| cmake_minimum_required(VERSION 3.8) |
| project(CheckIPOSupported-CXX LANGUAGES CXX) |
| |
| cmake_policy(SET CMP0069 NEW) |
| |
| include(CheckIPOSupported) |
| check_ipo_supported(RESULT ipo_supported OUTPUT ipo_output) |
| if(ipo_supported) |
| set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE) |
| elseif(CMake_TEST_IPO_WORKS_CXX) |
| string(REPLACE "\n" "\n " ipo_output "${ipo_output}") |
| message(FATAL_ERROR "IPO expected to work, but the check failed:\n ${ipo_output}") |
| endif() |
| |
| add_library(foo foo.cpp) |
| add_executable(CheckIPOSupported-CXX main.cpp) |
| target_link_libraries(CheckIPOSupported-CXX PUBLIC foo) |
| |
| enable_testing() |
| add_test(NAME CheckIPOSupported-CXX COMMAND CheckIPOSupported-CXX) |
