# **************************************************************************
# * 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.                  *
# **************************************************************************

############################################################################
# GENERAL SETTINGS                                                         #
############################################################################

# CMake configuration is controlled through CMakeLists files.
#   - Normally a single CMakeLists files should contain a single target/library.
#   - The file below tries to offer a standard format for generating libraries
#     but full access to cmake functions and utilities is possible.
#    - For any customization please use instructions provided by the minum cmake 
#     version 2.8.11
#     http://www.cmake.org/cmake/help/v2.8.11/cmake.html

# Module name
# Module name translates into library name
# Ex: set(MODULE ANALYSIS)
set(MODULE ModuleNameExample)

# Module include folder
#  - Add here all include folders containing headers that belong
#    to this module. 
#  - Do not add dependencies here
#  - If you are not sure how to proceed please contact aliroot-git-admins@cern.ch
# For more information about include_directories please read 
# documentation for minimum required version:
# http://www.cmake.org/cmake/help/v2.8.11/cmake.html#command:include_directories
# Ex: include_directories(${AliRoot_SOURCE_DIR}/ANALYS/${MODULE})
include_directories()

# Additional include folders in alphabetical order except ROOT
#  - ROOT include folders are added by the FindROOT macro
#  - To remove compilation warnings related to dependencies headers
#    please add them as SYSTEM headers.
#  - If you are not sure how to proceed please contact aliroot-git-admins@cern.ch
# For more information about include_directories please read 
# documentation for minimum required version:
# http://www.cmake.org/cmake/help/v2.8.11/cmake.html#command:include_directories
# Ex: include_directories(${AliRoot_SOURCE_DIR}/STEER/STEERBase
#                   )
include_directories(
                   )

# Library sources in alphabetical order
#  - Only these sources will be added to the library
#  - If you are not sure how to proceed please contact aliroot-git-admins@cern.ch
# Ex:
#set(SRCS
#    AliAnalysisDataContainer.cxx
#    AliAnalysisDataSlot.cxx
#   )
set(SRCS
   )

# Headers generated from sources list
#  - This list is used mainly during dictionary generating and installation step,
#    all source headers will be installed into $CMAKE_INSTALL_PREFIX/include
#  - Note that it is possible to create your own custom list of headers, to add
#    to the existing one or to delete from it. Change this variable as it suits
#    the purpose of the library, but be sure you do not affect the dictionary 
#    generation
#  - If you are not sure how to proceed please contact aliroot-git-admins@cern.ch
string(REPLACE ".cxx" ".h" HDRS "${SRCS}")

# Additional headers, with no corresponding sources
#  - Instead of adding headers to the HDRS variable with the string(REPLACE)
#    command above, you can use a separate list
#  - With this optional command, headers are appended to the HDRS list
#  - Those headers will be installed in the include directory during the
#    installation process
#list(APPEND HDRS "header1.h" "header2.h" "header3.h")

# Generating the dictionary
#  - The name of the LinkDef has to be "${MODULE}LinkDef.h"
#  - Using custom LinkDef names is for advanced users! If you are not sure
#    how to generate the dictionary please contact aliroot-git-admins@cern.ch
#  - If you are not sure how to proceed please contact aliroot-git-admins@cern.ch
get_directory_property(incdirs INCLUDE_DIRECTORIES)
generate_dictionary("${MODULE}" "${MODULE}LinkDef.h" "${HDRS}" "${incdirs}")
# End Generation the dictionary

