Running all xfce4 components from svn here.   xfce4-mixer doesn't build on my
i686 system.   autogen.sh and configure run fine.  Soon after 'make' enters the
panel-plugin subdirectory, it fails here:

if i686-pc-linux-gnu-gcc -DHAVE_CONFIG_H -I. -I. -I.. -I../include  
-I../include -DPACKAGE_LOCALE_DIR=\"/usr/share/locale\" -I/usr/include/xfce4
-I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/xfce4
-I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/pango-1.0
-I/usr/include/cairo -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include
-I/usr/include/atk-1.0   -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include
-I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0
-I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include   -I/usr/include/libxml2
-I/usr/include/xfce4/ -I/usr/include/xfce4 -I/usr/include/gtk-2.0
-I/usr/lib/gtk-2.0/include -I/usr/include/pango-1.0 -I/usr/include/cairo
-I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/atk-1.0  
-march=pentium4 -O2 -fomit-frame-pointer -pipe -I/usr/include/alsa   -MT
xfce4_mixer_plugin-plugin.o -MD -MP -MF ".deps/xfce4_mixer_plugin-plugin.Tpo" -c
-o xfce4_mixer_plugin-plugin.o `test -f 'plugin.c' || echo './'`plugin.c; \
then mv -f ".deps/xfce4_mixer_plugin-plugin.Tpo"
".deps/xfce4_mixer_plugin-plugin.Po"; else rm -f
".deps/xfce4_mixer_plugin-plugin.Tpo"; exit 1; fi
In file included from plugin.c:13:
xfce-mixer-prefbox.h:61: error: syntax error before "CommandOptions"
xfce-mixer-prefbox.h:61: warning: no semicolon at end of struct or union
xfce-mixer-prefbox.h:64: error: syntax error before '}' token
plugin.c: In function `mixer_save':
plugin.c:71: warning: assignment makes pointer from integer without a cast
plugin.c: In function `mixer_construct':
plugin.c:165: warning: assignment makes pointer from integer without a cast
plugin.c:170: warning: assignment makes pointer from integer without a cast
make: *** [xfce4_mixer_plugin-plugin.o] Error 1


Reproducible: Always
Steps to Reproduce:
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