD_EVENT_BUILDER)
+  target_compile_definitions(${target} PRIVATE BUILD_EVENT_BUILDER)
+endif()
+
 fairroot_target_root_dictionary(${target}
   HEADERS ${headers}
   LINKDEF LinkDef.h

fairroot/base/LinkDef.h

@@ -16,8 +16,6 @@
 #pragma link C++ class FairGeoParSet;
 #pragma link C++ class FairDetector+;
 //#pragma link C++ class FairDoubleHit+;
-#pragma link C++ class FairEventBuilder+;
-#pragma link C++ class FairEventBuilderManager+;
 #pragma link C++ class FairEventHeader+;
 #pragma link C++ class FairFileHeader+;
 #pragma link C++ class FairGeaneApplication+;
@@ -79,5 +77,9 @@
 #pragma link C++ class FairAnaSelector+;
 #pragma link C++ class FairRunAnaProof;
 #endif
+#ifdef BUILD_EVENT_BUILDER
+#pragma link C++ class FairEventBuilder+;
+#pragma link C++ class FairEventBuilderManager+;
+#endif
 
 #endif