[u/mrichter/AliRoot.git] / cmake / FindROOT.cmake

# **************************************************************************
# * Copyright(c) 1998-2014, 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.                  *
# **************************************************************************

# Checking for a proper ROOT installation based on the ROOTSYS variable
# received during configuration
# If proper root installation it is setting the following variables
# - ROOT_VERSION - ROOT version as reported by root-config
# - ROOT_VERSION_MAJOR
# - ROOT_VERSIOM_MINOR
# - ROOT_VERSION_PATCH
# - ROOT_CONFIG - path to root-config script
# - ROOT_CINT - path to rootcint executable
# - ROOT_LIBMAP - path to rlibmap executable
# - ROOT_FEATURES - list of build features for ROOT
# - ROOT_LIBDIR - full path to ROOT library folder
# - ROOT_ETCDIR - full path to the ROOT's configuration directory
# - ROOT_LIBRARIES - libraries needed for the package to be used
# - ROOT_GLIBRARIES - regular + GUI ROOT libraries + path to be used during linking
# - ROOT_INCLUDE_DIR - full path to ROOT include folder
# - ROOT_CXX_FLAGS - flags used by the C++ compiler for building ROOT
# - ROOT_HAS_LIBCXX - TRUE if ROOT was built against libc++ (as opposed to libstdc++)
# - ROOT_HAS_CXX11 - TRUE if ROOT was built with C++11 support
# - ROOT_HASALIEN - ROOT was built with AliEn support
# - ROOT_HASOPENGL - ROOT was built with OpenGL support
# - ROOT_HASXML - ROOT was built with XML support
# - ROOT_FORTRAN - fortran compiler

set(ROOT_FOUND FALSE)

if(ROOTSYS)
    message(STATUS "Checking for a proper ROOT installation in ${ROOTSYS}.")

    # Setting defaults
    set(ROOT_LIBDIR ${ROOTSYS}/lib)
    set(ROOT_INCLUDE_DIR ${ROOTSYS}/include)

    # Check for root-config scripts
    find_program(ROOT_CONFIG NAMES root-config PATHS ${ROOTSYS}/bin NO_DEFAULT_PATH)

    if(NOT ROOT_CONFIG)
        message(FATAL_ERROR "Could not find root-config script.")
    endif(NOT ROOT_CONFIG)
    mark_as_advanced(ROOT_CONFIG)

    # Check for rlibmap
    find_program(ROOT_LIBMAP NAMES rlibmap rootcling PATHS ${ROOTSYS}/bin NO_DEFAULT_PATH)
    if(ROOT_LIBMAP)
        message(STATUS "Found ${ROOT_LIBMAP}")
    else()
        message(FATAL_ERROR "Could not find rlibmap executable.")
    endif(ROOT_LIBMAP)
    mark_as_advanced(ROOT_LIBMAP)

    # Check for rootcint
    find_program(ROOT_CINT NAMES rootcint PATHS ${ROOTSYS}/bin NO_DEFAULT_PATH)
    if(ROOT_CINT)
        message(STATUS "Found ${ROOT_CINT}")
    else()
        message(FATAL_ERROR "Could not find rootcint executable.")
    endif(ROOT_CINT)
    mark_as_advanced(ROOT_CINT)

    # Checking ROOT version
    execute_process(COMMAND ${ROOT_CONFIG} --version OUTPUT_VARIABLE ROOT_VERSION ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
    if(error)
        message(FATAL_ERROR "Error retrieving ROOT version : ${error}")
    endif(error)
    string(STRIP "${ROOT_VERSION}" ROOT_VERSION)

    # Extract major, minor, and patch versions from
    string(REGEX REPLACE "^([0-9]+)\\.[0-9][0-9]+\\/[0-9][0-9]+.*" "\\1" ROOT_VERSION_MAJOR "${ROOT_VERSION}")
    string(REGEX REPLACE "^[0-9]+\\.([0-9][0-9])+\\/[0-9][0-9]+.*" "\\1" ROOT_VERSION_MINOR "${ROOT_VERSION}")
    string(REGEX REPLACE "^[0-9]+\\.[0-9][0-9]+\\/([0-9][0-9]+).*" "\\1" ROOT_VERSION_PATCH "${ROOT_VERSION}")
    message(STATUS "Found ROOT version ${ROOT_VERSION_MAJOR}.${ROOT_VERSION_MINOR}.${ROOT_VERSION_PATCH}")

