CMP0095ΒΆ
New in version 3.16.
RPATH entries are properly escaped in the intermediary CMake install script.
In CMake 3.15 and earlier, RPATH entries set via
CMAKE_INSTALL_RPATH or via INSTALL_RPATH have not been
escaped before being inserted into the cmake_install.cmake script. Dynamic
linkers on ELF-based systems (e.g. Linux and FreeBSD) allow certain keywords in
RPATH entries, such as ${ORIGIN} (More details are available in the
ld.so man pages on those systems). The syntax of these keywords can match
CMake's variable syntax. In order to not be substituted (usually to an empty
string) already by the intermediary cmake_install.cmake script, the user had
to double-escape such RPATH keywords, e.g.
set(CMAKE_INSTALL_RPATH "\\\${ORIGIN}/../lib"). Since the intermediary
cmake_install.cmake script is an implementation detail of CMake, CMake 3.16
and later will make sure RPATH entries are inserted literally by escaping
any coincidental CMake syntax.
The OLD behavior of this policy is to not escape RPATH entries in the
intermediary cmake_install.cmake script. The NEW behavior is to properly
escape coincidental CMake syntax in RPATH entries when generating the
intermediary cmake_install.cmake script.
This policy was introduced in CMake version 3.16. CMake version 3.20.6 warns
when the policy is not set and detected usage of CMake-like syntax and uses
OLD behavior. Use the cmake_policy() command to set it to OLD
or NEW explicitly.
Note
The OLD behavior of a policy is
deprecated by definition
and may be removed in a future version of CMake.