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Add option for local package override (#123)

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* add option for local package override

* print info on the source directory
This commit is contained in:
Lars Melchior
2020-05-29 09:58:39 +02:00
committed by GitHub
parent 829262cbd3
commit 54a2d80d1e
5 changed files with 62 additions and 3 deletions
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README.md
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@@ -137,6 +137,12 @@ CPM can be configured to use `find_package` to search for locally installed depe
If the option `CPM_LOCAL_PACKAGES_ONLY` is set, CPM will emit an error if the dependency is not found locally.
These options can also be set as environmental variables.
## Local package override
Library developers are often in the situation where they work on a locally checked out dependency at the same time as on a consumer.
It is possible to override the consumer's dependency version with the local one by supplying the CMake option `CPM_<dependency name>_SOURCE`.
For example, to use the local version of `Dep` at the absolute path `/path/to/dep`, the consumer can be build with `cmake -H. -Bbuild -DCPM_Dep_SOURCE=/path/to/dep`.
## Snippets
These examples demonstrate how to include some well-known projects with CPM.