FVWM3 on Kubuntu: unknown type name ‘RROutput’

[voltumna]

Hello All,
i have tried to do the ./configure && make and it all goes well, but then it fails with the following

What am I missing? this is a 'new' installation and I have put all the dependencies I could

... Making all in libs make[2]: Entering directory '/home/me/Downloads/fvwm3-master/libs' CC FScreen.o In file included from FScreen.c:29: FScreen.h:79:2: error: unknown type name ‘RROutput’ 79 | RROutput rr_output; | ^~~~~~~~ FScreen.h:162:41: error: unknown type name ‘XRRScreenChangeNotifyEvent’ 162 | void monitor_output_change(Display *, XRRScreenChangeNotifyEvent *); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ FScreen.c: In function ‘FScreenSelect’: FScreen.c:235:2: warning: implicit declaration of function ‘XRRSelectInput’; did you mean ‘XSelectInput’? [-Wimplicit-function-declaration] 235 | XRRSelectInput(disp, DefaultRootWindow(disp), | ^~~~~~~~~~~~~~ | XSelectInput FScreen.c:236:3: error: ‘RRScreenChangeNotifyMask’ undeclared (first use in this function) 236 | RRScreenChangeNotifyMask | RROutputChangeNotifyMask); | ^~~~~~~~~~~~~~~~~~~~~~~~ FScreen.c:236:3: note: each undeclared identifier is reported only once for each function it appears in FScreen.c:236:30: error: ‘RROutputChangeNotifyMask’ undeclared (first use in this function) 236 | RRScreenChangeNotifyMask | RROutputChangeNotifyMask); | ^~~~~~~~~~~~~~~~~~~~~~~~ FScreen.c: At top level: FScreen.c:240:37: error: unknown type name ‘XRRScreenChangeNotifyEvent’ 240 | monitor_output_change(Display *dpy, XRRScreenChangeNotifyEvent *e) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ FScreen.c: In function ‘scan_screens’: FScreen.c:293:2: error: unknown type name ‘XRRMonitorInfo’ 293 | XRRMonitorInfo *rrm; | ^~~~~~~~~~~~~~ FScreen.c:298:8: warning: implicit declaration of function ‘XRRGetMonitors’ [-Wimplicit-function-declaration] 298 | rrm = XRRGetMonitors(dpy, root, false, &n); | ^~~~~~~~~~~~~~ FScreen.c:298:6: warning: assignment to ‘int *’ from ‘int’ makes pointer from integer without a cast [-Wint-conversion] 298 | rrm = XRRGetMonitors(dpy, root, false, &n); | ^ FScreen.c:306:40: error: request for member ‘name’ in something not a structure or union 306 | char *name = XGetAtomName(dpy, rrm[i].name); | ^ FScreen.c:324:20: error: request for member ‘x’ in something not a structure or union 324 | m->si->x = rrm[i].x; | ^ FScreen.c:325:20: error: request for member ‘y’ in something not a structure or union 325 | m->si->y = rrm[i].y; | ^ FScreen.c:326:20: error: request for member ‘width’ in something not a structure or union 326 | m->si->w = rrm[i].width; | ^ FScreen.c:327:20: error: request for member ‘height’ in something not a structure or union 327 | m->si->h = rrm[i].height; | ^ FScreen.c:328:29: error: request for member ‘outputs’ in something not a structure or union 328 | m->si->rr_output = *rrm[i].outputs; | ^ FScreen.c:329:29: error: request for member ‘primary’ in something not a structure or union 329 | m->si->is_primary = rrm[i].primary > 0; | ^ FScreen.c: In function ‘FScreenInit’: FScreen.c:338:2: error: unknown type name ‘XRRScreenResources’ 338 | XRRScreenResources *res = NULL; ... FScreen.c:377:3: warning: implicit declaration of function ‘XRRFreeScreenResources’ [-Wimplicit-function-declaration] 377 | XRRFreeScreenResources(res); | ^~~~~~~~~~~~~~~~~~~~~~ make[2]: *** [Makefile:575: FScreen.o] Error 1 make[2]: Leaving directory '/home/me/Downloads/fvwm3-master/libs' make[1]: *** [Makefile:507: all-recursive] Error 1 make[1]: Leaving directory '/home/me/Downloads/fvwm3-master' make: *** [Makefile:448: all] Error 2 $>
Thanks

[ThomasAdam]

Hi @voltumna,

You need to install the XRandR header files. At least version 1.5

Then FVWM3 will compile.