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This feature was originally added by commit v3.9.0-rc1~71^2~2 (find_*: Add a new PackageRoot search path group, 2017-05-03) and documented by commit v3.9.0-rc1~71^2 (find_*: Add docs for PackageRoot search path group, 2017-05-03). However, we had to disable the feature and remove the documentation in commit v3.9.1~2^2 (find_*: Disable the PACKAGE_ROOT search path group for CMake 3.9, 2017-08-08) due to breaking projects that used `PackageName_ROOT` variables themselves. Add policy `CMP0074` to restore the `PackageName_ROOT` variable behavior in a compatible way. Also revise the stack of root paths to store the paths themselves rather than the package names. This way the policy can be considered at the `find_package` call site instead of individual `find_` calls inside a find module. Co-Author: Chuck Atkins <chuck.atkins@kitware.com> Issue: #17144
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357 B
ReStructuredText
9 lines
357 B
ReStructuredText
find-package_root-restore
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-------------------------
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* The :command:`find_package` command now searches a prefix specified by
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a ``PackageName_ROOT`` CMake or environment variable. Package roots are
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maintained as a stack so nested calls to all ``find_*`` commands inside
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find modules also search the roots as prefixes.
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See policy :policy:`CMP0074`.
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