CMakeLists.txt

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# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.

cmake_minimum_required(VERSION 3.12.0)
project(Characterization
        LANGUAGES CXX)

include(GNUInstallDirs)
include(CMakeDependentOption)

### Require out-of-source builds
file(TO_CMAKE_PATH "${PROJECT_BINARY_DIR}/CMakeLists.txt" LOC_PATH)
if(EXISTS "${LOC_PATH}")
    message(FATAL_ERROR "You cannot build in a source directory (or any directory with a CMakeLists.txt file). Please make a build subdirectory. Feel free to remove CMakeCache.txt and CMakeFiles.")
endif()

# Ensure builds on Windows export all symbols
set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)

#set(CMAKE_VERBOSE_MAKEFILE ON)
set(CMAKE_MACOSX_RPATH ON)

set(CMAKE_CXX_STANDARD 11)

# enable compiler warnings globally
# derived from https://foonathan.net/blog/2018/10/17/cmake-warnings.html
# and https://arne-mertz.de/2018/07/cmake-properties-options/
if (MSVC)
  add_compile_options(/W4)
  set(CMAKE_DEBUG_POSTFIX "d")
else()
  add_compile_options(-Wall -pedantic -W -Wextra)
endif()

if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU" AND NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS "9.0")
  add_compile_options(-Wimplicit-fallthrough=3)
endif()

# Code generation options, to ensure shaerd libraries work and are portable
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
set(CMAKE_C_EXTENSIONS OFF)
set(CMAKE_CXX_EXTENSIONS OFF)

###### OPTIONS ######
option(SANITIZE "Run sanitization checks (g++/clang only)" OFF)
if(SANITIZE AND CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang")
  add_compile_options(-fsanitize=${SANITIZE})
  add_link_options(-fsanitize=${SANITIZE})
endif()


# set default build type to Release
# Derived from: https://blog.kitware.com/cmake-and-the-default-build-type/
set(default_build_type "Release")
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
  message(STATUS "Setting build type to '${default_build_type}' as none was specified.")
  set(CMAKE_BUILD_TYPE "${default_build_type}" CACHE
      STRING "Choose the type of build." FORCE)
  # Set the possible values of build type for cmake-gui
  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
    "Debug" "Release" "MinSizeRel" "RelWithDebInfo")
endif()

###### TARGETS ######
# do we need the next line since we don't actually make a library anymore?

add_subdirectory(cpp)