1CMP0095 2------- 3 4.. versionadded:: 3.16 5 6``RPATH`` entries are properly escaped in the intermediary CMake install script. 7 8In CMake 3.15 and earlier, ``RPATH`` entries set via 9:variable:`CMAKE_INSTALL_RPATH` or via :prop_tgt:`INSTALL_RPATH` have not been 10escaped before being inserted into the ``cmake_install.cmake`` script. Dynamic 11linkers on ELF-based systems (e.g. Linux and FreeBSD) allow certain keywords in 12``RPATH`` entries, such as ``${ORIGIN}`` (More details are available in the 13``ld.so`` man pages on those systems). The syntax of these keywords can match 14CMake's variable syntax. In order to not be substituted (usually to an empty 15string) already by the intermediary ``cmake_install.cmake`` script, the user had 16to double-escape such ``RPATH`` keywords, e.g. 17``set(CMAKE_INSTALL_RPATH "\\\${ORIGIN}/../lib")``. Since the intermediary 18``cmake_install.cmake`` script is an implementation detail of CMake, CMake 3.16 19and later will make sure ``RPATH`` entries are inserted literally by escaping 20any coincidental CMake syntax. 21 22The ``OLD`` behavior of this policy is to not escape ``RPATH`` entries in the 23intermediary ``cmake_install.cmake`` script. The ``NEW`` behavior is to properly 24escape coincidental CMake syntax in ``RPATH`` entries when generating the 25intermediary ``cmake_install.cmake`` script. 26 27This policy was introduced in CMake version 3.16. CMake version |release| warns 28when the policy is not set and detected usage of CMake-like syntax and uses 29``OLD`` behavior. Use the :command:`cmake_policy` command to set it to ``OLD`` 30or ``NEW`` explicitly. 31 32.. include:: DEPRECATED.txt 33