# *********************************
# ************ cmake **************
# *********************************
CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
CMAKE_POLICY(SET CMP0043 NEW)
CMAKE_POLICY(SET CMP0048 NEW)

# Enable debug symbols by default
# must be done before project() statement
IF (NOT CMAKE_BUILD_TYPE)
	SET(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build (Debug or Release)" FORCE)
ENDIF()
# (you can also set it on the command line: -D CMAKE_BUILD_TYPE=Release)

# Enable CLANG as default compilers, to change this use
# cmake -DCMAKE_C_COMPILER=cc -DCMAKE_CXX_COMPILER=c++
# Note that if compilers are switched on the fly,
# the cache is deleted

IF (NOT DEFINED CMAKE_C_COMPILER)
	SET(CMAKE_C_COMPILER   "clang")#   CACHE STRING "Choose the compiler (c++, g++, clang++)" FORCE)
ENDIF()
#
IF (NOT DEFINED CMAKE_CXX_COMPILER)
	SET(CMAKE_CXX_COMPILER "clang++")# CACHE STRING "Choose the compiler (c++, g++, clang++)" FORCE)
ENDIF()

#SET(CMAKE_VERBOSE_MAKEFILE ON)

# To check for an include file you do this:
#CHECK_INCLUDE_FILE("stdint.h"        HAVE_STDINT_H)
# To check the size of a primitive type:
#CHECK_TYPE_SIZE("int"   SIZEOF_INT)



# *********************************
# ************ Project ************
# *********************************

STRING(TIMESTAMP VERSION %y.%U.%w.%H UTC)

MESSAGE(STATUS "Mars V${VERSION}")

PROJECT(mars VERSION ${VERSION})

INCLUDE(GNUInstallDirs)

# ======== For config.h.in =========
SET(PACKAGE_MAINTAINER "Thomas Bretz")
SET(PACKAGE_BUGREPORT  "tbretz@physik.rwth-aachen.de")
SET(PACKAGE_URL        "https://www.fact-project.org")



# *********************************
# ********* Requirements **********
# *********************************

# =========== help2man ============
FIND_PROGRAM(HELP2MAN_EXECUTABLE help2man)

# =========== pkg-config ============
FIND_PACKAGE(PkgConfig)
FIND_PACKAGE(PackageHandleStandardArgs)


# ============= libnova ==============

PKG_CHECK_MODULES(Nova Nova)

# Try to locate the package in the default path
# and in the path provided by pkg-config
FIND_PATH(NOVA_INCLUDE_DIR NAMES libnova/libnova.h PATHS ${NOVA_INCLUDE_DIRS})
FIND_LIBRARY(NOVA_LIBRARY NAMES nova PATHS ${NOVA_LIBRARY_DIRS})

# Check if NOVA_LIBARARY and NOVA_INCLUDE_DIR is set
# Print a message otherwise
FIND_PACKAGE_HANDLE_STANDARD_ARGS(Nova DEFAULT_MSG NOVA_LIBRARY NOVA_INCLUDE_DIR)

# Mark those variables to be displayed as 'advanced' in the GUI
MARK_AS_ADVANCED(NOVA_LIBRARY NOVA_INCLUDE_DIR)

# handle success
IF(NOVA_FOUND AND NOT NOVA_FIND_QUIETLY)
    MESSAGE(STATUS "Found Nova ${NOVA_LIBRARY} in ${NOVA_INCLUDE_DIR}")
ENDIF()


# ============== libz ================

FIND_PACKAGE(ZLIB REQUIRED)


# =========== Enable C++11 ===========

SET(CMAKE_CXX_STANDARD 11)
SET(CMAKE_CXX_FLAGS
	"${CMAKE_CXX_FLAGS} -Wall -Winit-self -Wpointer-arith \
         -Wcast-align -Wformat -Woverloaded-virtual \
         -Wnon-virtual-dtor -Wshadow -fPIC") # -Wextra

SET(CMAKE_CXX_FLAGS
	"${CMAKE_CXX_FLAGS} \
         -DMARSVER=\\\"1.0\\\" -D_REENTRANT -D__MARS__ -D__LINUX__ \
         -DPACKAGE_VERSION=\\\"1.0\\\" -DREVISION=\\\"1.0\\\" \
         -DPACKAGE_NAME=\\\"MARS\\\" -DHAVE_ZLIB")


# --------- config.h -------------

#CONFIGURE_FILE("${PROJECT_SOURCE_DIR}/config.h.in" "${PROJECT_BINARY_DIR}/config.h")
#INCLUDE_DIRECTORIES("${PROJECT_BINARY_DIR}")

SET(CMAKE_MODULE_PATH $ENV{ROOTSYS}/etc/cmake ${CMAKE_MODULE_PATH})


# You need to tell CMake where to find the ROOT installation. This can be done in a number of ways:
#   - ROOT built with classic configure/make use the provided $ROOTSYS/etc/cmake/FindROOT.cmake
#   - ROOT built with CMake. Add in CMAKE_PREFIX_PATH the installation prefix for ROOT
#LIST(APPEND CMAKE_PREFIX_PATH $ENV{ROOTSYS})

#---Locate the ROOT package and defines a number of variables (e.g. ROOT_INCLUDE_DIRS)

