Rootfs path must not contain spaces

[me21]

I have a project which contains find_package(CURL REQUIRED) command. It fails during configure step and complains it cannot find header files for curl.
The package libcurl4-openssl-dev is installed.
It appeared CMAKE_LIBRARY_ARCHITECTURE was empty when rootfs path contained spaces. Some autodetection magic was broken by that. When I created a symlink and specified rootfs path without spaces, the configure step succeeded.

Either that should be fixed, or a warning must be given in the docs.