kamailio/cmake/BuildType.cmake

# Set a default build type if none was specified
set(default_build_type "Release")
if(EXISTS "${CMAKE_SOURCE_DIR}/.git")
  set(default_build_type "Debug")
endif()

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()