# Seting ROOT and AliRoot dependecies
#  - Any ROOT symbols used in the current sources has to be added to the list of 
#    dependecies. 
#  - The mapping between ROOT symbols and libraries can be found inside the ROOT
#    map files. If you are not sure which library contains a certain symbol grep
#    the rootmap files for the symbol:
# Ex:
#       $ cd $ROOTSYS/lib
#       $ grep TSelectorCint *.rootmap
#         libTree.rootmap:Library.TSelectorCint:                      libTree.so libNet.so libRIO.so libThread.so
#   TSelectorCint symbol belongs to Tree library and we add it to ROOT_DEPENDENCIES
# Ex: set(ROOT_DEPENDENCIES Core Gpad Hist Net RIO Tree XMLParser)
# Ex: set(ALIROOT_DEPENDENCIES STEERBase ANALYSIS)
#  - If you are not sure how to proceed please contact aliroot-git-admins@cern.ch
set(ROOT_DEPENDENCIES)
set(ALIROOT_DEPENDENCIES)

# Generating the ROOT map
#  - If you are not sure how to proceed please contact aliroot-git-admins@cern.ch
set(LIBDEPS ${ROOT_DEPENDENCIES} ${ALIROOT_DEPENDENCIES})
generate_rootmap("${MODULE}" "${LIBDEPS}" "${CMAKE_CURRENT_SOURCE_DIR}/${MODULE}LinkDef.h")
# End Generating the ROOT map

# Generate a PARfile target for this library
#  - This command tells CMake to generate a target that, in turn, will generate a PARfile
#  - With a PARfile it's possible to override an AliRoot/AliPhysics library with our modified
#    version
#  - This "hotpatching" is useful if we want to test local modifications e.g. on the Grid without
#    pushing our commits
#  - There is a 1:1 correspondence between a library (e.g. libMODULE.so) and a PARfile
#    (e.g. MODULE.par): if we load remotely a PARfile for a certain library, we are going to
#    override only that library
#  - This command only generates a target: PARfiles are not generated automatically. If a library
#    is PARfile-enabled (condition achieved by using the command below), then the PARfile can be
#    created by:
#      cd <aliroot_build_dir>  # e.g. cd $ALICE_ROOT/../build
#      make MODULE.par
#      make install
#    The file MODULE.par will be found in $ALICE_ROOT/PARfiles/MODULE.par
#  - It is also possible to specify another string after "${LIBDEPS}", an optional parameter to tell
#    the PARfile that extra include paths (both relative to the current directory and absolute) are
#    needed in order to build the corresponding library
#add_target_parfile(${MODULE} "${SRCS}" "${HDRS}" "${MODULE}LinkDef.h" "${LIBDEPS}")
# End Generate a PARfile target for this library

############################################################################
# END GENERAL SETTINGS                                                     #
############################################################################


############################################################################
# COMPILATION AND LINKING CUSTOM FLAGS                                    #
############################################################################

# Setting custom compilation and linking flags
# Ex system dependent: Modify the way the library is build
#       if(${CMAKE_SYSTEM} MATCHES Darwin)
#               set(MODULE_LINK_FLAGS "-undefined dynamic_lookup")
#       endif(${CMAKE_SYSTEM} MATCHES Darwin)
#  - MODULE_COMPILE_FLAGS and MODULE_LINK_FLAGS will be used later for library
#    generation
#  - If you are not sure how to proceed please contact aliroot-git-admins@cern.ch
set(MODULE_COMPILE_FLAGS )
set(MODULE_LINK_FLAGS )

############################################################################
# END COMPILATION AND LINKING  CUSTOM FLAGS                                #
############################################################################


############################################################################
# LIBRARY CREATION                                                         #
############################################################################

# Two options are availabe when creating the libraries:
#       - dynamic only libraries
#       - dinamic and static libraries
#         Static libraries are by used the DAs. If you are sure the library will 
#         be used by the DAs it is mandatory to create the static version.
#  - Use only one of the options at a time, DO NOT FORGET to delete the content
#    that is not used

############################################################################
## 1. DYNAMIC LIBRARY CREATION - NO STATIC LIBRARY NEEDED                  #
############################################################################

# Create the dynamic library
#  - DELETE if static libraries are neded and follow Dynamic/Static libraries 
#    instructions
#  - DELETE the dynamic/static block if only dynamic libraries are needed
#  - If you are not sure how to proceed please contact aliroot-git-admins@cern.ch
add_library(${MODULE} SHARED ${SRCS} G__${MODULE}.cxx)

