The rscons build script method can be used to invoke an rscons subprocess using a subsidiary rscons build script. This can be used, for example, when a subproject is imported and a top-level configure or build task should also perform the same task in the subproject directory.

The first argument to the rscons method specifies either a directory name, or the path to the subsidiary Rsconscript file to execute. Any additional arguments are passed to rscons when it executes the subsidiary script. rscons will change working directories to the directory containing the subsidiary script when executing it.

For example:

configure do
  rscons "subproject", "configure"
end

task "build" do
  rscons "subproject/Rsconscript", "build"
end

It is also perfectly valid to perform different task(s) in the subsidiary script from the one being performed in the top-level script. For example, in a project that requires a particular cross compiler, the top-level configure script could build the necessary cross compiler using a subsidiary build script. This could look something like:

configure do
  rscons "cross/Rsconscript"
  check_c_compiler "i686-elf-gcc"
end

This would build, and if necessary first configure, using the cross/Rsconscript subsidiary build script. Subsidiary build scripts are executed from within the directory containing the build script.