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export: Increase maximum policy version in exported files to 3.21

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The files generatd by `install(EXPORT)` and `export()` commands
are known to work with policies as of CMake 3.21, so enable them
in sufficiently new CMake versions.
This commit is contained in:
Brad King
2021-10-08 10:18:58 -04:00
parent 0f31463c37
commit b3248c083f
1 changed files with 2 additions and 2 deletions
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Source/cmExportFileGenerator.cxx
+2 -2
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@@ -924,13 +924,13 @@ void cmExportFileGenerator::GeneratePolicyHeaderCode(std::ostream& os)
// Isolate the file policy level.
// Support CMake versions as far back as 2.6 but also support using NEW
// policy settings for up to CMake 3.20 (this upper limit may be reviewed
// policy settings for up to CMake 3.21 (this upper limit may be reviewed
// and increased from time to time). This reduces the opportunity for CMake
// warnings when an older export file is later used with newer CMake
// versions.
/* clang-format off */
os << "cmake_policy(PUSH)\n"
<< "cmake_policy(VERSION 2.6...3.20)\n";
<< "cmake_policy(VERSION 2.6...3.21)\n";
/* clang-format on */
}