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# 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 'RelWithDebInfo' as none was specified.")
set(CMAKE_BUILD_TYPE
RelWithDebInfo
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 TRUE)
else()
message(SEND_ERROR "IPO is not supported: ${output}")
endif()
endif()
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