1 /* config.h.in --- xscreensaver, Copyright (c) 1998-2000 Jamie Zawinski.
3 * The best way to set these parameters is by running the included `configure'
4 * script. That examines your system, and generates `config.h' from
7 * If something goes very wrong, you can edit `config.h' directly, but beware
8 * that your changes will be lost if you ever run `configure' again.
12 /* *************************************************************************
13 CONFIGURING SERVER EXTENSIONS
14 ************************************************************************* */
16 /* Define this if you have the XReadDisplay extension (I think this is an
17 SGI-only thing; it's in <X11/extensions/readdisplay.h>.) A few of the
18 screenhacks will take advantage of this if it's available.
20 #undef HAVE_READ_DISPLAY_EXTENSION
22 /* Define this if you have the XHPDisableReset function (an HP only thing.)
24 #undef HAVE_XHPDISABLERESET
26 /* First, some background: there are three distinct server extensions which
27 * are useful to a screen saver program: they are XIDLE, MIT-SCREEN-SAVER,
30 * The XIDLE extension resides in .../contrib/extensions/xidle/ on the X11R5
31 * contrib tape. This extension lets the client get accurate idle-time
32 * information from the X server in a potentially more reliable way than by
33 * simply watching for keyboard and mouse activity. However, the XIDLE
34 * extension has apparently not been ported to X11R6.
36 * The SCREEN_SAVER extension is found (as far as I know) only in the SGI
37 * X server, and it exists in all releases since (at least) Irix 5. The
38 * relevant header file is /usr/include/X11/extensions/XScreenSaver.h.
40 * The similarly-named MIT-SCREEN-SAVER extension came into existence long
41 * after the SGI SCREEN_SAVER extension was already in use, and resides in
42 * .../contrib/extensions/screensaver/ on the X11R6 contrib tape. It is
43 * also found in certain recent X servers built in to NCD X terminals.
45 * The MIT extension does basically the same thing that the XIDLE extension
46 * does, but there are two things wrong with it: first, because of the way
47 * the extension was designed, the `fade' option to XScreenSaver will be
48 * uglier: just before the screen fades out, there will be an unattractive
49 * flicker to black, because this extension blanks the screen *before*
50 * telling us that it is time to do so. Second, this extension is known to
51 * be buggy; on the systems I use, it works, but some people have reported
52 * X server crashes as a result of using it. XScreenSaver uses this
53 * extension rather conservatively, because when I tried to use any of its
54 * more complicated features, I could get it to crash the server at the
57 * In short, the MIT-SCREEN-SAVER extension is a piece of junk. The older
58 * SGI SCREEN_SAVER extension works great, as does XIDLE. It would be nice
59 * If those two existed on more systems, that is, would be adopted by the
60 * X Consortium in favor of their inferior "not-invented-here" entry.
63 /* Define this if you have the XIDLE extension installed. If you have the
64 * XIDLE extension, this is recommended. (You have this extension if the
65 * file /usr/include/X11/extensions/xidle.h exists.) Turning on this flag
66 * lets XScreenSaver work better with servers which support this extension;
67 * but it will still work with servers which do not suport it, so it's a good
68 * idea to compile in support for it if you can.
70 #undef HAVE_XIDLE_EXTENSION
72 /* Define this if you have the MIT-SCREEN-SAVER extension installed. See the
73 * caveats about this extension, above. (It's available if the file
74 * /usr/include/X11/extensions/scrnsaver.h exists.)
76 #undef HAVE_MIT_SAVER_EXTENSION
78 /* Define this if you have the SGI SCREEN_SAVER extension. This is standard
79 * on Irix systems, and not available elsewhere.
81 #undef HAVE_SGI_SAVER_EXTENSION
83 /* Define this if you have the SGI-VIDEO-CONTROL extension. This is standard
84 * on Irix systems, and not available elsewhere.
86 #undef HAVE_SGI_VC_EXTENSION
88 /* Define this if you have the XDPMS extension. This is standard on
89 * sufficiently-recent XFree86 systems, and possibly elsewhere. (It's
90 * available if the file /usr/include/X11/extensions/dpms.h exists.)
92 #undef HAVE_DPMS_EXTENSION
94 /* Define this if you have the functions XF86VidModeGetModeLine() and
95 * XF86VidModeGetViewPort(), in support of virtual desktops where the
96 * X server's root window is bigger than the actual screen. This is
97 * an XFree86 thing, and probably doesn't exist elsewhere. (It's
98 * available if the file /usr/include/X11/extensions/xf86vmode.h exists.)
