NAME

symlink -- A build check method that checks if target points to dependency.

USAGE

   build_check symlink

DESCRIPTION

The symlink method will only execute the action if the target is not a symlink to the dependency. It is exactly like the exact_match method when it comes to repositories or build_cache. For example,

   $(ROOT)/include/%.h : %.h : build_check symlink
         &ln -fr $(input) $(output)

publishes a file, but does not repeat this when the file changes (i.e. a generated header).