




The function default-library returns a keyword naming the the default library.
On Linux, FreeBSD, AIX and x86/x64 Solaris platforms, the default library is :gtk. If you load the deprecated "capi-motif" module, then the library will be :motif.
On Microsoft Windows platforms, currently the only library available is :win32, hence this is the default library.
On Mac OS X platforms, the only library available in the native GUI image is :cocoa, hence this is the default library. In the Mac OS X/GTK+ image, the default library is :gtk, but you load the deprecated "capi-motif" module, then the library will be :motif.
In LispWorks for SPARC Solaris, currently the only library available is :motif, hence this is the default library.
CAPI User Guide and Reference Manual (Unix version) - 25 Feb 2015