#
# This file is distributed under the MIT License. See LICENSE for details.
#

cmake_minimum_required(VERSION 3.4.3)
project(smack)

if(NOT WIN32 OR MSYS OR CYGWIN)

  file(STRINGS "bin/versions" LLVM_VERSION_STR
    REGEX "LLVM_FULL_VERSION=\"[0-9]+\.[0-9]+\.[0-9]+")
  string(REGEX MATCH "[0-9]+\.[0-9]+" LLVM_EXTENDED_VERSION "${LLVM_VERSION_STR}")

  file(STRINGS "bin/versions" LLVM_VERSION_STR
    REGEX "LLVM_SHORT_VERSION=\"[0-9]+")
  string(REGEX MATCH "[0-9]+" LLVM_SHORT_VERSION "${LLVM_VERSION_STR}")

  find_program(LLVM_CONFIG_EXECUTABLE NAMES llvm-config-${LLVM_SHORT_VERSION}
    llvm-config PATHS ${LLVM_CONFIG} DOC "llvm-config")

  if(LLVM_CONFIG_EXECUTABLE STREQUAL "LLVM_CONFIG_EXECUTABLE-NOTFOUND")
    message(FATAL_ERROR "llvm-config could not be found!")
  endif()

  execute_process(
    COMMAND ${LLVM_CONFIG_EXECUTABLE} --cxxflags
    OUTPUT_VARIABLE LLVM_CXXFLAGS
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )

  # SMACK doesn't catch or throw exceptions, so -fno-exceptions is justified.
  # SMACK doesn't use C++ runtime type identification features, so -fno-rtti
  # is justified.
  # Shaobo: enable O3 so SMACK can save some time.
  set(CMAKE_CXX_FLAGS
    "${LLVM_CXXFLAGS} -fno-exceptions -fno-rtti -O3")

  execute_process(
    COMMAND ${LLVM_CONFIG_EXECUTABLE} --libs
    OUTPUT_VARIABLE LLVM_LIBS
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )

  execute_process(
    COMMAND ${LLVM_CONFIG_EXECUTABLE} --system-libs
    OUTPUT_VARIABLE LLVM_SYSTEM_LIBS
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )

  execute_process(
    COMMAND ${LLVM_CONFIG_EXECUTABLE} --ldflags
    OUTPUT_VARIABLE LLVM_LDFLAGS
    OUTPUT_STRIP_TRAILING_WHITESPACE
  )

else()
  set(LLVM_SRC "" CACHE PATH "LLVM source directory")
  set(LLVM_BUILD "" CACHE PATH "LLVM build directory")
  set(LLVM_BUILD_TYPE "" CACHE STRING "LLVM build type")

  if(NOT EXISTS "${LLVM_SRC}/include/llvm")
    message(FATAL_ERROR "Invalid LLVM source directory: ${LLVM_SRC}")
  endif()

  set(LLVM_LIBDIR "${LLVM_BUILD}/lib/${LLVM_BUILD_TYPE}")
  if(NOT EXISTS "${LLVM_LIBDIR}")
    message(FATAL_ERROR "Invalid LLVM build directory: ${LLVM_BUILD}")
  endif()

  ## TODO how to enable debug mode on Windows?
  # set(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O0")
  # set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O0")

  set(CMAKE_CXX_FLAGS "\"/I${LLVM_SRC}/include\" \"/I${LLVM_BUILD}/include\" -D_SCL_SECURE_NO_WARNINGS -wd4146 -wd4244 -wd4355 -wd4482 -wd4800")

  set(LLVM_LDFLAGS "")
  set(LLVM_LIBS "${LLVM_LIBDIR}/LLVMTransformUtils.lib"
    "${LLVM_LIBDIR}/LLVMipa.lib" "${LLVM_LIBDIR}/LLVMAnalysis.lib"
    "${LLVM_LIBDIR}/LLVMTarget.lib" "${LLVM_LIBDIR}/LLVMMC.lib"
    "${LLVM_LIBDIR}/LLVMObject.lib" "${LLVM_LIBDIR}/LLVMBitReader.lib"
    "${LLVM_LIBDIR}/LLVMCore.lib" "${LLVM_LIBDIR}/LLVMSupport.lib")

endif()

include_directories(include)
include_directories(sea-dsa/include)

add_library(utils STATIC
  include/utils/Devirt.h
  include/utils/MergeGEP.h
  include/utils/SimplifyInsertValue.h
  include/utils/SimplifyExtractValue.h
  lib/utils/Devirt.cpp
  lib/utils/MergeGEP.cpp
  lib/utils/SimplifyInsertValue.cpp
  lib/utils/SimplifyExtractValue.cpp
)

