# How can Cmake be configured to ignore such 'ADD\_SUBDIRECTORY is not an existing directory' errors?

**URL:** <https://discourse.cmake.org/t/how-can-cmake-be-configured-to-ignore-such-add-subdirectory-is-not-an-existing-directory-errors/2250>\
**Category:** Code\
**Created:** [November 27, 2020, 5:23am UTC](https://discourse.cmake.org/t/how-can-cmake-be-configured-to-ignore-such-add-subdirectory-is-not-an-existing-directory-errors/2250 "2020-11-27T05:23:32Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mirro187](https://discourse.cmake.org/letter_avatar_proxy/v4/letter/m/ad7895/32.png) [@mirro187](https://discourse.cmake.org/u/mirro187)\
**Post date:** [November 27, 2020, 5:23am UTC](https://discourse.cmake.org/t/how-can-cmake-be-configured-to-ignore-such-add-subdirectory-is-not-an-existing-directory-errors/2250/1 "2020-11-27T05:23:32Z")

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![QQ图片20201127131916](https://discourse.cmake.org/uploads/default/original/1X/52a4bc2092715e7be057d78ebd0727df53344e06.jpeg)

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**Author:** ![hsattler](https://discourse.cmake.org/letter_avatar_proxy/v4/letter/h/59ef9b/32.png) [@hsattler](https://discourse.cmake.org/u/hsattler)\
**Post date:** [November 27, 2020, 6:06am UTC](https://discourse.cmake.org/t/how-can-cmake-be-configured-to-ignore-such-add-subdirectory-is-not-an-existing-directory-errors/2250/2 "2020-11-27T06:06:02Z")

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if(EXISTS path-to-file-or-directory)

is your friend here. Check for the CMakeLists.txt file.