| project(${RunCMake_TEST} LANGUAGES C) |
| check_ipo_supported(RESULT result OUTPUT output) |
| |
| string(COMPARE EQUAL "${result}" "" is_empty) |
| if(is_empty) |
| message(FATAL_ERROR "Result variable is empty") |
| endif() |
| |
| string(COMPARE EQUAL "${result}" "YES" is_yes) |
| string(COMPARE EQUAL "${result}" "NO" is_no) |
| |
| if(is_yes) |
| # Compiler supports IPO |
| elseif(is_no) |
| # Compiler doesn't support IPO, output should not be empty. |
| string(COMPARE EQUAL "${output}" "" is_empty) |
| if(is_empty) |
| message(FATAL_ERROR "Output is empty") |
| endif() |
| else() |
| message(FATAL_ERROR "Unexpected result: ${result}") |
| endif() |