# -lGui -lCore -lCint -lRIO -lNet -lHist -lGraf -lGraf3d -lGpad -lTree
# -lRint -lPostscript -lMatrix -lPhysics -lMathCore -lThread
# -lASImage -lMinuit -lHistPainter -lThread

FIND_PACKAGE(ROOT REQUIRED COMPONENTS Gui Minuit)


#MESSAGE("INCL_DIRS: ${ROOT_INCLUDE_DIRS}")
#MESSAGE("LIBS:      ${ROOT_LIBRARIES}")
#MESSAGE("DEFS:      ${ROOT_DEFINITIONS}")
#MESSAGE("CXXFLAGS:  ${ROOT_CXX_FLAGS}")
#MESSAGE("CXFLAGS:   ${ROOT_CC_FLAGS}")
#MESSAGE("FOUND:     ${ROOT_FOUND}")
#MESSAGE("FILE:      ${ROOT_USE_FILE}")
#MESSAGE("DIR:       ${CMAKE_CURRENT_SOURCE_DIR}")
#ROOT_<library>_LIBRARY	PATH	Full path for each of the ROOT libraries listed in COMPONENTS
#ROOT_<command>_CMD	PATH	Full path for each ROOT executable (rootcling, root, hadd, etc.)
#ROOT_<option>_FOUND	BOOL	True for each enabled build option (e.g. cocoa, python, xrootd, etc.)

#---Define useful ROOT functions and macros (e.g. ROOT_GENERATE_DICTIONARY)
#INCLUDE(${ROOT_USE_FILE})

# function ROOT_GENERATE_DICTIONARY( dictionary
#                                    header1 header2 ...
#                                    LINKDEF linkdef1 ...
#                                    OPTIONS opt1...)

# -------------------------------------------------------

FILE(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/dictionary)

MACRO(SRCFILES subdir)

 	EXECUTE_PROCESS(COMMAND
		${PROJECT_SOURCE_DIR}/Makefile.extract.sh ${subdir}
	        WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/${subdir}
		OUTPUT_VARIABLE _HEADERS)

        SEPARATE_ARGUMENTS(_HEADERS)

        LIST(GET       _HEADERS 0 _CINT)
        LIST(REMOVE_AT _HEADERS 0)

 	SET(_SRCLIST ${_HEADERS})

        STRING(REPLACE "${subdir}/" " "    _HEADERS ${_HEADERS}) # Remove directory
        STRING(REPLACE ".cc"        ".h"   _HEADERS ${_HEADERS}) # change extension
        STRING(REPLACE ".cxx"       ".hxx" _HEADERS ${_HEADERS}) # special for files in mmc

	SEPARATE_ARGUMENTS(_HEADERS)

        ROOT_GENERATE_DICTIONARY(dictionary/${_CINT} ${_HEADERS} ${_CINT}Incl.h LINKDEF ${_CINT}LinkDef.h OPTIONS -p)
	TARGET_SOURCES(mars PRIVATE dictionary/${_CINT}.cxx ${_SRCLIST})

ENDMACRO()

# -------------------------------------------------------

#SET(DIRECTORIES mmc)

SET(DIRECTORIES
	manalysis
        mastro
        mbadpixels
	mbase
        mcalib
        mcamera
	mcorsika
        mdata
        mdrs
        melectronics
        mextralgo
        mfbase
	mfileio
        mfilter
        mgeom
        mgui
        mhbase
        mhcalib
        mhflux
        mhft
        mhist
        mhvstime
        mimage
        mjobs
        mjoptim
        mjtrain
        mmain
        mmc
        mmovie
        mmuon
        mpedestal
        mpointing
        mranforest
        mraw
        mreport
        msignal
        msim
        msimcamera
        msimreflector
        msql
        mtools
        mtrigger
)

INCLUDE_DIRECTORIES(${ROOT_INCLUDE_DIRS} ${DIRECTORIES} mcore .)

ROOT_GENERATE_DICTIONARY(dictionary/MARS
	   factofits.h
	   factfits.h
	   DrsCalib.h
	   PixelMap.h
	   Interpolator2D.h
	   nova.h
	   Prediction.h
           MIncl.h
        LINKDEF MLinkDef.h
        OPTIONS -p -D__MARS__ -DHAVE_ZLIB)

ADD_LIBRARY(mars SHARED dictionary/MARS.cxx) # CMAKE_POSITION_INDEPENDENT_CODE
TARGET_LINK_LIBRARIES(mars
        ZLIB::ZLIB
        ${NOVA_LIBRARY}
        ${ROOT_LIBRARIES})


FOREACH(DIR ${DIRECTORIES})
	MESSAGE(STATUS "Reading source list from ${DIR}/Makefile")
	SRCFILES(${DIR})
ENDFOREACH()

ADD_CUSTOM_COMMAND(TARGET mars POST_BUILD
	COMMAND ln -sf ${PROJECT_BINARY_DIR}/libmars.so ${PROJECT_SOURCE_DIR}/
        COMMENT "Creating symlink for libmars.so to ${PROJECT_BINARY_DIR}")

#---Create a shared library with geneated dictionary
#ADD_LIBRARY(Event SHARED Event.cxx G__Event.cxx)
#TARGET_LINK_LIBRARIES(Event ${ROOT_LIBRARIES})

#---Create  a main program using the library
#ADD_EXECUTABLE(Main MainEvent.cxx)
#TARGET_LINK_LIBRARIES(Main Event)