User guide

C-5
Compile-Time Options
VCS looks in this directory for a file with the same name as the
module or UDP identifier in the instance (not the instance name).
If it finds this file, VCS looks in the file for the module or UDP
definition to resolve the instance.
Include the +libext compile-time option to specify the file name
extension of the files you want VCS to look for in these directories.
+incdir+directory+
Specifies the directory or directories that VCS searches for include
files used in the `include compiler directive. More than one
directory may be specified, separated by the plus (+) character.
+libext+extension+
Specifies that VCS search only for files with the specified file name
extensions in a library directory. You can specify more than one
extension, separating the extensions with the plus (+) character.
For example, +libext+.v+.V+ specifies searching for files with
either the .v or .V extension in a library. The order in which you
add file name extensions to this option does not specify an order
in which VCS searches files in the library with these file name
extensions.
+liborder
Specifies searching for module definitions for unresolved module
instances through the remainder of the library where VCS finds
the instance, then searching the next and then the next library on
the vcs command line before searching in the first library on the
command line.
+librescan
Specifies always searching libraries for module definitions for
unresolved module instances beginning with the first library on
the vcs command line.
+libverbose
Tells VCS to display a message when it finds a module definition