A single Dana project directory is often sufficient, together with Dana's standard library, to describe all of the functionality that you need for a given project. Sometimes, however, we might like to access the code from another project.
Dana supports inter-project code sharing using search paths.
By default, when you compile or run a program, the compiler and runtime have two search paths for source files or compiled components: the current directory, and the Dana standard library. The current directory is searched first, then the standard library.
You can specify additional search paths using the -sp parameter for either the compiler or the runtime. Search paths are specified using a semicolon-separated list, for example:
dnc MyProgram.dn -sp "folderA;folderB"
In this case, the compiler will have four search paths, in this order:
The same logic applies to the Dana runtime, when searching for components.
You can also use the environment variable
DANA_SP to specify system-wide search paths for all uses of the compiler or runtime. If
DANA_SP is specified, the search order becomes:
Finally, you can use the command-line option
-spo to specify search paths and ignore anything on