100 #undef HAVE_XF86VMODE
102 /* Define this if you have the functions XF86VidModeGetGamma() and
103 * XF86VidModeSetGamma(), which allow clients to change the gamma
104 * response of the monitor. This is an XFree86 4.0.x thing, and
105 * probably doesn't exist elsewhere. (It's available if the file
106 * /usr/include/X11/extensions/xf86vmode.h exists and has stuff about
109 #undef HAVE_XF86VMODE_GAMMA
111 /* Define this if you have the functions XF86VidModeGetGammaRamp() and
112 * XF86VidModeSetGammaRamp(), which provide finer-grained control than
113 * XF86VidMode[GS]etGamma(). These appeared in XFree86 4.1.0.
115 #undef HAVE_XF86VMODE_GAMMA_RAMP
117 /* Define this if you have the Xinerama extension. This is standard on
118 * sufficiently-recent XFree86 systems, and possibly elsewhere. (It's
119 * available if the file /usr/include/X11/extensions/Xinerama.h exists.)
123 /* Define this if you have a Linux-like /proc/interrupts file which can be
124 * examined to determine when keyboard activity has occurred.
126 #undef HAVE_PROC_INTERRUPTS
130 /* *************************************************************************
131 CONFIGURING GRAPHICS TOOLKITS
132 ************************************************************************* */
134 /* Define this if you have Motif.
138 /* Define this if you have the XmComboBox Motif widget (Motif 2.0.)
140 #undef HAVE_XMCOMBOBOX
142 /* Define this if you have Gtk.
146 /* Define this if you have Gnome and want to build support for the
147 xscreensaver control panel in the Gnome Control Center (gnomecc).
151 /* Define this if you have the XML library.
155 /* Define this if you have the XPM library installed. Some of the demos can
156 * make use of this if it is available.
160 /* Define this if you have the Xmu library. This is standard part of X, and
161 * if your vendor doesn't ship it, you should report that as a bug.
165 /* Define this if you have OpenGL. Some of the demos require it, so if you
166 * don't have it, then those particular demos won't be built. (This won't
167 * affect the screen saver as a whole.)
171 /* Define this if you have OpenGL, but it's the MesaGL variant. (The
172 libraries have different names.) (HAVE_GL should be defined too.)
176 /* Define this if your version of OpenGL has the glBindTexture() routine.
177 This is the case for OpenGL 1.1, but not for OpenGL 1.0.
179 #undef HAVE_GLBINDTEXTURE
181 /* Define this if you have the -lgle and -lmatrix libraries (GL extrusion.)
185 /* Define this if you have the -lgle from GLE version 3
189 /* Define this if you have the X Shared Memory Extension.
191 #undef HAVE_XSHM_EXTENSION
193 /* Define this if you have the X Double Buffer Extension.
195 #undef HAVE_DOUBLE_BUFFER_EXTENSION
197 /* Some screenhacks like to run an external program to generate random pieces
198 of text; set this to the one you like. Note that this is just the
199 default; X resources can be used to override it.
201 #define FORTUNE_PROGRAM "fortune"
205 /* *************************************************************************
206 CONFIGURING PASSWORD AUTHENTICATION
207 ************************************************************************* */
209 /* Define this to remove the option of locking the screen at all.
213 /* Define this if you want to use Kerberos authentication to lock/unlock the
214 * screen instead of your local password. This currently uses Kerberos V4,
215 * but a V5 server with V4 compatibility will work. WARNING: DO NOT USE AFS
216 * string-to-key passwords with this option. This option currently *only*
217 * works with standard Kerberos des_string_to_key. If your password is an
218 * AFS password and not a kerberos password, it will not authenticate
219 * properly. See the comments in driver/kpasswd.c for more information if you
224 /* Define this if you have Kerberos 5, meaning we need to use the Kerberos 4
225 * compatibility layer.
227 #undef HAVE_KERBEROS5
229 /* Define this if you want to use PAM (Pluggable Authentication Modules)
230 * to lock/unlock the screen, instead of standard /etc/passwd authentication.
234 /* If PAM is being used, this is the name of the PAM service that xscreensaver
235 * will authenticate as. The default is "xscreensaver", which means that the
236 * PAM library will look for an "xscreensaver" line in /etc/pam.conf, or (on
237 * recent Linux systems) will look for a file called /etc/pam.d/xscreensaver.
