Those tables were once used to decide what symbols are visible to
modules, but they were outdated. The only real usage was that, since
it was taking the address of symbols, linkage should fail if the
symbols were not available.
Now the proper way to make symbols available to modules should
be to use the _X_EXPORT macro, or not compile with hidden symbols,
so that all symbols would be available.
All symbols in the tables were revised to ensure they are exported,
and only symbols that were not exported are ClientSleepUntil() and
DuplicateModule(), that were not in the sdk for quite some time
already, and should not have any users outside of the X Server
(and/or builtin modules).
Save in a few special cases, _X_EXPORT should not be used in C source
files. Instead, it should be used in headers, and the proper C source
include that header. Some special cases are symbols that need to be
shared between modules, but not expected to be used by external drivers,
and symbols that are accessible via LoaderSymbol/dlopen.
This patch also adds conditionally some new sdk header files, depending
on extensions enabled. These files were added to match pattern for
other extensions/modules, that is, have the headers "deciding" symbol
visibility in the sdk. These headers are:
o Xext/panoramiXsrv.h, Xext/panoramiX.h
o fbpict.h (unconditionally)
o vidmodeproc.h
o mioverlay.h (unconditionally, used only by xaa)
o xfixes.h (unconditionally, symbols required by dri2)
LoaderSymbol and similar functions now don't have different prototypes,
in loaderProcs.h and xf86Module.h, so that both headers can be included,
without the need of defining IN_LOADER.
xf86NewInputDevice() device prototype readded to xf86Xinput.h, but
not exported (and with a comment about it).
These symbols were removed from the X Server, or never declared.
One symbol that may need special attention is XkbBuildCoreState(),
that doesn't have a prototype anywhere, but is called from
xkb/xkbEvents.c:XkbFilterEvents(), and also used by the macros
XkbStateFieldFromRec() and XkbGrabStateFromRec() defined in
include/xkbstr.h.
fb/wfbrename.h also may need some cleanup, as it makes several
"renames" of non existing symbols.
lists, a really bad hash table, the last vestiges of the other backends,
and some miscellaneous cleanups. Good for dropping 300k from the size of
the built server on x86.
Add XSERV_t, TRANS_SERVER, TRANS_REOPEN to quash warnings.
Add #include <dix-config.h> or <xorg-config.h>, as appropriate, to all
source files in the xserver/xorg tree, predicated on defines of
HAVE_{DIX,XORG}_CONFIG_H. Change all Xfont includes to
<X11/fonts/foo.h>.