    # Print ROOT features
    execute_process(COMMAND ${ROOT_CONFIG} --features OUTPUT_VARIABLE ROOT_FEATURES ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
    if(error)
        message(FATAL_ERROR "Error retrieving ROOT features : ${error}")
    else()
        message(STATUS "ROOT was built with the following features: ${ROOT_FEATURES}")
    endif(error)
    string(STRIP "${ROOT_FEATURES}" ROOT_FEATURES)

    # Checking for ROOT libdir
    execute_process(COMMAND ${ROOT_CONFIG} --libdir OUTPUT_VARIABLE ROOT_LIBDIR ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
    if(error)
        message(FATAL_ERROR "Error retrieving ROOT libdir: ${error}")
    endif(error)
    string(STRIP "${ROOT_LIBDIR}" ROOT_LIBDIR)

    # Checking for ROOT etcdir
    execute_process(COMMAND ${ROOT_CONFIG} --etcdir OUTPUT_VARIABLE ROOT_ETCDIR ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE)
    if(error)
        message(FATAL_ERROR "Error retrieving ROOT etcdir: ${error}")
    endif(error)
    string(STRIP "${ROOT_ETCDIR}" ROOT_ETCDIR)

    # Checking for ROOT libs
    execute_process(COMMAND ${ROOT_CONFIG} --noldflags --libs OUTPUT_VARIABLE ROOT_LIBS ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
    if(error)
        message(FATAL_ERROR "Error retrieving ROOT libdir: ${error}")
    endif(error)
    string(STRIP "${ROOT_LIBS}" ROOT_LIBS)

    foreach(lib ${ROOT_LIBS})
        string(REPLACE "-rdynamic" "" new_lib ${lib})
        string(REPLACE "-l" "" lib ${new_lib})
        set(ROOT_LIBRARIES ${ROOT_LIBRARIES} ${lib})
    endforeach()
    string(STRIP "${ROOT_LIBRARIES}" ROOT_LIBRARIES)
    separate_arguments(ROOT_LIBRARIES)

    # Checking for ROOT incdir
    execute_process(COMMAND ${ROOT_CONFIG} --incdir OUTPUT_VARIABLE ROOT_INCDIR ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
    if(error)
        message(FATAL_ERROR "Error retrieving ROOT incdir: ${error}")
    endif(error)
    string(STRIP "${ROOT_INCDIR}" ROOT_INCDIR)
    set(ROOT_INCLUDE_DIR ${ROOT_INCDIR})

    # Setting ROOT compiler flags (except the -I parts) to a variable
    execute_process(COMMAND ${ROOT_CONFIG} --auxcflags OUTPUT_VARIABLE _ROOT_CXX_FLAGS ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE)
    if(error)
        message(FATAL_ERROR "Error retrieving ROOT compiler flags: ${error}")
    endif(error)
    string(STRIP "${_ROOT_CXX_FLAGS}" ROOT_CXX_FLAGS)

    # Check if ROOT was built with libc++ (as opposed to stdlibc++)
    if(ROOT_CXX_FLAGS MATCHES "-stdlib=libc\\+\\+")
        set(ROOT_HAS_LIBCXX TRUE)
    else()
        set(ROOT_HAS_LIBCXX FALSE)
    endif()

    # Check if ROOT was built with C++11 support
    if(ROOT_CXX_FLAGS MATCHES "-std=c\\+\\+11")
        message(STATUS "ROOT was built with C++11 support")
        set(ROOT_HAS_CXX11 TRUE)
    else()
        set(ROOT_HAS_CXX11 FALSE)
    endif()

    # Checking for glibs
    execute_process(COMMAND ${ROOT_CONFIG} --noldflags --glibs OUTPUT_VARIABLE ROOT_GLIBS ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
    if(error)
        message(FATAL_ERROR "Error retrieving ROOT glibs: ${error}")
    endif(error)

