cmake_minimum_required( VERSION 2.8 )
project( ERT C CXX )

if(POLICY CMP0042)
  cmake_policy(SET CMP0042 OLD)
endif()

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

set( ERT_VERSION_MAJOR 2 )   # Remember to update release notes whenever
set( ERT_VERSION_MINOR 1 )   # you change the ERT_VERSION_MINOR or MAJOR
set( ERT_VERSION_MICRO git ) # with "new in Ert Version X.X.X"!

# If the micro version is not integer, that should be interpreted as a
# development version leading towards version MAJOR.MINOR.0

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

option( BUILD_ERT           "Build the full ERT application - Linux only"             OFF)
option( BUILD_TESTS         "Should the tests be built"                               OFF)
option( BUILD_APPLICATIONS  "Should we build small utility applications"              OFF)
option( BUILD_ECL_SUMMARY   "Build the commandline application ecl_summary"           OFF)
option( BUILD_PYTHON        "Run py_compile on the python wrappers"                   ON )
option( BUILD_SHARED_LIBS   "Build shared libraries"                                  ON )
option( INSTALL_ERT         "Should anything be installed when issuing make install?" ON )
option( ERT_BUILD_GUI       "Should the PyQt based GUI be compiled and installed"     OFF)
option( ERT_USE_OPENMP      "Use OpenMP"                                              OFF )
option( ERT_DOC             "Build ERT documantation"                                 OFF)
option( ERT_BUILD_CXX       "Build some CXX wrappers"                                 ON)





set(STATOIL_TESTDATA_ROOT "" CACHE PATH  "Root to Statoil internal testdata")
if (EXISTS ${STATOIL_TESTDATA_ROOT})
  set( LINK "${CMAKE_CURRENT_SOURCE_DIR}/test-data/Statoil" )
  if (EXISTS ${LINK})
    EXECUTE_PROCESS( COMMAND ${CMAKE_COMMAND} -E remove "${LINK}")
  endif()

  EXECUTE_PROCESS( COMMAND ${CMAKE_COMMAND} -E create_symlink "${STATOIL_TESTDATA_ROOT}" "${LINK}")
  message(STATUS "Linking testdata: ${LINK} -> ${STATOIL_TESTDATA_ROOT}")
endif()



include( CheckFunctionExists )
include( CheckTypeSize )
ENABLE_TESTING()

if (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
   message(STATUS "Found Linux")
   set(ERT_LINUX TRUE )
   add_definitions( -DERT_LINUX )
   set( ERT_BINARY_POSTFIX .${ERT_VERSION_MAJOR}.${ERT_VERSION_MINOR} )
elseif(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
   message(STATUS "Found Darwin")
   set(ERT_LINUX TRUE )
   set(ERT_MAC TRUE)
   add_definitions( -DERT_LINUX )
   set( ERT_BINARY_POSTFIX .${ERT_VERSION_MAJOR}.${ERT_VERSION_MINOR} )
elseif (${CMAKE_SYSTEM_NAME} MATCHES "Windows")
   message(STATUS "Found Windows")
   set(ERT_WINDOWS TRUE)
   add_definitions( -DERT_WINDOWS )
endif()

if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
   message(STATUS "Setting build type to 'RelWithDebInfo' as none was specified.")
   set(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING 
       "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel." FORCE)
   # Set the possible values of build type for cmake-gui
   set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release"
                "MinSizeRel" "RelWithDebInfo")
endif()

# Treat warnings as errors if not on Windows
if (NOT ERT_WINDOWS)
   set( CMAKE_C_FLAGS   "${CMAKE_C_FLAGS} -std=gnu99 -Wall -Wno-unknown-pragmas ")
   set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall " )
endif()

if (MSVC)
    add_definitions( "/W3 /D_CRT_SECURE_NO_WARNINGS /wd4996" )
endif()


if (ERT_USE_OPENMP)
  find_package(OpenMP)
  if (OPENMP_FOUND) 
     message(STATUS "Enabling OpenMP support")
     # The actual use of OpenMP is only in the libecl library - the compile flags is only applied there.
  else()
     set( ERT_USE_OPENMP OFF )
     message(STATUS "OpenMP package not found - OpenMP disabled")
  endif()
endif()

list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/Modules)
find_package(CXX11Features)



