7.0 branch build error without "--disable-gdbtk"

[Hui Zhu <teawater@gmail.com>]

gcc -g -O2   -I. -I../../src/gdb -I../../src/gdb/common
-I../../src/gdb/config -DLOCALEDIR="\"/usr/local/share/locale\""
-DHAVE_CONFIG_H -I../../src/gdb/../include/opcode
-I../../src/gdb/../readline/.. -I../bfd -I../../src/gdb/../bfd
-I../../src/gdb/../include -I../libdecnumber
-I../../src/gdb/../libdecnumber  -I../../src/gdb/gnulib -Ignulib
-DMI_OUT=1 -DTUI=1  -DGDBTK  -Wall -Wdeclaration-after-statement
-Wpointer-arith -Wformat-nonliteral -Wno-pointer-sign -Wno-unused
-Wno-switch -Wno-char-subscripts -Werror -c -o posix-hdep.o -MT
posix-hdep.o -MMD -MP -MF .deps/posix-hdep.Tpo
../../src/gdb/posix-hdep.c
make[2]: *** No rule to make target
`../../src/gdb/gdbtk/generic/gdbtk.c', needed by `gdbtk.o'.  Stop.
make[2]: Leaving directory `/home/teawater/gdb/7/bgdb/gdb'
make[1]: *** [all-gdb] Error 2
make[1]: Leaving directory `/home/teawater/gdb/7/bgdb'
make: *** [all] Error 2

My configure is:
../src/configure --disable-sid --disable-rda --disable-binutils
--disable-gas --disable-ld --disable-gprof  --enable-targets=all
--enable-64-bits-bfd

My os is ubuntu x86 32.

Did I miss something?

Thanks,
hui