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cmake_minimum_required(VERSION 3.8)
project(CheckIPOSupported-C LANGUAGES C)
cmake_policy(SET CMP0069 NEW)
include(CheckIPOSupported)
check_ipo_supported(RESULT ipo_supported)
if(ipo_supported)
set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
elseif(CMake_TEST_IPO_WORKS_C)
message(FATAL_ERROR "IPO expected to work")
endif()
add_library(foo foo.c)
add_executable(CheckIPOSupported-C main.c)
target_link_libraries(CheckIPOSupported-C PUBLIC foo)
enable_testing()
add_test(NAME CheckIPOSupported-C COMMAND CheckIPOSupported-C)
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