# Copyright 2021 PickNik Inc
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#    * Redistributions of source code must retain the above copyright
#      notice, this list of conditions and the following disclaimer.
#
#    * Redistributions in binary form must reproduce the above copyright
#      notice, this list of conditions and the following disclaimer in the
#      documentation and/or other materials provided with the distribution.
#
#    * Neither the name of the PickNik Inc nor the names of its
#      contributors may be used to endorse or promote products derived from
#      this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.


# Set a default build type if none was specified
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
  message(STATUS "Setting build type to 'Debug' as none was specified.")
  set(CMAKE_BUILD_TYPE
      Debug
      CACHE STRING "Choose the type of build." FORCE)
  # Set the possible values of build type for cmake-gui, ccmake
  set_property(
    CACHE CMAKE_BUILD_TYPE
    PROPERTY STRINGS
      "Debug"
      "Release"
      "MinSizeRel"
      "RelWithDebInfo")
endif()

# Generate compile_commands.json to make it easier to work with clang based tools
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

option(ENABLE_IPO "Enable Interprocedural Optimization, aka Link Time Optimization (LTO)" OFF)

if(ENABLE_IPO)
  include(CheckIPOSupported)
  check_ipo_supported(
    RESULT
    result
    OUTPUT
    output)
  if(result)
    set(CMAKE_INTERPROCEDURAL_OPTIMIZATION ON)
  else()
    message(SEND_ERROR "IPO is not supported: ${output}")
  endif()
endif()
if(CMAKE_CXX_COMPILER_ID MATCHES ".*Clang")
  add_compile_options(-fcolor-diagnostics)
elseif(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
  add_compile_options(-fdiagnostics-color=always)
else()
  message(STATUS "No colored compiler diagnostic set for '${CMAKE_CXX_COMPILER_ID}' compiler.")
endif()
