CMP0098ΒΆ
New in version 3.17.
FindFLEX
runs flex
in directory
CMAKE_CURRENT_BINARY_DIR
when executing.
The module provides a FLEX_TARGET
macro which generates FLEX output.
In CMake 3.16 and below the macro would generate a custom command that runs
flex
in the current source directory. CMake 3.17 and later prefer to
run it in the build directory and use CMAKE_CURRENT_BINARY_DIR
as the WORKING_DIRECTORY
of its add_custom_command()
invocation.
This ensures that any implicitly generated file is written relative to the
build tree rather than the source tree, unless the generated file is
provided as absolute path.
This policy provides compatibility for projects that have not been updated to expect the new behavior.
The OLD
behavior for this policy is for FLEX_TARGET
to use
the current source directory for the WORKING_DIRECTORY
and where
to generate implicit files. The NEW
behavior of this policy is to
use the current binary directory for the WORKING_DIRECTORY
relative to
which implicit files are generated unless provided as absolute path.
This policy was introduced in CMake version 3.17.
It may be set by cmake_policy()
or cmake_minimum_required()
.
If it is not set, CMake does not warn, and uses OLD
behavior.
Note
The OLD
behavior of a policy is
deprecated by definition
and may be removed in a future version of CMake.