The fbconf_xorg/src directory contains these Makefiles:

Makefile Master Makefile, builds fbconf_xorg(1M), et. al.

Makefile.common Common definitions, included by all other Makefile.* files

Makefile.fbc Builds libfbconf_xorg.so.1 for fbconf_xorg(1M)

Makefile.gfx Builds gfx/libgfx.a as a stripped-down, PIC version

Makefile.xf86 Builds xf86/libxf86conf.a, the open source XFree86 parser

Makefile.<xfb> Builds libSUNW<xfb>_conf.so.1 for <xfb>

To implement a new libSUNW<xfb>_conf.so.1 shared library for a new <xfb>

frame buffer device:

Create the fbconf_xorg/<xfb> source directory.

Start populating the new source directory by creating

fbconf_xorg/<xfb>/<xfb>_properties.c

and

fbconf_xorg/<xfb>/<xfb>_properties.h,

based on existing examples, such as in fbconf_xorg/efb.

Prominent details will be:

SUNW<xfb>_api_version

API version number (prominent but trivial)

<xfb>_option[]

Command line option descriptors

(see fbopt_descr_t, etc. in fbc_getargs.h)

<xfb>_propt_fn[]

-propt display function addresses

(see fbc_propt.c)

SUNW<xfb>_get_properties()

Initialization function for the <xfb> varient of

fbconfig_xorg(1M)

(see fbc_varient_t in fbc_properties.h)

Repeat the process with other fbconf_xorg/<xfb>/*.[ch] sources

as needed, until all of the anticipated symbols have been defined

and the intended <xfb> functionality has been implemented.

When it makes sense, move sufficiently common code into

fbconf_xorg/fbc to be incorporated into libfbconf_xorg.so.1 (or

into fbconf_xorg, if the code isn't referenced from a shared

library).

Create a fbconf_xorg/Makefile.<xfb> makefile. Invoke it from

fbconf_xorg/Makefile, following existing examples. Update

fbconf_xorg/Makefile.common as necessary.