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Add deprecation warnings for policies CMP0143 and below

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The OLD behaviors of all policies are deprecated, but only by
documentation.  Add an explicit deprecation diagnostic for policies
introduced in CMake 3.26 and below to encourage projects to port
away from setting policies to OLD.
This commit is contained in:
Brad King
2025-07-02 09:35:13 -04:00
parent 0a385b880a
commit 94ff184a63
2 changed files with 9 additions and 1 deletions
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2
Source/cmMakefile.cxx
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@@ -4077,7 +4077,7 @@ bool cmMakefile::SetPolicy(cmPolicies::PolicyID id,
}
// Deprecate old policies.
if (status == cmPolicies::OLD && id <= cmPolicies::CMP0142 &&
if (status == cmPolicies::OLD && id <= cmPolicies::CMP0143 &&
!(this->GetCMakeInstance()->GetIsInTryCompile() &&
(
// Policies set by cmCoreTryCompile::TryCompileCode.

8
Tests/RunCMake/VSSolution/CMP0143-OLD-stderr.txt Normal file
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@@ -0,0 +1,8 @@
^CMake Deprecation Warning at CMakeLists\.txt:[0-9]+ \(cmake_minimum_required\):
The OLD behavior for policy CMP0143 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\.$