compile problems with patched xstroke

Hi,

I'm trying to compile the patched xstroke for matchbox 
"xstroke-mallum.tgz" for i386 but it always gives me the following 
error. Any ideas ?

gcc -g -ansi -ansi-error -Wall -pedantic -fsigned-char 
-I/usr/include/freetype2     -I/usr/X11R6/include   -Dlinux 
-D__powerpc__ -D_POSIX_C_SOURCE=199309L -D_POSIX_SOURCE -D_XOPEN_SOURCE 
-D_BSD_SOURCE -D_SVID_SOURCE     -DFUNCPROTO=15 -DNARROWPROTO       -c 
-o action_item.o action_item.c
In file included from control_win.h:26,
                 from xstroke.h:36,
                 from args.h:46,
                 from rec.h:62,
                 from action_item.c:21:
tray.h:49:26: warning: ISO C does not permit named variadic macros
action_item.c: In function `action_keysym_data_init':
action_item.c:130: `XK_ISO_Lock' undeclared (first use in this function)
action_item.c:130: (Each undeclared identifier is reported only once
action_item.c:130: for each function it appears in.)
action_item.c:130: `XK_ISO_Last_Group_Lock' undeclared (first use in 
this function)
make: *** [action_item.o] Error 1

rgds,
ho soon