    # Checking for glibs
    string(STRIP "${ROOT_GLIBS}" ROOT_GLIBS)

    foreach(lib ${ROOT_GLIBS})
        string(REPLACE "-rdynamic" "" new_lib "${lib}")
        string(REPLACE "-l" "" lib "${new_lib}")
        set(ROOT_GLIBRARIES ${ROOT_GLIBRARIES} ${lib})
    endforeach()
    string(STRIP "${ROOT_GLIBRARIES}" ROOT_GLIBRARIES)
    separate_arguments(ROOT_GLIBRARIES)

    # Checking for AliEn support
    # If AliEn support is enabled we need to point to AliEn
    execute_process(COMMAND ${ROOT_CONFIG} --has-alien OUTPUT_VARIABLE ROOT_HASALIEN ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
    if(error)
        message(FATAL_ERROR "Error checking if ROOT was built with AliEn support: ${error}")
    endif(error)
    
    #if defined
    if(ROOT_HASALIEN)
        string(STRIP "${ROOT_HASALIEN}" ROOT_HASALIEN)
        if(ROOT_HASALIEN STREQUAL "yes")
            if(ALIEN)
            add_definitions(-DWITHALIEN)

            # AliEn might bring some system libraries, we need to use them
            if(EXISTS "${ALIEN}/lib")
                link_directories(${ALIEN}/lib)
            endif()

            # api/lib should always exists
            if(EXISTS "${ALIEN}/api/lib")
                link_directories(${ALIEN}/api/lib)
            endif()

            # include for AliEn
            if(EXISTS "${ALIEN}/include")
                include_directories(SYSTEM ${ALIEN}/include)
            endif()

            # api/include always exists
            if(EXISTS "${ALIEN}/api/include")
                include_directories(SYSTEM ${ALIEN}/api/include)
            endif()

            set(ROOT_HASALIEN TRUE)
            else(ALIEN)
            message(FATAL_ERROR "ROOT was built with AliEn support but no AliEn installation found. Please set \"ALIEN\" to point to your AliEn installation.")
            endif(ALIEN)
        else()
            set(ROOT_HASALIEN FALSE)
        endif()
    endif(ROOT_HASALIEN)

    # Checking for xml support
    execute_process(COMMAND ${ROOT_CONFIG} --has-xml OUTPUT_VARIABLE ROOT_HASXML ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
    if(error)
        message(FATAL_ERROR "Error checking if ROOT was built with xml support: ${error}")
    endif(error)
    
    # if defined
    if(ROOT_HASXML)
        string(STRIP "${ROOT_HASXML}" ROOT_HASXML)
        if(ROOT_HASXML STREQUAL "yes")
            add_definitions(-DWITHXML)
            set(ROOT_HASXML TRUE)
        else()
            set(ROOT_HASXML FALSE)
        endif()
    endif(ROOT_HASXML)

    # Checking for OpenGL support
    execute_process(COMMAND ${ROOT_CONFIG} --has-opengl OUTPUT_VARIABLE ROOT_HASOPENGL ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
    if(error)
        message(FATAL_ERROR "Error checking if ROOT was built with OpenGL support: ${error}")
    endif(error)
    
    if(ROOT_HASOPENGL)
        string(STRIP "${ROOT_HASOPENGL}" ROOT_HASOPENGL)
        if(ROOT_HASOPENGL STREQUAL "yes")
            set(ROOT_HASOPENGL TRUE)
        else()
            set(ROOT_HASOPENGL FALSE)
        endif()
    endif()

    # Checking for fortran compiler
    execute_process(COMMAND ${ROOT_CONFIG} --f77 OUTPUT_VARIABLE ROOT_FORTRAN ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
    if(error)
        message(FATAL_ERROR "Error checking ROOT fortran compiler: ${error}")
    endif(error)
    string(STRIP "${ROOT_FORTRAN}" ROOT_FORTRAN)

    # adding the libraries and the inc dir
    link_directories(${ROOT_LIBDIR})
#    include_directories(SYSTEM ${ROOT_INCLUDE_DIR})
    set(ROOT_FOUND TRUE)

