[cmake-developers] Cross compiling toolchain variables

Stephen Kelly steveire at gmail.com
Wed Nov 13 18:24:52 EST 2013


Brad King wrote:
> If I'm reading that thread correctly, the conclusion was the following
> proposal:
> 
> - CMAKE_INSTALL_PREFIX will be set to the install prefix in which
>   files will appear on the target device.  The path may not exist
>   on the host anywhere.  Project code may use ${CMAKE_INSTALL_PREFIX}
>   to generate and compile-in paths to be used at runtime on the
>   target device.
> 
> - CMAKE_EXTERNAL_INSTALL_PREFIX can be set to a staging install prefix
>   on the host.  This value will be used to set the default for
>   CMAKE_INSTALL_PREFIX inside generated cmake_install.cmake files.
>   The actual install rules will still use
>   $ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}, but the ${CMAKE_INSTALL_PREFIX}
>   in this context will be the value of CMAKE_EXTERNAL_INSTALL_PREFIX.

Sounds good to me. I haven't looked into the implementation details like 
that yet, but I'll do so tomorrow.
 
> In other words, the project is only aware of CMAKE_INSTALL_PREFIX at
> configuration time, and CMAKE_EXTERNAL_INSTALL_PREFIX is used only at
> "make install" time to stage target-destined files on the host.
> How about the name "CMAKE_STAGING_PREFIX"?

Sounds good to me.

Thanks,

Steve.





More information about the cmake-developers mailing list