cmake COMPILER_RT_HAS_LIBDL examples

Lewuathe/mlir-hello thirdparty/llvm-project/compiler-rt/cmake/config-ix.cmake :190 

check_library_exists(dl dlopen "" COMPILER_RT_HAS_LIBDL)

trailofbits/polytracker polytracker/src/compiler-rt/cmake/config-ix.cmake :130 

check_library_exists(dl dlopen "" COMPILER_RT_HAS_LIBDL)

CTSRD-CHERI/cheribsd contrib/subrepo-cheri-compiler-rt/cmake/config-ix.cmake :167 

check_library_exists(dl dlopen "" COMPILER_RT_HAS_LIBDL)