Bizarre error when building xgalaga!

[Scott Heftler]

b6$ sudo port install xgalaga
--->  Fetching xgalaga
--->  Attempting to fetch xgalaga_2.0.34.orig.tar.gz from
http://downloads.sourceforge.net/xgalaga
--->  Verifying checksum(s) for xgalaga
--->  Extracting xgalaga
--->  Applying patches to xgalaga
--->  Configuring xgalaga
--->  Building xgalaga
Error: Target org.macports.build returned: shell command " cd

"/opt/local/var/macports/build/_opt_local_var_macports_sources_\
rsync.macports.org_release_ports_games_xgalaga/work/xgalaga-2.0.34"

&& make all " returned error 2
Command output: for i in libsprite; do cd $i ; make ; done
/usr/bin/gcc-4.0 -I. -I.. -O2  -I/usr/X11/include -DHAVE_CONFIG_H   -c
-o border.o border.c
/usr/bin/gcc-4.0 -I. -I.. -O2  -I/usr/X11/include -DHAVE_CONFIG_H   -c
-o cursor.o cursor.c
/usr/bin/gcc-4.0 -I. -I.. -O2  -I/usr/X11/include -DHAVE_CONFIG_H   -c
-o init.o init.c
/usr/bin/gcc-4.0 -I. -I.. -O2  -I/usr/X11/include -DHAVE_CONFIG_H   -c
-o misc.o misc.c
/usr/bin/gcc-4.0 -I. -I.. -O2  -I/usr/X11/include -DHAVE_CONFIG_H   -c
-o sector.o sector.c
/usr/bin/gcc-4.0 -I. -I.. -O2  -I/usr/X11/include -DHAVE_CONFIG_H   -c
-o buffer.o buffer.c
/usr/bin/gcc-4.0 -I. -I.. -O2  -I/usr/X11/include -DHAVE_CONFIG_H   -c
-o data.o data.c
In file included from data.c:19:
data.h:69: error: array type has incomplete element type
data.h:72: error: array type has incomplete element type
make[1]: *** [data.o] Error 1
make: *** [subdirs] Error 2

Error: Status 1 encountered during processing.

- - - - - -

Any ideas?