mirror of
https://github.com/microsoft/vcpkg.git
synced 2024-12-21 11:37:50 +08:00
137 lines
3.7 KiB
Markdown
137 lines
3.7 KiB
Markdown
# vcpkg_check_features
|
|
|
|
The latest version of this document lives in the [vcpkg repo](https://github.com/Microsoft/vcpkg/blob/master/docs/maintainers/vcpkg_check_features.md).
|
|
Check if one or more features are a part of a package installation.
|
|
|
|
```cmake
|
|
vcpkg_check_features(
|
|
OUT_FEATURE_OPTIONS <out-var>
|
|
[PREFIX <prefix>]
|
|
[FEATURES
|
|
[<feature-name> <feature-var>]...
|
|
]
|
|
[INVERTED_FEATURES
|
|
[<feature-name> <feature-var>]...
|
|
]
|
|
)
|
|
```
|
|
|
|
The `<out-var>` should be set to `FEATURE_OPTIONS` by convention.
|
|
|
|
`vcpkg_check_features()` will:
|
|
|
|
- for each `<feature-name>` passed in `FEATURES`:
|
|
- if the feature is set, add `-D<feature-var>=ON` to `<out-var>`,
|
|
and set `<prefix>_<feature-var>` to ON.
|
|
- if the feature is not set, add `-D<feature-var>=OFF` to `<out-var>`,
|
|
and set `<prefix>_<feature-var>` to OFF.
|
|
- for each `<feature-name>` passed in `INVERTED_FEATURES`:
|
|
- if the feature is set, add `-D<feature-var>=OFF` to `<out-var>`,
|
|
and set `<prefix>_<feature-var>` to OFF.
|
|
- if the feature is not set, add `-D<feature-var>=ON` to `<out-var>`,
|
|
and set `<prefix>_<feature-var>` to ON.
|
|
|
|
If `<prefix>` is not passed, then the feature vars set are simply `<feature-var>`,
|
|
not `_<feature-var>`.
|
|
|
|
If `INVERTED_FEATURES` is not passed, then the `FEATURES` keyword is optional.
|
|
This behavior is deprecated.
|
|
|
|
If the same `<feature-var>` is passed multiple times,
|
|
then `vcpkg_check_features` will cause a fatal error,
|
|
since that is a bug.
|
|
|
|
## Examples
|
|
|
|
### Example 1: Regular features
|
|
|
|
```cmake
|
|
$ ./vcpkg install mimalloc[asm,secure]
|
|
|
|
# ports/mimalloc/portfile.cmake
|
|
vcpkg_check_features(OUT_FEATURE_OPTIONS FEATURE_OPTIONS
|
|
FEATURES
|
|
asm MI_SEE_ASM
|
|
override MI_OVERRIDE
|
|
secure MI_SECURE
|
|
)
|
|
|
|
vcpkg_cmake_configure(
|
|
SOURCE_PATH "${SOURCE_PATH}"
|
|
OPTIONS
|
|
# Expands to "-DMI_SEE_ASM=ON;-DMI_OVERRIDE=OFF;-DMI_SECURE=ON"
|
|
${FEATURE_OPTIONS}
|
|
)
|
|
```
|
|
|
|
### Example 2: Inverted features
|
|
|
|
```cmake
|
|
$ ./vcpkg install cpprestsdk[websockets]
|
|
|
|
# ports/cpprestsdk/portfile.cmake
|
|
vcpkg_check_features(OUT_FEATURE_OPTIONS FEATURE_OPTIONS
|
|
INVERTED_FEATURES
|
|
brotli CPPREST_EXCLUDE_BROTLI
|
|
websockets CPPREST_EXCLUDE_WEBSOCKETS
|
|
)
|
|
|
|
vcpkg_cmake_configure(
|
|
SOURCE_PATH "${SOURCE_PATH}"
|
|
OPTIONS
|
|
# Expands to "-DCPPREST_EXCLUDE_BROTLI=ON;-DCPPREST_EXCLUDE_WEBSOCKETS=OFF"
|
|
${FEATURE_OPTIONS}
|
|
)
|
|
```
|
|
|
|
### Example 3: Set multiple options for same feature
|
|
|
|
```cmake
|
|
$ ./vcpkg install pcl[cuda]
|
|
|
|
# ports/pcl/portfile.cmake
|
|
vcpkg_check_features(OUT_FEATURE_OPTIONS FEATURE_OPTIONS
|
|
FEATURES
|
|
cuda WITH_CUDA
|
|
cuda BUILD_CUDA
|
|
cuda BUILD_GPU
|
|
)
|
|
|
|
vcpkg_cmake_configure(
|
|
SOURCE_PATH "${SOURCE_PATH}"
|
|
OPTIONS
|
|
# Expands to "-DWITH_CUDA=ON;-DBUILD_CUDA=ON;-DBUILD_GPU=ON"
|
|
${FEATURE_OPTIONS}
|
|
)
|
|
```
|
|
|
|
### Example 4: Use regular and inverted features
|
|
|
|
```cmake
|
|
$ ./vcpkg install rocksdb[tbb]
|
|
|
|
# ports/rocksdb/portfile.cmake
|
|
vcpkg_check_features(OUT_FEATURE_OPTIONS FEATURE_OPTIONS
|
|
FEATURES
|
|
tbb WITH_TBB
|
|
INVERTED_FEATURES
|
|
tbb ROCKSDB_IGNORE_PACKAGE_TBB
|
|
)
|
|
|
|
vcpkg_cmake_configure(
|
|
SOURCE_PATH "${SOURCE_PATH}"
|
|
OPTIONS
|
|
# Expands to "-DWITH_TBB=ON;-DROCKSDB_IGNORE_PACKAGE_TBB=OFF"
|
|
${FEATURE_OPTIONS}
|
|
)
|
|
```
|
|
|
|
## Examples in portfiles
|
|
|
|
* [cpprestsdk](https://github.com/microsoft/vcpkg/blob/master/ports/cpprestsdk/portfile.cmake)
|
|
* [pcl](https://github.com/microsoft/vcpkg/blob/master/ports/pcl/portfile.cmake)
|
|
* [rocksdb](https://github.com/microsoft/vcpkg/blob/master/ports/rocksdb/portfile.cmake)
|
|
|
|
## Source
|
|
[scripts/cmake/vcpkg\_check\_features.cmake](https://github.com/Microsoft/vcpkg/blob/master/scripts/cmake/vcpkg_check_features.cmake)
|