New in version 3.7.
Honor per-config flags in
try_compile() source-file signature.
The source file signature of the
try_compile() command uses the value
CMAKE_<LANG>_FLAGS variable in the test project so that the
test compilation works as it would in the main project. However, CMake 3.6 and
below do not also honor config-specific compiler flags such as those in the
CMAKE_<LANG>_FLAGS_DEBUG variable. CMake 3.7 and above prefer to
honor config-specific compiler flags too. This policy provides compatibility
for projects that do not expect config-specific compiler flags to be used.
OLD behavior of this policy is to ignore config-specific flag
CMAKE_<LANG>_FLAGS_DEBUG and only use CMake's
built-in defaults for the current compiler and platform.
NEW behavior of this policy is to honor config-specific flag
This policy was introduced in CMake version 3.7. Unlike most policies,
CMake version 3.20.20210512-g35720ce does not warn by default when this policy
is not set and simply uses
OLD behavior. See documentation of the
variable to control the warning.
OLD behavior of a policy is
deprecated by definition
and may be removed in a future version of CMake.