add_library(smackTranslator STATIC
  include/smack/AddTiming.h
  include/smack/BoogieAst.h
  include/smack/BplFilePrinter.h
  include/smack/BplPrinter.h
  include/smack/DSAWrapper.h
  include/smack/InitializePasses.h
  include/smack/Naming.h
  include/smack/Regions.h
  include/smack/SmackInstGenerator.h
  include/smack/SmackModuleGenerator.h
  include/smack/SmackOptions.h
  include/smack/CodifyStaticInits.h
  include/smack/RemoveDeadDefs.h
  include/smack/ExtractContracts.h
  include/smack/VerifierCodeMetadata.h
  include/smack/SimplifyLibCalls.h
  include/smack/SmackRep.h
  include/smack/VectorOperations.h
  include/smack/MemorySafetyChecker.h
  include/smack/IntegerOverflowChecker.h
  include/smack/RewriteBitwiseOps.h
  include/smack/NormalizeLoops.h
  include/smack/RustFixes.h
  include/smack/AnnotateLoopExits.h
  include/smack/SplitAggregateValue.h
  include/smack/Prelude.h
  include/smack/SmackWarnings.h
  lib/smack/AddTiming.cpp
  lib/smack/BoogieAst.cpp
  lib/smack/BplFilePrinter.cpp
  lib/smack/BplPrinter.cpp
  lib/smack/Debug.cpp
  lib/smack/DSAWrapper.cpp
  lib/smack/Naming.cpp
  lib/smack/Regions.cpp
  lib/smack/SmackInstGenerator.cpp
  lib/smack/SmackModuleGenerator.cpp
  lib/smack/SmackOptions.cpp
  lib/smack/CodifyStaticInits.cpp
  lib/smack/RemoveDeadDefs.cpp
  lib/smack/ExtractContracts.cpp
  lib/smack/VerifierCodeMetadata.cpp
  lib/smack/SimplifyLibCalls.cpp
  lib/smack/SmackRep.cpp
  lib/smack/VectorOperations.cpp
  lib/smack/MemorySafetyChecker.cpp
  lib/smack/IntegerOverflowChecker.cpp
  lib/smack/RewriteBitwiseOps.cpp
  lib/smack/NormalizeLoops.cpp
  lib/smack/RustFixes.cpp
  lib/smack/AnnotateLoopExits.cpp
  lib/smack/SplitAggregateValue.cpp
  lib/smack/Prelude.cpp
  lib/smack/SmackWarnings.cpp
)

add_executable(llvm2bpl
  tools/llvm2bpl/llvm2bpl.cpp
)

add_library(externalizePass STATIC
  tools/externalizer/ExternalizePass.h
  tools/externalizer/ExternalizePass.cpp
)

add_executable(extern-statics
  tools/externalizer/extern-statics.cpp
)

# We need to include Boost header files at least for macOS
find_package(Boost 1.55)
if(Boost_FOUND)
  include_directories(${Boost_INCLUDE_DIRS})
endif()
# We have to import LLVM's cmake definitions to build sea-dsa
# Borrowed from sea-dsa's CMakeLists.txt
# Borrowed from https://github.com/banach-space/llvm-tutor/commit/72cb20d058b9b3f51717c7a17607f7a4c7398642
find_package (LLVM ${LLVM_EXTENDED_VERSION} REQUIRED CONFIG)
if (NOT ${LLVM_SHORT_VERSION} VERSION_EQUAL "${LLVM_VERSION_MAJOR}")
  message(FATAL_ERROR "Found LLVM ${LLVM_VERSION_MAJOR}, but need ${LLVM_SHORT_VERSION}")
endif ()
list(APPEND CMAKE_MODULE_PATH "${LLVM_CMAKE_DIR}")
include(AddLLVM)
include(HandleLLVMOptions)
# We need the release build of sea-dsa otherwise we'll see a lot of crashes in
# sv-comp benchmarks.
# The following solution is from: https://stackoverflow.com/questions/30985215/passing-variables-down-to-subdirectory-only
set(SMACK_BUILD_TYPE "${CMAKE_BUILD_TYPE}")
set(CMAKE_BUILD_TYPE "Release")
add_subdirectory(sea-dsa/lib/seadsa)
set(CMAKE_BUILD_TYPE ${SMACK_BUILD_TYPE})

target_link_libraries(smackTranslator ${LLVM_LIBS} ${LLVM_SYSTEM_LIBS}
  ${LLVM_LDFLAGS})
target_link_libraries(llvm2bpl smackTranslator utils SeaDsaAnalysis)

target_link_libraries(externalizePass ${LLVM_LIBS} ${LLVM_SYSTEM_LIBS}
  ${LLVM_LDFLAGS})
target_link_libraries(extern-statics externalizePass)

install(TARGETS llvm2bpl
  RUNTIME DESTINATION bin
)

install(TARGETS extern-statics
  RUNTIME DESTINATION bin
)

install(FILES
  ${CMAKE_CURRENT_SOURCE_DIR}/bin/smack
  ${CMAKE_CURRENT_SOURCE_DIR}/bin/smack-doctor
  ${CMAKE_CURRENT_SOURCE_DIR}/bin/smack-svcomp-wrapper.sh
  PERMISSIONS OWNER_EXECUTE OWNER_WRITE OWNER_READ
  GROUP_EXECUTE GROUP_READ WORLD_EXECUTE WORLD_READ
  DESTINATION bin
)

install(DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/share/smack
  DESTINATION share
  USE_SOURCE_PERMISSIONS
  FILES_MATCHING PATTERN "*.py" PATTERN "*.h" PATTERN "*.c" PATTERN "Makefile"
    PATTERN "*.rs" PATTERN "*.f90" PATTERN "*.di" PATTERN "*.toml"
    PATTERN "*.cpp" PATTERN "cassert"
)

install(FILES
  ${CMAKE_CURRENT_SOURCE_DIR}/bin/versions
  DESTINATION share/smack
  RENAME versions.py
)

install(FILES
  ${CMAKE_CURRENT_SOURCE_DIR}/share/smack/lib/smack/Cargo.toml
  ${CMAKE_CURRENT_SOURCE_DIR}/share/smack/lib/smack/build.rs
  DESTINATION share/smack/lib
)

install(FILES
  ${CMAKE_CURRENT_SOURCE_DIR}/share/smack/lib/smack-rust.c
  DESTINATION share/smack/lib/src
)

install(FILES
  ${CMAKE_CURRENT_SOURCE_DIR}/share/smack/lib/smack.rs
  DESTINATION share/smack/lib/src
  RENAME lib.rs
)