this way the users can influence which install prefix will appear in the
generated code
install prefix have to be relative - we are doing the hermetic build
modify our shell script to copy the result of the build into the target directory
(we can not leave it in temp directory, it will be deleted)
* external build framework macro and cmake_external rule
* declare deps headers as inputs as well; correct sed expression
* use symlinking instead of copying, filter duplicates
* correct detect root
* corrections for copying tools and include directories
* correct review comments
* provide a way to pass modified attributes to the framework function
create a function that creates a dict from ctx.attr,
replaces/adds values and creates a resulting struct;
have mandatory attributes as mandatory parameters to this function
* correct review comments
* correct detect_root
* introduce parameter for passing user defined link options
* add documentation, define default static library to be built
* correct/improve documentation
* more correct gathering headers and include directories from dependencies
* correct review comments
* correct passing transitive link options
