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27 lines
928 B
Markdown
27 lines
928 B
Markdown
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# vcpkg_backup_restore_env_vars
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The latest version of this document lives in the [vcpkg repo](https://github.com/Microsoft/vcpkg/blob/master/docs/maintainers/vcpkg_backup_restore_env_vars.md).
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Backup or restore the environment variables
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## Usage:
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```cmake
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vcpkg_backup_env_variables(VARS [<environment-variable>...])
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vcpkg_restore_env_variables(VARS [<environment-variable>...])
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```
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### VARS
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The variables to back up or restore.
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These are placed in the parent scope, so you must backup and restore
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from the same scope.
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## Notes
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One must always call `vcpkg_backup_env_variables` before
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`vcpkg_restore_env_variables`; however, `vcpkg_restore_env_variables`
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does not change the back up variables, and so you may call `restore`
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multiple times for one `backup`.
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## Source
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[scripts/cmake/vcpkg\_backup\_restore\_env\_vars.cmake](https://github.com/Microsoft/vcpkg/blob/master/scripts/cmake/vcpkg_backup_restore_env_vars.cmake)
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