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cmake_minimum_required(VERSION 3.8)
project(CheckIPOSupported-Fortran LANGUAGES Fortran)
cmake_policy(SET CMP0069 NEW)
if(CMAKE_Fortran_COMPILER_ID STREQUAL "LFortran")
add_compile_options(--implicit-interface)
endif()
include(CheckIPOSupported)
check_ipo_supported(RESULT ipo_supported OUTPUT ipo_output)
if(ipo_supported)
set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
elseif(CMake_TEST_IPO_WORKS_Fortran)
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.f)
add_executable(CheckIPOSupported-Fortran main.f)
target_link_libraries(CheckIPOSupported-Fortran PUBLIC foo)
enable_testing()
add_test(NAME CheckIPOSupported-Fortran COMMAND CheckIPOSupported-Fortran)
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