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# export

Export targets from the build tree for use by outside projects.

    export(EXPORT <export-name> [NAMESPACE <namespace>] [FILE <filename>])

Create a file `<filename>` that may be included by outside projects to import targets from the current project’s build tree. This is useful during cross-compiling to build utility executables that can run on the host platform in one project and then import them into another project being compiled for the target platform. If the `NAMESPACE` option is given the `<namespace>` string will be prepended to all target names written to the file.

Target installations are associated with the export `<export-name>` using the `EXPORT` option of the `install(TARGETS)` command.

The file created by this command is specific to the build tree and should never be installed. See the `install(EXPORT)` command to export targets from an installation tree.

The properties set on the generated IMPORTED targets will have the same values as the final values of the input TARGETS.

    export(TARGETS [target1 [target2 [...]]] [NAMESPACE <namespace>]
           [APPEND] FILE <filename> [EXPORT_LINK_INTERFACE_LIBRARIES])

This signature is similar to the `EXPORT` signature, but targets are listed explicitly rather than specified as an export-name. If the APPEND option is given the generated code will be appended to the file instead of overwriting it. The EXPORT_LINK_INTERFACE_LIBRARIES keyword, if present, causes the contents of the properties matching `(IMPORTED_)?LINK_INTERFACE_LIBRARIES(_<CONFIG>)?` to be exported, when policy CMP0022 is NEW. If a library target is included in the export but a target to which it links is not included the behavior is unspecified.

    export(PACKAGE <name>)

Store the current build directory in the CMake user package registry for package `<name>`. The find_package command may consider the directory while searching for package `<name>`. This helps dependent projects find and use a package from the current project’s build tree without help from the user. Note that the entry in the package registry that this command creates works only in conjunction with a package configuration file (`<name>Config.cmake`) that works with the build tree. In some cases, for example for packaging and for system wide installations, it is not desirable to write the user package registry. If the `CMAKE_EXPORT_NO_PACKAGE_REGISTRY` variable is enabled, the `export(PACKAGE)` command will do nothing.

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