# Additional compilation flags
set_target_properties(${MODULE} PROPERTIES COMPILE_FLAGS ${MODULE_COMPILE_FLAGS})

# Additional linking flags
set_target_properties(${MODULE} PROPERTIES LINK_FLAGS ${MODULE_LINK_FLAGS})

# Link library to dependecies
target_link_libraries(${MODULE} ${LIBDEPS})

############################################################################
## END DYNAMIC LIBRARY CREATION - NO STATIC LIBRARY NEEDED                 #
############################################################################


############################################################################
## 2. DYNAMIC/STATIC LIBRARY CREATION                                      #
############################################################################

#  - If you are not sure how to proceed please contact aliroot-git-admins@cern.ch
#  - DELETE if no static libraries are needed
#  - Create an object to be reused in case of static libraries 
#    otherwise the sources will be compiled twice
add_library(${MODULE}-object OBJECT ${SRCS} G__${MODULE}.cxx)

#  - Add a library to the project using the object
add_library(${MODULE} SHARED $<TARGET_OBJECTS:${MODULE}-object>)

# Setting the correct headers for the object as gathered from the dependencies
target_include_directories(${MODULE}-object PUBLIC $<TARGET_PROPERTY:${MODULE},INCLUDE_DIRECTORIES>)
set_target_properties(${MODULE}-object PROPERTIES COMPILE_DEFINITIONS $<TARGET_PROPERTY:${MODULE},COMPILE_DEFINITIONS>)

# Additional compilation flags
set_target_properties(${MODULE}-object PROPERTIES COMPILE_FLAGS "")

# Additional linking flags
set_target_properties(${MODULE} PROPERTIES LINK_FLAGS ${MODULE_LINK_FLAGS})

# Link library to dependecies
target_link_libraries(${MODULE} ${LIBDEPS})

# Create the static library only if ALIROOT_STATIC variable is set
# ALIROOT_STATIC is automatically set by the DA flag
if(ALIROOT_STATIC)
    add_library(${MODULE}-static STATIC $<TARGET_OBJECTS:${MODULE}-object>)
    set_target_properties(${MODULE}-static PROPERTIES OUTPUT_NAME ${MODULE})

    # list of shared dependencies / the name of the variable containing the list of static ones
    generate_static_dependencies("${ALIROOT_DEPENDENCIES}" "STATIC_ALIROOT_DEPENDENCIES")
    target_link_libraries(${MODULE}-static ${STATIC_ALIROOT_DEPENDENCIES} Root RootExtra)

    # Public include folders that will be propagated to the dependecies
    target_include_directories(${MODULE}-static PUBLIC ${incdirs})
    
    set_target_properties(${MODULE}-static PROPERTIES LINK_FLAGS "-Wl,--whole-archive")

    # Installation
    install(TARGETS ${MODULE}-static
            ARCHIVE DESTINATION lib
            LIBRARY DESTINATION lib)
endif(ALIROOT_STATIC)

############################################################################
## END DYNAMIC/STATIC LIBRARY CREATION                                     #
############################################################################

############################################################################
# END LIBRARY CREATION                                                     #
############################################################################

############################################################################
# INSTALLATION                                                             #
############################################################################

# The installation step is copying files needed at runtime into CMAKE_INSTALL_PREFIX
# DO NOT forget to install all macros needed to run Grid jobs or any files that are
# needed as input.
#  - If you are not sure how to proceed please contact aliroot-git-admins@cern.ch

# Library installation into $CMAKE_INSTALL_PREFIX/lib
install(TARGETS ${MODULE}
        ARCHIVE DESTINATION lib
        LIBRARY DESTINATION lib)

# Header installation into $CMAKE_INSTALL_PREFIX/include
install(FILES ${HDRS} DESTINATION include)

# Macros installation
install(DIRECTORY macros DESTINATION ${MODULE})