    # Workaround misssing XML, VMC, Minuit from ROOT static library
    # Also adding libzma.a libfreetype.a libpcre.a
    # To be removed where https://sft.its.cern.ch/jira/browse/ROOT-6904 issue is fixed
    if(ALIROOT_STATIC)
        message(WARNING "AliRoot static build enabled! libRootExtra.a will be created.\nPlease remove when ROOT https://sft.its.cern.ch/jira/browse/ROOT-6904 issue is fixed")

        # ROOT needs xml2 but it is not built with the static version so we have to add it
        find_package(LibXml2)

        if(LIBXML2_FOUND)
        
            # adding SSL
            find_package(OpenSSL)
        
            if(OPENSSL_FOUND)
                file(GLOB _extraroot "${ROOTSYS}/montercarlo/vmc/src/*.o" "${ROOTSYS}/tree/treeplayer/src/*.o" "${ROOTSYS}/io/xmlparser/src/*.o" "${ROOTSYS}/math/minuit2/src/*.o")
                add_library(RootExtra STATIC ${_extraroot})
                set_target_properties(RootExtra PROPERTIES COMPILE_FLAGS "${LIBXML2_INCLUDE_DIR} ${OPENSSL_INCLUDE_DIR}")
                set_target_properties(RootExtra PROPERTIES LINKER_LANGUAGE CXX)
                target_link_libraries(RootExtra ${ROOT_LIBDIR}/libfreetype.a ${ROOT_LIBDIR}/libpcre.a ${ROOT_LIBDIR}/liblzma.a ${LIBXML2_LIBRARIES} ${OPENSSL_LIBRARIES})
            else()
                message(FATAL_ERROR "OpenSSL not found. Coould not generate the static RootExtra. Please install Openssl")
            endif()
        else()
            message(FATAL_ERROR "libxml2 not found. Can not generate the static RootExtra. Please install libxml2")
        endif()
    endif(ALIROOT_STATIC)
else()
    message(FATAL_ERROR "ROOT installation not found! Please point to the ROOT installation using -DROOTSYS=ROOT_INSTALL_DIR.")
endif(ROOTSYS)
Commit	Line	Data
fffaf6a5	1	# **************************************************************************
	2	# * Copyright(c) 1998-2014, ALICE Experiment at CERN, All rights reserved. *
	3	# * *
	4	# * Author: The ALICE Off-line Project. *
	5	# * Contributors are mentioned in the code where appropriate. *
	6	# * *
	7	# * Permission to use, copy, modify and distribute this software and its *
	8	# * documentation strictly for non-commercial purposes is hereby granted *
	9	# * without fee, provided that the above copyright notice appears in all *
	10	# * copies and that both the copyright notice and this permission notice *
	11	# * appear in the supporting documentation. The authors make no claims *
	12	# * about the suitability of this software for any purpose. It is *
	13	# * provided "as is" without express or implied warranty. *
	14	# **************************************************************************
	15
	16	# Checking for a proper ROOT installation based on the ROOTSYS variable
	17	# received during configuration
	18	# If proper root installation it is setting the following variables
	19	# - ROOT_VERSION - ROOT version as reported by root-config
	20	# - ROOT_VERSION_MAJOR
	21	# - ROOT_VERSIOM_MINOR
	22	# - ROOT_VERSION_PATCH
