# -*- mode: cmake; tab-width: 2; indent-tabs-mode: t; truncate-lines: t; compile-command: "cmake -Wdev" -*-
# vim: set filetype=cmake autoindent tabstop=2 shiftwidth=2 noexpandtab softtabstop=2 nowrap:

###########################################################################
#                                                                         #
# Note: The bulk of the build system is located in the cmake/ directory.  #
#       This file only contains the specializations for this particular   #
#       project. Most likely you are interested in editing one of these   #
#       files instead:                                                    #
#                                                                         #
#       dune.module                              Name and version number  #
#       CMakeLists_files.cmake                   Path of source files     #
#       cmake/Modules/${project}-prereqs.cmake   Dependencies             #
#                                                                         #
###########################################################################

cmake_minimum_required (VERSION 2.8)

set( OPM_CMAKE_ROOT "" CACHE PATH "Root directory containing OPM related cmake modules")

include (OpmInit OPTIONAL RESULT_VARIABLE OPM_INIT)

if (OPM_INIT) 

   # We actually found the OpmInit module without using the OPM_CMAKE_ROOT variable.
   # The build needs the variable $OPM_MACROS_ROOT to be set, so here we infer it 
   # by backtracing from the location of the OpmInit module.
   get_filename_component( TMP1 ${OPM_INIT} PATH )
   get_filename_component( TMP2 ${TMP1} PATH )
   get_filename_component( OPM_MACROS_ROOT ${TMP2} PATH )

else()

   if (OPM_CMAKE_ROOT)
      list( APPEND CMAKE_MODULE_PATH "${OPM_CMAKE_ROOT}/cmake/Modules")
      include (OpmInit OPTIONAL RESULT_VARIABLE OPM_INIT)
      set( OPM_MACROS_ROOT ${OPM_CMAKE_ROOT} )
   endif()

   if (NOT OPM_INIT)
      message( "" )       
      message( " /-------------------------------------------------------------------------------\\")
      message( " |  Could not locate the opm build macros. The opm build macros                  |")
      message( " |  are in a separate repository - instructions to proceed:                      |")
      message( " |                                                                               |")
      message( " |    1. Clone the repository: git clone git@github.com:OPM/opm-cmake.git        |")
      message( " |                                                                               |")
      message( " |    2. Run cmake in the current project with -DOPM_CMAKE_ROOT=<path>/opm-cmake |")
      message( " |                                                                               |") 
      message( " \\-------------------------------------------------------------------------------/")
      message( "" )       
      message( FATAL_ERROR "Could not find OPM Macros")
   endif()

endif()

option( INCLUDE_NON_PUBLIC_TESTS  "Include the tests which need non-public data" OFF)

# not the same location as most of the other projects? this hook overrides
macro (dir_hook)
endmacro (dir_hook)

# project information is in dune.module. Read this file and set variables.
# we cannot generate dune.module since it is read by dunecontrol before
# the build starts, so it makes sense to keep the data there then.
include (OpmInit)

# list of prerequisites for this particular project; this is in a
# separate file (in cmake/Modules sub-directory) because it is shared
# with the find module
include ("${project}-prereqs")

# read the list of components from this file (in the project directory);
# it should set various lists with the names of the files to include
include (CMakeLists_files.cmake)

macro (config_hook)
	opm_need_version_of ("dune-common")
	opm_need_version_of ("dune-istl")
endmacro (config_hook)

macro (prereqs_hook)
endmacro (prereqs_hook)

macro (sources_hook)
	if(DUNE_CORNERPOINT_FOUND OR dune-cornerpoint_FOUND)
		list (APPEND examples_SOURCES
			${PROJECT_SOURCE_DIR}/examples/flow_cp.cpp
			)
	endif()
endmacro (sources_hook)

macro (fortran_hook)
endmacro (fortran_hook)

macro (files_hook)
endmacro (files_hook)

macro (tests_hook)
endmacro (tests_hook)

# all setup common to the OPM library modules is done here
include (OpmLibMain)

add_custom_target(check-commits
									COMMAND ${CMAKE_COMMAND}
													-DPROJECT_SOURCE_DIR=${PROJECT_SOURCE_DIR}
													-DCMAKE_BINARY_DIR=${CMAKE_BINARY_DIR}
													-P ${PROJECT_SOURCE_DIR}/cmake/Scripts/CheckCommits.cmake)

# download Eigen if user doesn't have the correct version
if (NOT EIGEN3_FOUND)
	message (STATUS "Downloading Eigen3")
	include (ExternalProject)
	externalProject_Add (Eigen3
		GIT_REPOSITORY git://github.com/OPM/eigen3
		UPDATE_COMMAND git checkout 9e788db99d73f3199ade74bfda8d9f73fdfbbe4c
		CMAKE_ARGS -DEIGEN_TEST_NO_OPENGL=1 -DEIGEN_BUILD_PKGCONFIG=0 -DCMAKE_INSTALL_PREFIX=${CMAKE_BINARY_DIR}/eigen3-installed
		)

	include_directories (${CMAKE_BINARY_DIR}/eigen3-installed/include/eigen3)
	add_dependencies (opmautodiff Eigen3)
endif (NOT EIGEN3_FOUND)