# Minimum CMake version.
cmake_minimum_required (VERSION 2.8.5)

project(TPL)

# Adjust CMake's module path.
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} 
  ${TPL_SOURCE_DIR}/cmake)

# set up directory structure
set(TPL_MPI_DIR ${MPI_DIR})
set(TPL_CMAKE_BUILD_DIR    "${TPL_SOURCE_DIR}/include")
set(TPL_CMAKE_TEMPLATE_DIR "${TPL_SOURCE_DIR}/templates")

# This gets around a bug in the Intel compiler when limits.h is included.
set(CMAKE_C_FLAGS "-D_GCC_LIMITS_H_") 

# ############################################################################ #
# Build options
# ############################################################################ #

message(STATUS "Setting build type")
set(TPL_BUILD_TYPE_DFLT "Release")
if ( NOT TPL_BUILD_TYPE ) 
  set(TPL_BUILD_TYPE ${TPL_BUILD_TYPE_DFLT})
endif()
message(STATUS "Setting build type -- ${TPL_BUILD_TYPE}")

# Download directory TPL_DOWNLOAD_DIR
set(TPL_DOWNLOAD_DIR_DFLT ${TPL_BINARY_DIR}/Downloads)
if(NOT TPL_DOWNLOAD_DIR)
  set(TPL_DOWNLOAD_DIR ${TPL_DOWNLOAD_DIR_DFLT})
endif()
message(STATUS "Download TPL files in ${TPL_DOWNLOAD_DIR}") 

# TPL install location
set(TPL_INSTALL_PREFIX_DFLT "${TPL_BINARY_DIR}/external-projects")
if ( NOT TPL_INSTALL_PREFIX )
  set(TPL_INSTALL_PREFIX ${TPL_INSTALL_PREFIX_DFLT})
endif()
message(STATUS "Install TPLs in ${TPL_INSTALL_PREFIX}")

# start TPLs install
include(${TPL_SOURCE_DIR}/TPLVersions.cmake)
include(ExternalProject)
include(DefineExternalProjectArgs)

if (${APPLE})
  message(STATUS "  machine identified as an APPLE")
  set(TPL_MATH_LIB "-framework veclib" PARENT_SCOPE)
  set(TPL_MATH_LIB "-framework veclib")
endif ()

IF (USE_X11)
   IF(UNIX)
     FIND_PACKAGE(X11)
     #FIND_LIBRARY(XXF86VM_LIBRARY Xxf86vm)
     message(STATUS "FIND_PACKAGE(X11)  X11_LIBRARIES= ${X11_LIBRARIES}")
     SET(X11_LIBRARIES
         ${X11_LIBRARIES}
         #${XXF86VM_LIBRARY}
         )
   ENDIF(UNIX)
ENDIF(USE_X11)

# Determine what tpls to build.
if (USE_PETSC)
if(PETSC_COMPILED)
else()
  include("${TPL_CMAKE_BUILD_DIR}/Build_PETSC.cmake")
  append_set(TOUGHLIB_TPL_CMAKE_ARGS
  -DPETSC_DIR:FILEPATH=${TPL_INSTALL_PREFIX})
endif()
else ()
  # Find BLAS. We build it if we don't see it.
  # Find LAPACK. We build it if we don't see it.
endif ()

# PARMETIS
#if (NOT USE_PETSC)
   if (USE_MPI) 
#      include("${TPL_CMAKE_BUILD_DIR}/Build_PARMETIS.cmake")
#      append_set(TOUGHLIB_TPL_CMAKE_ARGS 
#                 -DPARMETIS_DIR:FILEPATH=${TPL_INSTALL_PREFIX})
      #METIS       
      include("${TPL_CMAKE_BUILD_DIR}/Build_METIS.cmake")
      append_set(TOUGHLIB_TPL_CMAKE_ARGS 
                 -DMETIS_DIR:FILEPATH=${TPL_INSTALL_PREFIX})
    endif() 
#endif ()

#AZTEC
if (USE_MPI)
  include("${TPL_CMAKE_BUILD_DIR}/Build_AZTEC.cmake")
  append_set(TOUGHLIB_TPL_CMAKE_ARGS 
    -DAZTEC_DIR:FILEPATH=${TPL_INSTALL_PREFIX})
endif ()

# --- Create a CMake cache scipt
set(TPL_CONFIG_FILE tpl-config.cmake)
configure_file(${TPL_CMAKE_TEMPLATE_DIR}/${TPL_CONFIG_FILE}.in
               ${PROJECT_BINARY_DIR}/${TPL_CONFIG_FILE}
               @ONLY)
install( FILES "${PROJECT_BINARY_DIR}/${TPL_CONFIG_FILE}"
         DESTINATION ${TPL_INSTALL_PREFIX})