In file included from /usr/include/xorg/xf86Crtc.h:26,
                 from via_ums.c:27:
/usr/include/xorg/randrstr.h:36: error: expected specifier-qualifier-list before 'Bool'
/usr/include/xorg/randrstr.h:47: error: expected specifier-qualifier-list before 'Bool'
/usr/include/xorg/randrstr.h:51: error: expected declaration specifiers or '...' before '*' token
/usr/include/xorg/randrstr.h:51: error: expected ')' before 'pScreen'
/usr/include/xorg/randrstr.h:56: error: expected declaration specifiers or '...' before '*' token
/usr/include/xorg/randrstr.h:56: error: expected ')' before 'pScreen'
/usr/include/xorg/randrstr.h:57: error: expected declaration specifiers or '...' before '*' token
/usr/include/xorg/randrstr.h:57: error: expected declaration specifiers or '...' before 'ScreenPtr'
/usr/include/xorg/randrstr.h:57: error: 'Bool' declared as function returning a function
/usr/include/xorg/randrstr.h:60: error: expected specifier-qualifier-list before 'RRSetConfigProcPtr'
/usr/include/xorg/randrstr.h:99: error: expected ')' before 'pScreen'
/usr/include/xorg/randrstr.h:105: error: expected ')' before 'pScreen'
/usr/include/xorg/randrstr.h:114: error: expected ')' before 'pScreen'
/usr/include/xorg/randrstr.h:119: error: expected ')' before 'pScreen'
/usr/include/xorg/randrstr.h:122: error: expected ')' before 'pScreen'
/usr/include/xorg/randrstr.h:125: error: expected ')' before 'pScreen'
/usr/include/xorg/randrstr.h:131: error: expected ')' before 'pScreen'
/usr/include/xorg/randrstr.h:134: error: expected ')' before 'pScreen'
/usr/include/xorg/randrstr.h:137: error: expected ')' before 'pScreen'
/usr/include/xorg/randrstr.h:143: error: expected ')' before 'pScreen'
In file included from /usr/include/xorg/misc.h:84,
                 from /usr/include/xorg/xf86str.h:38,
                 from /usr/include/xorg/xf86.h:40,
                 from /usr/include/xorg/xf86Modes.h:35,
                 from /usr/include/xorg/xf86Crtc.h:30,
                 from via_ums.c:27:
/usr/include/X11/Xdefs.h:49: error: conflicting types for 'Bool'
/usr/include/xorg/randrstr.h:57: error: previous declaration of 'Bool' was here
via_ums.c: In function 'UMSPreInit':
via_ums.c:712: error: 'bridge' undeclared (first use in this function)
via_ums.c:712: error: (Each undeclared identifier is reported only once
via_ums.c:712: error: for each function it appears in.)
make[4]: *** [via_ums.lo] Error 1
make[3]: *** [all-recursive] Error 1
make[2]: *** [all] Error 2
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2