33 lines
1.7 KiB
Plaintext
33 lines
1.7 KiB
Plaintext
Use of extensions throughout the X server tree
|
|
----------------------------------------------
|
|
|
|
Optional extensions:
|
|
The server will still build if your toolchain does not support these
|
|
extensions, although the results may not be optimal.
|
|
|
|
* _X_SENTINEL(x): member x of the passed structure must be NULL, e.g.:
|
|
void parseOptions(Option *options _X_SENTINEL(0));
|
|
parseOptions("foo", "bar", NULL); /* this is OK */
|
|
parseOptions("foo", "bar", "baz"); /* this is not */
|
|
This definition comes from Xfuncproto.h in the core
|
|
protocol headers.
|
|
* _X_ATTRIBUTE_PRINTF(x, y): This function has printf-like semantics;
|
|
check the format string when built with
|
|
-Wformat (gcc) or similar.
|
|
* _X_EXPORT: this function should appear in symbol tables.
|
|
* _X_HIDDEN: this function should not appear in the _dynamic_ symbol
|
|
table.
|
|
* _X_INTERNAL: like _X_HIDDEN, but attempt to ensure that this function
|
|
is never called from another module.
|
|
* _X_INLINE: inline this functon if possible (generally obeyed unless
|
|
disabling optimisations).
|
|
* _X_DEPRECATED: warn on use of this function.
|
|
|
|
Mandatory extensions:
|
|
The server will not build if your toolchain does not support these extensions.
|
|
|
|
* named initialisers: explicitly initialising structure members, e.g.:
|
|
struct foo bar = { .baz = quux, .brian = "dog" };
|
|
* variadic macros: macros with a variable number of arguments, e.g.:
|
|
#define DebugF(x, ...) /**/
|