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

# Checking based on compiling. Some of the code generates warnings, so we just cut down to bare-bone compiler flags.

set( CMAKE_C_FLAGS_main ${CMAKE_C_FLAGS} )
set( CMAKE_CXX_FLAGS_main ${CMAKE_CXX_FLAGS} )

if (NOT ERT_WINDOWS)
  set( CMAKE_C_FLAGS_main "${CMAKE_C_FLAGS} -std=gnu99" )
endif()

set( ERT_EXTERNAL_UTIL_LIBS "" )
include(cmake/ert_build_check.cmake)
include(cmake/ert_api_check.cmake)
include(cmake/ert_lib_check.cmake)

set( CMAKE_C_FLAGS ${CMAKE_C_FLAGS_main} )
set( CMAKE_CXX_FLAGS ${CMAKE_CXX_FLAGS_main} )

include(cmake/Modules/UseMultiArch.cmake)
include(cmake/ert_link.cmake)

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

set(INSTALL_GROUP          ""     CACHE STRING "Group to install as - blank to install as current group")
set(LIBRARY_OUTPUT_PATH ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_INSTALL_LIBDIR})
set(EXECUTABLE_OUTPUT_PATH ${CMAKE_CURRENT_BINARY_DIR}/bin)


if (BUILD_SHARED_LIBS)
   set( LIBRARY_TYPE SHARED )
else()
   set( LIBRARY_TYPE STATIC )
   if (BUILD_ERT)
      message(FATAL_ERROR "The full ERT application must be built with shared libraries")
   endif()
   if (BUILD_PYTHON)
      message(FATAL_ERROR "The Python wrappers require shared libraries")
   endif()
endif()

if (MSVC)
   add_definitions( -D__func__="\\"????\\"")
endif()

if (ERT_LINUX)
   set( NEED_LIBM TRUE )
   set( LINK_STATIC FALSE )
   add_definitions( -DHAVE_PROC )
else()
   set( NEED_LIBM FALSE )
   set( LINK_STATIC TRUE )
endif()

include_directories( ${PROJECT_SOURCE_DIR}/libert_util/include )
include_directories( ${PROJECT_BINARY_DIR}/libert_util/include )
if (MSVC)
  include_directories( ${PROJECT_BINARY_DIR}/libert_util/include/ert/util )
endif()
add_subdirectory( libert_util )


include_directories( ${PROJECT_SOURCE_DIR}/libgeometry/include )
add_subdirectory( libgeometry )

include_directories( ${PROJECT_SOURCE_DIR}/libecl/include )
add_subdirectory( libecl )

if (ERT_BUILD_CXX)
   include_directories( ${PROJECT_SOURCE_DIR}/libert_utilxx/include )
   include_directories( ${PROJECT_SOURCE_DIR}/libeclxx/include )

   add_subdirectory( libert_utilxx )
   add_subdirectory( libeclxx )
endif()

include_directories( ${PROJECT_SOURCE_DIR}/libecl_well/include )
add_subdirectory( libecl_well )


#-----------------------------------------------------------------
if (BUILD_ERT)
#-----------------------------------------------------------------
   if (BUILD_TESTS)
      option( ERT_LSF_SUBMIT_TEST "Build and run tests of LSF submit" OFF)
   endif()
   add_subdirectory( bin )

   include(cmake/ert_module_name.cmake)

   include_directories( ${PROJECT_SOURCE_DIR}/libconfig/include )
   add_subdirectory( libconfig )

   include_directories( ${PROJECT_SOURCE_DIR}/libsched/include )
   add_subdirectory( libsched )

   include_directories( ${PROJECT_SOURCE_DIR}/librms/include )
   add_subdirectory( librms )

   include_directories( ${PROJECT_SOURCE_DIR}/libanalysis/include )
   add_subdirectory( libanalysis )

   include_directories( ${PROJECT_SOURCE_DIR}/libjob_queue/include )
   add_subdirectory( libjob_queue )

   include_directories( ${PROJECT_SOURCE_DIR}/libenkf/include )
   add_subdirectory( libenkf )

   install(DIRECTORY ${PROJECT_SOURCE_DIR}/share DESTINATION ${CMAKE_INSTALL_PREFIX})
endif()


if (BUILD_PYTHON)
   if (ERT_WINDOWS)
      message(STATUS "Python is not supported on Windows")
   else()
      include(cmake/python.cmake2)
      add_subdirectory( python )

      if(ERT_DOC)
         add_subdirectory( docs )
      endif()
   endif()
endif()