cmake HAVE_LTO examples

glKarin/com.n0n3m4.diii4a Q3E/src/main/jni/xash3d/hlsdk-portable/CMakeLists.txt :187 

check_ipo_supported(RESULT HAVE_LTO OUTPUT LTO_ERROR)

vengi-voxel/vengi CMakeLists.txt :86 

check_ipo_supported(RESULT HAVE_LTO OUTPUT error)

netdata/netdata packaging/cmake/Modules/NetdataCompilerFlags.cmake :123 

check_ipo_supported(RESULT HAVE_LTO)