llvm-project

3be2eaaf - [cmake] use target names instead of legacy variables (#185463)

[cmake] use target names instead of legacy variables (#185463) Use the [name of the imported targets](https://cmake.org/cmake/help/latest/module/CheckSymbolExists.html) when testing the libraries during cmake configuration. This removes the need to also set `CMAKE_REQUIRED_INCLUDES` and `CMAKE_REQUIRED_DEFINITIONS` and reflects more modern CMake usage where targets are preferred over variables. This is already the case when checking libcurl in the same file.