# Copyright (c) 2021-2022 Barcelona Supercomputing Center (BSC)
# SPDX-License-Identifier: GPL-3.0-or-later

cmake_minimum_required(VERSION 3.20)

project(OVNI LANGUAGES C)

add_compile_options(-Wall -Wextra -Wformat
  -Wmissing-prototypes -Wstrict-prototypes
  #-Wconversion -Wsign-conversion
  -Wold-style-definition -pedantic
  -Werror
)

set(CMAKE_C_STANDARD 11)
set(CMAKE_C_EXTENSIONS FALSE)

option(ENABLE_DEBUG_LOG "Enable debug messages (very verbose)")

if(ENABLE_DEBUG_LOG)
  add_definitions(-DENABLE_DEBUG)
endif()

if(NOT CMAKE_BUILD_TYPE)
  set(CMAKE_BUILD_TYPE "Release" CACHE STRING
    "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel Asan UBsan." FORCE)
endif(NOT CMAKE_BUILD_TYPE)

include(CheckIPOSupported)
check_ipo_supported(RESULT ipo_available OUTPUT error LANGUAGES C)

# Enable IPO by default, if available
if(ipo_available)
  set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
else()
  message(WARNING "IPO is not supported, expect performance penalty")
endif()

# Extra build type for AddressSanitizer (Asan)
set(CMAKE_C_FLAGS_ASAN "${CMAKE_C_FLAGS_DEBUG} \
  -fsanitize=address \
  -fno-optimize-sibling-calls \
  -fsanitize-address-use-after-scope \
  -fno-omit-frame-pointer"
  CACHE STRING "Flags used by the C compiler during AddressSanitizer builds." FORCE)

set(CMAKE_C_FLAGS_UBSAN "${CMAKE_C_FLAGS_DEBUG} -fsanitize=undefined"
  CACHE STRING "Flags used by the C compiler during UndefinedBehaviorSanitizer builds." FORCE)

# Required for clock_gettime() in glibc <= 2.17
include(CheckLibraryExists)
check_library_exists(c clock_gettime "" HAVE_CLOCK_GETTIME)

if (NOT HAVE_CLOCK_GETTIME)
  check_library_exists(rt clock_gettime "time.h" HAVE_CLOCK_GETTIME_RT)
  if (HAVE_CLOCK_GETTIME_RT)
    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lrt")
    set(CMAKE_C_STANDARD_LIBRARIES "${CMAKE_C_STANDARD_LIBRARIES} -lrt")
  else()
    message(FATAL_ERROR "cannot find clock_gettime()")
  endif()
endif()

add_library(ovni SHARED
  ovni.c
  parson.c
)

target_include_directories(ovni PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})

add_executable(ovniemu
  chan.c
  emu.c
  emu_nosv.c
  emu_openmp.c
  emu_ovni.c
  emu_tampi.c
  emu_nodes.c
  emu_kernel.c
  emu_nanos6.c
  emu_task.c
  trace.c
  ovni.c
  parson.c
  pcf.c
  prv.c
)

add_executable(ovnidump
  dump.c
  ovni.c
  trace.c
  parson.c
)

add_executable(ovni2prv
  ovni2prv.c
  ovni.c
  trace.c
  parson.c
)

add_executable(ovnisort
  sort.c
  ovni.c
  trace.c
  parson.c
)

# Use <PackageName>_ROOT variables if available, commonly used by MPI
# installations
if(POLICY CMP0074)
  cmake_policy(SET CMP0074 NEW)
endif()

find_package(MPI REQUIRED)
add_executable(ovnisync ovnisync.c)
target_link_libraries(ovnisync m MPI::MPI_C)

if(CMAKE_PROJECT_NAME STREQUAL PROJECT_NAME)
  include(CTest)

  if(BUILD_TESTING)
    add_subdirectory(test)
  endif()
endif()

install(TARGETS ovni LIBRARY DESTINATION lib)
install(TARGETS ovniemu ovnidump ovni2prv ovnisync ovnisort RUNTIME DESTINATION bin)
install(FILES ovni.h DESTINATION include)
install(DIRECTORY cfg/ DESTINATION share/ovni)