	23	# - ROOT_CONFIG - path to root-config script
	24	# - ROOT_CINT - path to rootcint executable
0224bae4	25	# - ROOT_LIBMAP - path to rlibmap executable
fffaf6a5	26	# - ROOT_FEATURES - list of build features for ROOT
fffaf6a5	27	# - ROOT_LIBDIR - full path to ROOT library folder
209fc56a	28	# - ROOT_ETCDIR - full path to the ROOT's configuration directory
fffaf6a5	29	# - ROOT_LIBRARIES - libraries needed for the package to be used
a0f34e87	30	# - ROOT_GLIBRARIES - regular + GUI ROOT libraries + path to be used during linking
aff16a25	31	# - ROOT_INCLUDE_DIR - full path to ROOT include folder
20fa67b6	32	# - ROOT_CXX_FLAGS - flags used by the C++ compiler for building ROOT
	33	# - ROOT_HAS_LIBCXX - TRUE if ROOT was built against libc++ (as opposed to libstdc++)
	34	# - ROOT_HAS_CXX11 - TRUE if ROOT was built with C++11 support
fffaf6a5	35	# - ROOT_HASALIEN - ROOT was built with AliEn support
aac9c09b	36	# - ROOT_HASOPENGL - ROOT was built with OpenGL support
fffaf6a5	37	# - ROOT_HASXML - ROOT was built with XML support
1dbe1076	38	# - ROOT_FORTRAN - fortran compiler
fffaf6a5	39
36799128	40	set(ROOT_FOUND FALSE)
36799128	41
fffaf6a5	42	if(ROOTSYS)
	43	message(STATUS "Checking for a proper ROOT installation in ${ROOTSYS}.")
	44
aff16a25	45	# Setting defaults
fffaf6a5	46	set(ROOT_LIBDIR ${ROOTSYS}/lib)
aff16a25	47	set(ROOT_INCLUDE_DIR ${ROOTSYS}/include)
fffaf6a5	48
	49	# Check for root-config scripts
	50	find_program(ROOT_CONFIG NAMES root-config PATHS ${ROOTSYS}/bin NO_DEFAULT_PATH)
	51
36799128	52	if(NOT ROOT_CONFIG)
fffaf6a5	53	message(FATAL_ERROR "Could not find root-config script.")
36799128	54	endif(NOT ROOT_CONFIG)
9f4ff23c	55	mark_as_advanced(ROOT_CONFIG)
3c517eb8	56
0224bae4	57	# Check for rlibmap
8e186b29	58	find_program(ROOT_LIBMAP NAMES rlibmap rootcling PATHS ${ROOTSYS}/bin NO_DEFAULT_PATH)
0224bae4	59	if(ROOT_LIBMAP)
	60	message(STATUS "Found ${ROOT_LIBMAP}")
	61	else()
	62	message(FATAL_ERROR "Could not find rlibmap executable.")
	63	endif(ROOT_LIBMAP)
9f4ff23c	64	mark_as_advanced(ROOT_LIBMAP)
0224bae4	65
fffaf6a5	66	# Check for rootcint
	67	find_program(ROOT_CINT NAMES rootcint PATHS ${ROOTSYS}/bin NO_DEFAULT_PATH)
	68	if(ROOT_CINT)
	69	message(STATUS "Found ${ROOT_CINT}")
	70	else()
	71	message(FATAL_ERROR "Could not find rootcint executable.")
	72	endif(ROOT_CINT)
9f4ff23c	73	mark_as_advanced(ROOT_CINT)
fffaf6a5	74
	75	# Checking ROOT version
	76	execute_process(COMMAND ${ROOT_CONFIG} --version OUTPUT_VARIABLE ROOT_VERSION ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
	77	if(error)
	78	message(FATAL_ERROR "Error retrieving ROOT version : ${error}")
	79	endif(error)
6646d571	80	string(STRIP "${ROOT_VERSION}" ROOT_VERSION)
3c517eb8	81
fffaf6a5	82	# Extract major, minor, and patch versions from
	83	string(REGEX REPLACE "^([0-9]+)\\.[0-9][0-9]+\\/[0-9][0-9]+.*" "\\1" ROOT_VERSION_MAJOR "${ROOT_VERSION}")
	84	string(REGEX REPLACE "^[0-9]+\\.([0-9][0-9])+\\/[0-9][0-9]+.*" "\\1" ROOT_VERSION_MINOR "${ROOT_VERSION}")
