Frama-C:
Plug-ins:
Libraries:

Frama-C API - Lib

Unless you are working in the kernel of Frama-C, you should not use this.

val dirs : Filepath.Normalized.t list

Directories where library and executable files are located, in order of priority.

val path : string

The colon-separated concatenation of dirs.

Last directory of libdirs (the directory of frama-c installation)