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

set(KLEE_TOOLS_DIR "${CMAKE_BINARY_DIR}/bin")
set(LLVM_TOOLS_DIR "${LLVM_TOOLS_BINARY_DIR}")
# FIXME: Do this to avoid changing the template file that
# is shared by both build systems.
set(LLVMCC "${LLVMCC} -I${CMAKE_SOURCE_DIR}/include")
set(LLVMCXX "${LLVMCXX} -I${CMAKE_SOURCE_DIR}/include")
set(NATIVE_CC "${CMAKE_C_COMPILER} ${CMAKE_C_FLAGS} -I ${CMAKE_SOURCE_DIR}/include")
set(NATIVE_CXX "${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS} -I ${CMAKE_SOURCE_DIR}/include")
set(TARGET_TRIPLE "${TARGET_TRIPLE}")
if (ENABLE_KLEE_UCLIBC)
  set(ENABLE_UCLIBC 1)
else()
  set(ENABLE_UCLIBC 0)
endif()

# FIXME: Do this to avoid changing the template file that
# is shared by both build systems.
if (ENABLE_POSIX_RUNTIME)
  if (ENABLE_KLEE_UCLIBC)
    set(ENABLE_POSIX_RUNTIME 1)
  else()
    message(AUTHOR_WARNING
      "Disabling POSIX runtime tests because they depend on klee-uclibc"
      "\nFIXME!")
  set(ENABLE_POSIX_RUNTIME 0)
  endif()
else()
  set(ENABLE_POSIX_RUNTIME 0)
endif()

###############################################################################
# Find LLVM testing tools
###############################################################################
option(DOWNLOAD_LLVM_TESTING_TOOLS "Always download LLVM testing tools sources" OFF)
mark_as_advanced(DOWNLOAD_LLVM_TESTING_TOOLS)

# Check `FileCheck` and the `not` tools are available.  By default we'll try
# looking in the LLVM binary directory.  If that fails download the sources.
# This might be necessary if using a shipped version of LLVM because LLVM
# unfortunately does not ship its testing tools.
set(DOWNLOAD_FILECHECK_SOURCE FALSE)
set(DOWNLOAD_NOT_SOURCE FALSE)

if (DOWNLOAD_LLVM_TESTING_TOOLS)
  set(DOWNLOAD_FILECHECK_SOURCE TRUE)
  set(DOWNLOAD_NOT_SOURCE TRUE)
endif()

if (NOT EXISTS "${LLVM_TOOLS_BINARY_DIR}/FileCheck")
  message(WARNING "\"${LLVM_TOOLS_BINARY_DIR}/FileCheck\" does not exist. Downloading sources.")
  set(DOWNLOAD_FILECHECK_SOURCE TRUE)
endif()

if (NOT EXISTS "${LLVM_TOOLS_BINARY_DIR}/not")
  message(WARNING "\"${LLVM_TOOLS_BINARY_DIR}/not\" does not exist. Downloading sources.")
  set(DOWNLOAD_NOT_SOURCE TRUE)
endif()

if (DOWNLOAD_FILECHECK_SOURCE)
  set(FILECHECK_SRC_URL "https://raw.githubusercontent.com/llvm-mirror/llvm/release_${LLVM_VERSION_MAJOR}${LLVM_VERSION_MINOR}/utils/FileCheck/FileCheck.cpp")
  set(FILECHECK_SRC_FILE "${CMAKE_CURRENT_BINARY_DIR}/FileCheck.cpp")
  if (NOT EXISTS "${FILECHECK_SRC_URL}")
    message(STATUS "Downloading LLVM FileCheck source")
    file(DOWNLOAD "${FILECHECK_SRC_URL}" "${FILECHECK_SRC_FILE}" SHOW_PROGRESS)
  endif()
  add_executable(FileCheck
    ${FILECHECK_SRC_FILE}
  )
  klee_get_llvm_libs(FILECHECK_NEEDED_LIBS Support)
  target_include_directories(FileCheck PRIVATE ${KLEE_COMPONENT_EXTRA_INCLUDE_DIRS})
  target_compile_options(FileCheck PRIVATE ${KLEE_COMPONENT_CXX_FLAGS})
  target_compile_definitions(FileCheck PRIVATE ${KLEE_COMPONENT_CXX_DEFINES})
  target_link_libraries(FileCheck PRIVATE ${FILECHECK_NEEDED_LIBS})
endif()

if (DOWNLOAD_NOT_SOURCE)
  set(NOT_SRC_URL "https://raw.githubusercontent.com/llvm-mirror/llvm/release_${LLVM_VERSION_MAJOR}${LLVM_VERSION_MINOR}/utils/not/not.cpp")
  set(NOT_SRC_FILE "${CMAKE_CURRENT_BINARY_DIR}/not.cpp")
  if (NOT EXISTS "${NOT_SRC_FILE}")
    message(STATUS "Downloading LLVM not source")
    file(DOWNLOAD "${NOT_SRC_URL}" "${NOT_SRC_FILE}" SHOW_PROGRESS)
  endif()
  add_executable("not"
    ${NOT_SRC_FILE}
  )
  klee_get_llvm_libs(NOT_NEEDED_LIBS Support)
  target_include_directories("not" PRIVATE ${KLEE_COMPONENT_EXTRA_INCLUDE_DIRS})
  target_compile_options("not" PRIVATE ${KLEE_COMPONENT_CXX_FLAGS})
  target_compile_definitions("not" PRIVATE ${KLEE_COMPONENT_CXX_DEFINES})
  target_link_libraries("not" PRIVATE ${FILECHECK_NEEDED_LIBS})
endif()

###############################################################################
# Concrete tests build system
###############################################################################
add_subdirectory(Concrete)

###############################################################################
# Configure lit test suite
###############################################################################

# Find path to libkleeRuntest target for `lit.site.cfg`.
# FIXME: This is not the right way to get the location of the target we have to
# set CMP0026 to old.
# This will likely break if using a multi-configuration generator.
if (POLICY CMP0026)
  # HACK: Allow reading `LOCATION` property.
  cmake_policy(SET CMP0026 OLD)
endif()
get_property(LIB_KLEE_RUN_TEST_PATH
  TARGET kleeRuntest
  PROPERTY LOCATION
)

configure_file(lit.site.cfg.in
  ${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg
  @ONLY
)

add_custom_target(systemtests
  COMMAND "${LIT_TOOL}" ${LIT_ARGS} "${CMAKE_CURRENT_BINARY_DIR}"
  DEPENDS klee kleaver kleeRuntest
  COMMENT "Running system tests"
  ${ADD_CUSTOM_COMMAND_USES_TERMINAL_ARG}
)

# Tell CMake to remove lit's output directories when
# running `make clean`.
file(GLOB_RECURSE
  test_contents
  LIST_DIRECTORIES true
  RELATIVE "${CMAKE_CURRENT_SOURCE_DIR}"
  "*"
)
set(dirs_to_clean "")
foreach (f ${test_contents})
  if (IS_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/${f}")
    list(APPEND dirs_to_clean "${CMAKE_CURRENT_BINARY_DIR}/${f}/Output")
  endif()
endforeach()
set_property(
  DIRECTORY
  APPEND
  PROPERTY ADDITIONAL_MAKE_CLEAN_FILES
  ${dirs_to_clean}
)