	85	string(REGEX REPLACE "^[0-9]+\\.[0-9][0-9]+\\/([0-9][0-9]+).*" "\\1" ROOT_VERSION_PATCH "${ROOT_VERSION}")
	86	message(STATUS "Found ROOT version ${ROOT_VERSION_MAJOR}.${ROOT_VERSION_MINOR}.${ROOT_VERSION_PATCH}")
	87
	88	# Print ROOT features
	89	execute_process(COMMAND ${ROOT_CONFIG} --features OUTPUT_VARIABLE ROOT_FEATURES ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
	90	if(error)
	91	message(FATAL_ERROR "Error retrieving ROOT features : ${error}")
	92	else()
7345d84f	93	message(STATUS "ROOT was built with the following features: ${ROOT_FEATURES}")
fffaf6a5	94	endif(error)
6646d571	95	string(STRIP "${ROOT_FEATURES}" ROOT_FEATURES)
3c517eb8	96
fffaf6a5	97	# Checking for ROOT libdir
	98	execute_process(COMMAND ${ROOT_CONFIG} --libdir OUTPUT_VARIABLE ROOT_LIBDIR ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
	99	if(error)
	100	message(FATAL_ERROR "Error retrieving ROOT libdir: ${error}")
	101	endif(error)
6646d571	102	string(STRIP "${ROOT_LIBDIR}" ROOT_LIBDIR)
fffaf6a5	103
209fc56a	104	# Checking for ROOT etcdir
	105	execute_process(COMMAND ${ROOT_CONFIG} --etcdir OUTPUT_VARIABLE ROOT_ETCDIR ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE)
	106	if(error)
	107	message(FATAL_ERROR "Error retrieving ROOT etcdir: ${error}")
	108	endif(error)
	109	string(STRIP "${ROOT_ETCDIR}" ROOT_ETCDIR)
	110
0224bae4	111	# Checking for ROOT libs
a0f34e87	112	execute_process(COMMAND ${ROOT_CONFIG} --noldflags --libs OUTPUT_VARIABLE ROOT_LIBS ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
0224bae4	113	if(error)
	114	message(FATAL_ERROR "Error retrieving ROOT libdir: ${error}")
	115	endif(error)
6646d571	116	string(STRIP "${ROOT_LIBS}" ROOT_LIBS)
3c517eb8	117
a0f34e87	118	foreach(lib ${ROOT_LIBS})
	119	string(REPLACE "-rdynamic" "" new_lib ${lib})
	120	string(REPLACE "-l" "" lib ${new_lib})
	121	set(ROOT_LIBRARIES ${ROOT_LIBRARIES} ${lib})
	122	endforeach()
6646d571	123	string(STRIP "${ROOT_LIBRARIES}" ROOT_LIBRARIES)
a0f34e87	124	separate_arguments(ROOT_LIBRARIES)
3c517eb8	125
fffaf6a5	126	# Checking for ROOT incdir
	127	execute_process(COMMAND ${ROOT_CONFIG} --incdir OUTPUT_VARIABLE ROOT_INCDIR ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
	128	if(error)
	129	message(FATAL_ERROR "Error retrieving ROOT incdir: ${error}")
	130	endif(error)
6646d571	131	string(STRIP "${ROOT_INCDIR}" ROOT_INCDIR)
aff16a25	132	set(ROOT_INCLUDE_DIR ${ROOT_INCDIR})
3c517eb8	133
20fa67b6	134	# Setting ROOT compiler flags (except the -I parts) to a variable
	135	execute_process(COMMAND ${ROOT_CONFIG} --auxcflags OUTPUT_VARIABLE _ROOT_CXX_FLAGS ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE)
	136	if(error)
	137	message(FATAL_ERROR "Error retrieving ROOT compiler flags: ${error}")
	138	endif(error)
	139	string(STRIP "${_ROOT_CXX_FLAGS}" ROOT_CXX_FLAGS)
	140
	141	# Check if ROOT was built with libc++ (as opposed to stdlibc++)
	142	if(ROOT_CXX_FLAGS MATCHES "-stdlib=libc\\+\\+")
	143	set(ROOT_HAS_LIBCXX TRUE)
	144	else()
	145	set(ROOT_HAS_LIBCXX FALSE)
