Add deprecation warnings for policies CMP0071 and below

The OLD behaviors of all policies are deprecated, but only by
documentation.  Add an explicit deprecation diagnostic for policies
introduced in CMake 3.10 and below to encourage projects to port away
from setting policies to OLD.
This commit is contained in:
Brad King 2019-10-07 13:26:23 -04:00
parent 451360c729
commit c78ae16d81
3 changed files with 19 additions and 1 deletions

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@ -0,0 +1,8 @@
deprecate-policy-old
--------------------
* An explicit deprecation diagnostic was added for policy ``CMP0070``
and policy ``CMP0071`` (``CMP0069`` and below were already deprecated).
The :manual:`cmake-policies(7)` manual explains that the OLD behaviors
of all policies are deprecated and that projects should port to the
NEW behaviors.

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@ -4492,7 +4492,7 @@ bool cmMakefile::SetPolicy(cmPolicies::PolicyID id,
// Deprecate old policies, especially those that require a lot
// of code to maintain the old behavior.
if (status == cmPolicies::OLD && id <= cmPolicies::CMP0069 &&
if (status == cmPolicies::OLD && id <= cmPolicies::CMP0071 &&
!(this->GetCMakeInstance()->GetIsInTryCompile() &&
(
// Policies set by cmCoreTryCompile::TryCompileCode.

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^CMake Deprecation Warning at CMP0070-OLD.cmake:[0-9]+ \(cmake_policy\):
The OLD behavior for policy CMP0070 will be removed from a future version
of CMake.
The cmake-policies\(7\) manual explains that the OLD behaviors of all
policies are deprecated and that a policy should be set to OLD only under
specific short-term circumstances. Projects should be ported to the NEW
behavior and not rely on setting a policy to OLD.
Call Stack \(most recent call first\):
CMakeLists.txt:[0-9]+ \(include\)$