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Call FetchContent_GetProperties before DOWNLOAD_ONLY population (#113)

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* call FetchContent_GetProperties before checking populated

* fix old CPM.cmake links

* update description

* bump version
This commit is contained in:
Lars Melchior
2020-04-29 12:40:12 +02:00
committed by GitHub
parent ca33abc236
commit 3fff3ca70d
2 changed files with 10 additions and 9 deletions
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8
README.md
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@@ -73,7 +73,7 @@ CPMAddPackage(
target_link_libraries(tests Catch2)
```
See the [examples directory](https://github.com/TheLartians/CPM/tree/master/examples) for complete examples with source code or the [wiki](https://github.com/TheLartians/CPM/wiki/More-Snippets) for example snippets.
See the [examples directory](https://github.com/TheLartians/CPM.cmake/tree/master/examples) for complete examples with source code or the [wiki](https://github.com/TheLartians/CPM.cmake/wiki/More-Snippets) for example snippets.
## Adding CPM
@@ -104,7 +104,7 @@ Dependencies using CPM will automatically use the updated script of the outermos
## Limitations
- **No pre-built binaries** For every new build directory, all dependencies are initially downloaded and built from scratch. To avoid extra downloads it is recommend to set the [`CPM_SOURCE_CACHE`](#CPM_SOURCE_CACHE) environmental variable. Using a caching compiler such as [ccahe](https://github.com/TheLartians/Ccache.cmake) can drastically reduce build time.
- **Dependent on good CMakeLists** Many libraries do not have CMakeLists that work well for subprojects. Luckily this is slowly changing, however, until then, some manual configuration may be required (see the snippets [below](#snippets) for examples). For best practices on preparing projects for CPM, see the [wiki](https://github.com/TheLartians/CPM/wiki/Preparing-projects-for-CPM).
- **Dependent on good CMakeLists** Many libraries do not have CMakeLists that work well for subprojects. Luckily this is slowly changing, however, until then, some manual configuration may be required (see the snippets [below](#snippets) for examples). For best practices on preparing projects for CPM, see the [wiki](https://github.com/TheLartians/CPM.cmake/wiki/Preparing-projects-for-CPM).
- **First version used** In diamond-shaped dependency graphs (e.g. `A` depends on `C`@1.1 and `B`, which itself depends on `C`@1.2 the first added dependency will be used (in this case `C`@1.1). In this case, B requires a newer version of `C` than `A`, so CPM will emit a warning. This can be resolved by adding a new version of the dependency in the outermost project.
For projects with more complex needs and where an extra setup step doesn't matter, it may be worth to check out an external C++ package manager such as [vcpkg](https://github.com/microsoft/vcpkg), [conan](https://conan.io) or [hunter](https://github.com/ruslo/hunter).
@@ -140,7 +140,7 @@ These options can also be set as environmental variables.
## Snippets
These examples demonstrate how to include some well-known projects with CPM.
See the [wiki](https://github.com/TheLartians/CPM/wiki/More-Snippets) for more snippets.
See the [wiki](https://github.com/TheLartians/CPM.cmake/wiki/More-Snippets) for more snippets.
### [Catch2](https://github.com/catchorg/Catch2)
@@ -270,4 +270,4 @@ For a full example on using CPM to download and configure lua with sol2 see [her
### Full Examples
See the [examples directory](https://github.com/TheLartians/CPM/tree/master/examples) for full examples with source code and check out the [wiki](https://github.com/TheLartians/CPM/wiki/More-Snippets) for many more example snippets.
See the [examples directory](https://github.com/TheLartians/CPM.cmake/tree/master/examples) for full examples with source code and check out the [wiki](https://github.com/TheLartians/CPM.cmake/wiki/More-Snippets) for many more example snippets.