	146	endif()
	147
	148	# Check if ROOT was built with C++11 support
	149	if(ROOT_CXX_FLAGS MATCHES "-std=c\\+\\+11")
	150	message(STATUS "ROOT was built with C++11 support")
	151	set(ROOT_HAS_CXX11 TRUE)
	152	else()
	153	set(ROOT_HAS_CXX11 FALSE)
	154	endif()
	155
fffaf6a5	156	# Checking for glibs
a0f34e87	157	execute_process(COMMAND ${ROOT_CONFIG} --noldflags --glibs OUTPUT_VARIABLE ROOT_GLIBS ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
fffaf6a5	158	if(error)
	159	message(FATAL_ERROR "Error retrieving ROOT glibs: ${error}")
	160	endif(error)
	161
	162	# Checking for glibs
6646d571	163	string(STRIP "${ROOT_GLIBS}" ROOT_GLIBS)
a0f34e87	164
	165	foreach(lib ${ROOT_GLIBS})
	166	string(REPLACE "-rdynamic" "" new_lib "${lib}")
	167	string(REPLACE "-l" "" lib "${new_lib}")
	168	set(ROOT_GLIBRARIES ${ROOT_GLIBRARIES} ${lib})
	169	endforeach()
6646d571	170	string(STRIP "${ROOT_GLIBRARIES}" ROOT_GLIBRARIES)
a0f34e87	171	separate_arguments(ROOT_GLIBRARIES)
3c517eb8	172
a0f34e87	173	# Checking for AliEn support
dcf9b878	174	# If AliEn support is enabled we need to point to AliEn
fffaf6a5	175	execute_process(COMMAND ${ROOT_CONFIG} --has-alien OUTPUT_VARIABLE ROOT_HASALIEN ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
fffaf6a5	176	if(error)
7345d84f	177	message(FATAL_ERROR "Error checking if ROOT was built with AliEn support: ${error}")
fffaf6a5	178	endif(error)
b168bfa8	179
	180	#if defined
	181	if(ROOT_HASALIEN)
6646d571	182	string(STRIP "${ROOT_HASALIEN}" ROOT_HASALIEN)
b168bfa8	183	if(ROOT_HASALIEN STREQUAL "yes")
7345d84f	184	if(ALIEN)
	185	add_definitions(-DWITHALIEN)
	186
	187	# AliEn might bring some system libraries, we need to use them
	188	if(EXISTS "${ALIEN}/lib")
	189	link_directories(${ALIEN}/lib)
	190	endif()
	191
	192	# api/lib should always exists
	193	if(EXISTS "${ALIEN}/api/lib")
	194	link_directories(${ALIEN}/api/lib)
	195	endif()
	196
	197	# include for AliEn
	198	if(EXISTS "${ALIEN}/include")
	199	include_directories(SYSTEM ${ALIEN}/include)
	200	endif()
	201
	202	# api/include always exists
	203	if(EXISTS "${ALIEN}/api/include")
	204	include_directories(SYSTEM ${ALIEN}/api/include)
	205	endif()
	206
	207	set(ROOT_HASALIEN TRUE)
	208	else(ALIEN)
	209	message(FATAL_ERROR "ROOT was built with AliEn support but no AliEn installation found. Please set \"ALIEN\" to point to your AliEn installation.")
	210	endif(ALIEN)
4d31eb1c	211	else()
4d31eb1c	212	set(ROOT_HASALIEN FALSE)
b168bfa8	213	endif()
b168bfa8	214	endif(ROOT_HASALIEN)
3c517eb8	215
a0f34e87	216	# Checking for xml support
fffaf6a5	217	execute_process(COMMAND ${ROOT_CONFIG} --has-xml OUTPUT_VARIABLE ROOT_HASXML ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
fffaf6a5	218	if(error)
7345d84f	219	message(FATAL_ERROR "Error checking if ROOT was built with xml support: ${error}")
fffaf6a5	220	endif(error)
b168bfa8	221
	222	# if defined
	223	if(ROOT_HASXML)
6646d571	224	string(STRIP "${ROOT_HASXML}" ROOT_HASXML)
b168bfa8	225	if(ROOT_HASXML STREQUAL "yes")
