Same error here with 0.8 in Arch, Xorg 1.10 : /bin/sh ../libtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -march=x86-64 -mtune=generic -O2 -pipe -fvisibility=hidden -I/usr/include/xorg -I/usr/include/pixman-1 -I../src -MT wizardpen.lo -MD -MP -MF .deps/wizardpen.Tpo -c -o wizardpen.lo wizardpen.c libtool: compile: gcc -DHAVE_CONFIG_H -I. -I.. -march=x86-64 -mtune=generic -O2 -pipe -fvisibility=hidden -I/usr/include/xorg -I/usr/include/pixman-1 -I../src -MT wizardpen.lo -MD -MP -MF .deps/wizardpen.Tpo -c wizardpen.c -fPIC -DPIC -o .libs/wizardpen.o In file included from wizardpen.c:77:0: wizardpen.h:134:1: warning: parameter names (without types) in function declaration wizardpen.h:138:54: error: expected declaration specifiers or '...' before 'IDevPtr' wizardpen.h:141:5: warning: parameter names (without types) in function declaration wizardpen.h:142:5: warning: parameter names (without types) in function declaration wizardpen.h:144:55: error: expected ')' before 'int' wizardpen.c:98:5: warning: initialization from incompatible pointer type wizardpen.c:200:38: error: expected ')' before 'local' wizardpen.c:301:38: error: expected declaration specifiers or '...' before 'IDevPtr' wizardpen.c: In function 'WizardPenPreInit': wizardpen.c:303:5: error: 'LocalDevicePtr' undeclared (first use in this function) wizardpen.c:303:5: note: each undeclared identifier is reported only once for each function it appears in wizardpen.c:303:20: error: expected ';' before 'local' wizardpen.c:304:5: warning: 'Xcalloc' is deprecated (declared at /usr/include/xorg/os.h:226) wizardpen.c:309:11: error: 'local' undeclared (first use in this function) wizardpen.c:314:19: error: 'dev' undeclared (first use in this function) wizardpen.c:316:20: error: 'XI86_POINTER_CAPABLE' undeclared (first use in this function) wizardpen.c:316:43: error: 'XI86_SEND_DRAG_EVENTS' undeclared (first use in this function) wizardpen.c:326:5: error: too many arguments to function 'xf86CollectInputOptions' /usr/include/xorg/xf86Xinput.h:180:23: note: declared here wizardpen.c:542:21: error: 'XI86_CONFIGURED' undeclared (first use in this function) wizardpen.c:567:9: warning: 'Xfree' is deprecated (declared at /usr/include/xorg/os.h:235) wizardpen.c: In function 'DeviceOn': wizardpen.c:602:5: error: 'LocalDevicePtr' undeclared (first use in this function) wizardpen.c:602:20: error: expected ';' before 'local' wizardpen.c:603:55: error: 'local' undeclared (first use in this function) wizardpen.c: In function 'DeviceOff': wizardpen.c:645:5: error: 'LocalDevicePtr' undeclared (first use in this function) wizardpen.c:645:20: error: expected ';' before 'local' wizardpen.c:646:55: error: 'local' undeclared (first use in this function) wizardpen.c: In function 'DeviceClose': wizardpen.c:670:5: error: 'LocalDevicePtr' undeclared (first use in this function) wizardpen.c:670:20: error: expected ';' before 'local' wizardpen.c:672:49: error: 'local' undeclared (first use in this function) wizardpen.c: In function 'ControlProc': wizardpen.c:680:5: error: 'LocalDevicePtr' undeclared (first use in this function) wizardpen.c:680:20: error: expected ';' before 'local' wizardpen.c:682:49: error: 'local' undeclared (first use in this function) wizardpen.c: In function 'DeviceInit': wizardpen.c:689:5: error: 'LocalDevicePtr' undeclared (first use in this function) wizardpen.c:689:20: error: expected ';' before 'local' wizardpen.c:690:55: error: 'local' undeclared (first use in this function) wizardpen.c:767:17: error: too few arguments to function 'InitValuatorAxisStruct' /usr/include/xorg/exevents.h:43:23: note: declared here wizardpen.c:777:17: error: too few arguments to function 'InitValuatorAxisStruct' /usr/include/xorg/exevents.h:43:23: note: declared here wizardpen.c:787:17: error: too few arguments to function 'InitValuatorAxisStruct' /usr/include/xorg/exevents.h:43:23: note: declared here wizardpen.c: At top level: wizardpen.c:829:30: error: expected ')' before 'local' wizardpen.c:1234:27: error: expected ')' before 'local' wizardpen.c:1284:34: error: expected ')' before 'local' wizardpen.h:134:13: warning: 'CloseProc' used but never defined wizardpen.h:141:17: warning: 'USBReadInput' used but never defined wizardpen.h:142:17: warning: 'USBQueryHardware' used but never defined make[2]: *** [wizardpen.lo] Error 1 make[2]: se sale del directorio `/tmp/yaourt-tmp-kagarrache/aur-xf86-input-wizardpen/src/xorg-input-wizardpen-0.8.0/src' make[1]: *** [all-recursive] Error 1 make[1]: se sale del directorio `/tmp/yaourt-tmp-kagarrache/aur-xf86-input-wizardpen/src/xorg-input-wizardpen-0.8.0' make: *** [all] Error 2