####################################################
#                                                  #
#           SpecMiCP : CMakeLists.txt              #
#                                                  #
####################################################

project(specmicp)
cmake_minimum_required(VERSION 2.8.8)

# Configuration options
# ======================

# For an explanation of the options see the INSTALL file
option( SPECMICP_USE_OPENMP "Thread parallelisation of specmicp instances if available" ON )
option( SPECMICP_NO_DEBUG "Disable SpecMiCP assert" OFF )
option( SPECMICP_BUILD_STATIC "Build static libraries" OFF )
option( SPECMICP_BUILD_EXAMPLE "Build the examples" ON )
option( SPECMICP_DEBUG_EQUATION_FD_JACOBIAN "Use a finite difference jacobian is specmicp" OFF )
option( SPECMICP_BINARIES_USE_STATIC "SpecMiCP binaries use static libraries" OFF)

# PGO sequence
option( SPECMICP_PROFILE_GENERATE "Generate the profile for PGO optimization" OFF )
option( SPECMICP_PROFILE_USE "Use the generated profile for PGO optimization" OFF )

# LTO optimization
option( SPECMICP_LTO "Use link time optimization" OFF )
option( SPECMICP_LD_GOLD "Use GNU gold linker" ON )

option( SPECMICP_BENCHMARK "Build benchmark" OFF )

# global variables
# ================

set(SPECMICP_VERSION 0.0.3)

# External Package
# ================

set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${PROJECT_SOURCE_DIR}/cmake)

# OpenMP
#-------
# not required but recommended
if(SPECMICP_USE_OPENMP)
    find_package(OpenMP)
endif()

# Boost
# -----
find_package(Boost REQUIRED)
include_directories(${Boost_INCLUDE_DIR})

# Eigen
# -----
find_package(Eigen3 REQUIRED)  # This module comes from the Eigen3 Package
include_directories(${EIGEN3_INCLUDE_DIR})
# Eigen unsuported
# GMRES.h is really the file we are using/looking for
# If it doesn't exist then the solver will not be included in the list of the parse solvers
if(EXISTS "${EIGEN3_INCLUDE_DIR}/unsupported/Eigen/src/IterativeSolvers/GMRES.h")
    add_definitions(-DEIGEN_UNSUPPORTED_FOUND)
    include_directories("${EIGEN3_INCLUDE_DIR}/unsupported/")
endif()

# Yaml-cpp
# --------

include(FindPkgConfig)
pkg_check_modules(YAML REQUIRED yaml-cpp>=0.5)
include_directories(${YAML_INCLUDE_DIRS})
link_directories(${YAML_LIBRARY_DIRS})

# HDF5
# ----

find_package(HDF5 REQUIRED COMPONENTS C CXX)
# HDF5 is optional, must be checked by files that used it

# sanitizer
include(SanitizerBuild)

# compilation flags
# =================

# check the availability of :
# c++11
include(cxx11)
# -fuse-ld=gold
include(gold_linker)
# pgo optimization
include(pg_optimization)
# -fvisibility-hidden
include(visibility_flag)

# just a friendly warning
if(NOT UNIX)
    message(WARNING "not tested !")
endif()

include(lto)

# set the flag
SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${CXX11_FLAG}")
if (OPENMP_FOUND)
    SET( CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
    SET( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
endif()
SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -Wall -pedantic")

##SET(CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG")
message(STATUS "c++ flags : ${CMAKE_CXX_FLAGS}")


#                        Directories
#########################################################################

# 3rd party
# =========

# installation dir
# ----------------
# http://www.cmake.org/pipermail/cmake/2010-February/035466.html
# compute default library install dir
# library
# ------
set (_DEFAULT_LIBRARY_INSTALL_DIR lib)
if (EXISTS "${CMAKE_INSTALL_PREFIX}/lib32/" AND CMAKE_SIZEOF_VOID_P EQUAL 4)
 set (_DEFAULT_LIBRARY_INSTALL_DIR lib32)
elif (EXISTS "${CMAKE_INSTALL_PREFIX}/lib64/" AND CMAKE_SIZEOF_VOID_P EQUAL 8)
 set (_DEFAULT_LIBRARY_INSTALL_DIR lib64)
endif ()
# the library install dir
set(LIBRARY_INSTALL_DIR "${_DEFAULT_LIBRARY_INSTALL_DIR}" CACHE PATH "Installation directory for libraries")
set(STATIC_LIBRARY_INSTALL_DIR "${_DEFAULT_LIBRARY_INSTALL_DIR}/static" CACHE PATH "Installation directory for static libraries")
# make the library install dir an absolute path (can be important e.g. when using CONFIGURE_FILE to embed
# the library installation directory into a file)
if(NOT IS_ABSOLUTE "${LIBRARY_INSTALL_DIR}")
  set(LIBRARY_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/${LIBRARY_INSTALL_DIR}")
endif()
if(NOT IS_ABSOLUTE "${STATIC_LIBRARY_INSTALL_DIR}")
  set(STATIC_LIBRARY_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/${STATIC_LIBRARY_INSTALL_DIR}")
endif()
# Binaries
# --------
set(BIN_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for the programs")
# include
#--------
set(INCLUDE_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/include/specmicp" CACHE PATH "Installation directory for the headers")
# share
#------
set(SHARE_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/share/specmicp" CACHE PATH "Installation directory for the miscalleneous files...")

enable_testing(true)

#                   CPP API : SpecMiCP / ReactMiCP
#########################################################################

# the main source directory - the c++ api
set(SPECMICP_CPP_API ${CMAKE_CURRENT_SOURCE_DIR}/src)
include_directories(${SPECMICP_CPP_API})
add_subdirectory( ${SPECMICP_CPP_API} )


set(SPECMICP_LIBS specmicp specmicp_database specmicp_common ${YAML_LIBRARIES})
set(REACTMICP_LIBS reactmicp dfpm ${SPECMICP_LIBS} )
set(SPECMICP_STATIC_LIBS specmicp_static specmicp_database_static specmicp_common_static ${YAML_LIBRARIES})
set(REACTMICP_STATIC_LIBS reactmicp_static dfpm_static ${SPECMICP_STATIC_LIBS})

#                   Binaries
#########################################################################

add_subdirectory(src/bin/specmicp)


#                        Database
#########################################################################

add_subdirectory( data )

#                       Documentation
#########################################################################

# "common" documentation
# -----------------------
set(
    DOCS_LIST
    ${CMAKE_CURRENT_SOURCE_DIR}/README.md
    ${CMAKE_CURRENT_SOURCE_DIR}/INSTALL
    ${CMAKE_CURRENT_SOURCE_DIR}/COPYING
)

add_custom_target(docs SOURCES ${DOCS_LIST})
install(FILES ${DOCS_LIST}
    DESTINATION ${SHARE_INSTALL_DIR}
)

# scripts
# --------

add_subdirectory( scripts )

# Doxygen documentation
# ---------------------
add_subdirectory( doc )

#                          Tests
#########################################################################
add_subdirectory( tests )

#                        Examples
#########################################################################
add_subdirectory( examples )

#                       Benchmark
########################################################################
if (SPECMICP_BENCHMARK)
    add_subdirectory( benchmark )
endif()

#                       Docker
########################################################################

file(COPY 
    docker/Dockerfile
    docker/run_tests.sh
    DESTINATION ${CMAKE_CURRENT_BINARY_DIR}/docker
    )