#===------------------------------------------------------------------------===#
#
#                     The KLEE Symbolic Virtual Machine
#
# This file is distributed under the University of Illinois Open Source
# License. See LICENSE.TXT for details.
#
#===------------------------------------------------------------------------===#

find_package(metaSMT CONFIG)
if (NOT metaSMT_FOUND)
  message(FATAL_ERROR "metaSMT not found. Try setting `-DmetaSMT_DIR=/path` where"
    " `/path` is the directory containing `metaSMTConfig.cmake`")
endif()
message(STATUS "metaSMT_DIR: ${metaSMT_DIR}")
list(APPEND KLEE_COMPONENT_EXTRA_INCLUDE_DIRS
  "${metaSMT_INCLUDE_DIR}" ${metaSMT_INCLUDE_DIRS})
# FIXME: We should test linking
list(APPEND KLEE_SOLVER_LIBRARIES ${metaSMT_LIBRARIES})

# Separate flags and defines from ${metaSMT_CXXFLAGS}
string_to_list("${metaSMT_CXXFLAGS}" _metaSMT_CXXFLAGS_list)
set(_metasmt_flags "")
set(_metasmt_defines "")
foreach (flag ${_metaSMT_CXXFLAGS_list})
  if ("${flag}" MATCHES "^-D")
    # This is a define
    list(APPEND _metasmt_defines "${flag}")
  else()
    # Regular flag
    list(APPEND _metasmt_flags "${flag}")
  endif()
endforeach()

message(STATUS "metaSMT defines: ${_metasmt_defines}")
list(APPEND KLEE_COMPONENT_CXX_DEFINES ${_metasmt_defines})

message(STATUS "metaSMT flags: ${_metasmt_flags}")
foreach (f ${_metasmt_flags})
  # Test the flag and fail if it can't be used
  klee_component_add_cxx_flag(${f} REQUIRED)
endforeach()

set(available_metasmt_backends "BTOR" "STP" "Z3")
set(METASMT_DEFAULT_BACKEND "STP"
  CACHE
  STRING
  "Default metaSMT backend. Availabe options ${available_metasmt_backends}")
# Provide drop down menu options in cmake-gui
set_property(CACHE METASMT_DEFAULT_BACKEND
  PROPERTY STRINGS ${available_metasmt_backends})

# Check METASMT_DEFAULT_BACKEND has a valid value.
list(FIND available_metasmt_backends "${METASMT_DEFAULT_BACKEND}" _meta_smt_backend_index)
if ("${_meta_smt_backend_index}" EQUAL "-1")
  message(FATAL_ERROR
    "Invalid metaSMT default backend (\"${METASMT_DEFAULT_BACKEND}\").\n"
    "Valid values are ${available_metasmt_backends}")
endif()

# Set appropriate define
list(APPEND KLEE_COMPONENT_CXX_DEFINES
  -DMETASMT_DEFAULT_BACKEND_IS_${METASMT_DEFAULT_BACKEND})