Adding AliRoot as on optional dependency to AliceO2

Author: kouzinopoulos

CMakeLists.txt

@@ -43,6 +43,8 @@ endif(NOT ALICEO2_MODULAR_BUILD)
 
 find_package(FairRoot)
 
+find_package(AliRoot)
+
 # Load some basic macros which are needed later on
 include(FairMacros)
 include(WriteConfigFile)

cmake/modules/FindAliRoot.cmake

@@ -0,0 +1,41 @@
+# **************************************************************************
+# * Copyright(c) 1998-2015, ALICE Experiment at CERN, All rights reserved. *
+# *                                                                        *
+# * Author: The ALICE Off-line Project.                                    *
+# * Contributors are mentioned in the code where appropriate.              *
+# *                                                                        *
+# * Permission to use, copy, modify and distribute this software and its   *
+# * documentation strictly for non-commercial purposes is hereby granted   *
+# * without fee, provided that the above copyright notice appears in all   *
+# * copies and that both the copyright notice and this permission notice   *
+# * appear in the supporting documentation. The authors make no claims     *
+# * about the suitability of this software for any purpose. It is          *
+# * provided "as is" without express or implied warranty.                  *
+# **************************************************************************
+
+set(AliRoot_FOUND FALSE)
+
+if(ALIROOT)
+
+  # Check if AliRoot is really installed there
+  if(EXISTS ${ALIROOT}/bin/aliroot AND EXISTS ${ALIROOT}/lib AND EXISTS ${ALIROOT}/include)
+
+    include_directories(
+      ${ALIROOT}/include
+      ${ALIROOT}/include/pythia
+    )
+
+    link_directories(${ALIROOT}/lib)
+
+    set(AliRoot_FOUND TRUE)
+
+    message(STATUS "AliRoot ... - found ${ALIROOT}")
+
+  endif()
+endif(ALIROOT)
+
+if(NOT AliRoot_FOUND)
+  if(AliRoot_FIND_REQUIRED)
+    message(FATAL_ERROR "Please point to the AliRoot Core installation using -DALIROOT=<ALIROOT_CORE_INSTALL_DIR>")
+  endif(AliRoot_FIND_REQUIRED)
+endif(NOT AliRoot_FOUND)