238 * Some systems might already have a PAM installation that is configured for
239 * xlock, so setting this to "xlock" would also work in that case.
241 #define PAM_SERVICE_NAME "xscreensaver"
243 /* Define if you have PAM and pam_strerror() requires two arguments. */
244 #undef PAM_STRERROR_TWO_ARGS
246 /* Define this if your system uses `shadow' passwords, that is, the passwords
247 * live in /etc/shadow instead of /etc/passwd, and one reads them with
248 * getspnam() instead of getpwnam(). (Note that SCO systems do some random
249 * other thing; others might as well. See the ifdefs in driver/passwd-pwent.c
250 * if you're having trouble related to reading passwords.)
252 #undef HAVE_SHADOW_PASSWD
254 /* Define this if your system is Digital or SCO Unix with so-called ``Enhanced
255 Security'', that is, the passwords live in /tcb/files/auth/<x>/<xyz>
256 instead of in /etc/passwd, and one reads them with getprpwnam() instead
259 #undef HAVE_ENHANCED_PASSWD
261 /* Define this if your system is Solaris with ``adjunct'' passwords (this is
262 the version where one gets at the passwords with getpwanam() instead of
263 getpwnam().) I haven't tested this one, let me know if it works.
265 #undef HAVE_ADJUNCT_PASSWD
267 /* Define this if you are running HPUX with so-called ``Secure Passwords''
268 (if you have /usr/include/hpsecurity.h, you probably have this.) I
269 haven't tested this one, let me know if it works.
271 #undef HAVE_HPUX_PASSWD
273 /* Define this if you are on a system that supports the VT_LOCKSWITCH and
274 VT_UNLOCKSWITCH ioctls. If this is defined, then when the screen is
275 locked, switching to another virtual terminal will also be prevented.
276 That is, the whole console will be locked, rather than just the VT on
277 which X is running. (Well, that's the theory anyway -- in practice,
278 I haven't yet figured out how to make that work.)
280 #undef HAVE_VT_LOCKSWITCH
283 /* Define this if you the openlog(), syslog(), and closelog() functions.
284 This is used for logging failed login attempts.
289 /* *************************************************************************
290 OTHER C ENVIRONMENT JUNK
291 ************************************************************************* */
293 /* Define this to void* if you're using X11R4 or earlier. */
296 /* Define if you have the nice function. */
299 /* Define if you have the setpriority function. */
300 #undef HAVE_SETPRIORITY
302 /* Define to empty if the keyword does not work. */
305 /* Define if you have <sys/wait.h> that is POSIX.1 compatible. */
306 #undef HAVE_SYS_WAIT_H
308 /* Define as __inline if that's what the C compiler calls it. */
311 /* Define to `int' if <sys/types.h> doesn't define. */
314 /* Define to `int' if <sys/types.h> doesn't define. */
317 /* Define as the return type of signal handlers (int or void). */
320 /* Define to `unsigned' if <sys/types.h> doesn't define. */
323 /* Define if you have the ANSI C header files. */
326 /* Define if you can safely include both <sys/time.h> and <time.h>. */
327 #undef TIME_WITH_SYS_TIME
329 /* Define if you have the gettimeofday function. */
330 #undef HAVE_GETTIMEOFDAY
332 /* Define if gettimeofday requires two arguments. */
333 #undef GETTIMEOFDAY_TWO_ARGS
335 /* Define if you have the putenv function. */
338 /* Define if you have the select function. */
341 /* Define if you have the getcwd function. */
344 /* Define if you have the getcwd function. */
347 /* Define if you have the realpath function. */
350 /* Define if you have the uname function. */
353 /* Define if you have the fcntl function. */
356 /* Define if you have the sigaction function. */
357 #undef HAVE_SIGACTION
359 /* Define this if you have the setrlimit function. */
360 #undef HAVE_SETRLIMIT
362 /* Define if you have the <unistd.h> header file. */
365 /* Define if you have the <crypt.h> header file. */
368 /* Define if you have <sys/select.h> that defines fd_set and FD_SET. */
369 #undef HAVE_SYS_SELECT_H
371 /* Define to use sigaction() instead of signal() for SIGCHLD-related activity.
372 This is necessary at least on SCO OpenServer 5, due to a Unix kernel bug.
376 /* Define this if you do pings with a `struct icmp' and a `icmp_id' slot.
380 /* Define this if you do pings with a `struct icmphdr' and a `un.echo.id' slot.