b168bfa8	226	add_definitions(-DWITHXML)
4d31eb1c	227	set(ROOT_HASXML TRUE)
	228	else()
	229	set(ROOT_HASXML FALSE)
b168bfa8	230	endif()
b168bfa8	231	endif(ROOT_HASXML)
1dbe1076	232
aac9c09b	233	# Checking for OpenGL support
	234	execute_process(COMMAND ${ROOT_CONFIG} --has-opengl OUTPUT_VARIABLE ROOT_HASOPENGL ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
	235	if(error)
7345d84f	236	message(FATAL_ERROR "Error checking if ROOT was built with OpenGL support: ${error}")
aac9c09b	237	endif(error)
4d31eb1c	238
4d31eb1c	239	if(ROOT_HASOPENGL)
6646d571	240	string(STRIP "${ROOT_HASOPENGL}" ROOT_HASOPENGL)
4d31eb1c	241	if(ROOT_HASOPENGL STREQUAL "yes")
	242	set(ROOT_HASOPENGL TRUE)
	243	else()
	244	set(ROOT_HASOPENGL FALSE)
	245	endif()
	246	endif()
	247
aac9c09b	248	# Checking for fortran compiler
1dbe1076	249	execute_process(COMMAND ${ROOT_CONFIG} --f77 OUTPUT_VARIABLE ROOT_FORTRAN ERROR_VARIABLE error OUTPUT_STRIP_TRAILING_WHITESPACE )
	250	if(error)
	251	message(FATAL_ERROR "Error checking ROOT fortran compiler: ${error}")
	252	endif(error)
6646d571	253	string(STRIP "${ROOT_FORTRAN}" ROOT_FORTRAN)
3c517eb8	254
aff16a25	255	# adding the libraries and the inc dir
aff16a25	256	link_directories(${ROOT_LIBDIR})
f0315837	257	# include_directories(SYSTEM ${ROOT_INCLUDE_DIR})
fffaf6a5	258	set(ROOT_FOUND TRUE)
f82bfa66	259
	260	# Workaround misssing XML, VMC, Minuit from ROOT static library
	261	# Also adding libzma.a libfreetype.a libpcre.a
	262	# To be removed where https://sft.its.cern.ch/jira/browse/ROOT-6904 issue is fixed
	263	if(ALIROOT_STATIC)
	264	message(WARNING "AliRoot static build enabled! libRootExtra.a will be created.\nPlease remove when ROOT https://sft.its.cern.ch/jira/browse/ROOT-6904 issue is fixed")
	265
7345d84f	266	# ROOT needs xml2 but it is not built with the static version so we have to add it
f82bfa66	267	find_package(LibXml2)
	268
	269	if(LIBXML2_FOUND)
	270
	271	# adding SSL
	272	find_package(OpenSSL)
	273
	274	if(OPENSSL_FOUND)
	275	file(GLOB _extraroot "${ROOTSYS}/montercarlo/vmc/src/.o" "${ROOTSYS}/tree/treeplayer/src/.o" "${ROOTSYS}/io/xmlparser/src/.o" "${ROOTSYS}/math/minuit2/src/.o")
	276	add_library(RootExtra STATIC ${_extraroot})
	277	set_target_properties(RootExtra PROPERTIES COMPILE_FLAGS "${LIBXML2_INCLUDE_DIR} ${OPENSSL_INCLUDE_DIR}")
	278	set_target_properties(RootExtra PROPERTIES LINKER_LANGUAGE CXX)
	279	target_link_libraries(RootExtra ${ROOT_LIBDIR}/libfreetype.a ${ROOT_LIBDIR}/libpcre.a ${ROOT_LIBDIR}/liblzma.a ${LIBXML2_LIBRARIES} ${OPENSSL_LIBRARIES})
	280	else()
	281	message(FATAL_ERROR "OpenSSL not found. Coould not generate the static RootExtra. Please install Openssl")
	282	endif()
	283	else()
	284	message(FATAL_ERROR "libxml2 not found. Can not generate the static RootExtra. Please install libxml2")
	285	endif()
	286	endif(ALIROOT_STATIC)
6db31708	287	else()
fffaf6a5	288	message(FATAL_ERROR "ROOT installation not found! Please point to the ROOT installation using -DROOTSYS=ROOT_INSTALL_DIR.")
6646d571	289	endif(ROOTSYS)