-head build error report

Linux jd-laptop 2.6.24-19-generic #1 SMP Wed Jun 4 16:35:01 UTC 2008
i686 GNU/Linux

Using built-in specs.
Target: i486-linux-gnu
Configured with: ../src/configure -v --enable-languages=c,c
++,fortran,objc,obj-c++,treelang --prefix=/usr --enable-shared
--with-system-zlib --libexecdir=/usr/lib --without-included-gettext
--enable-threads=posix --enable-nls
--with-gxx-include-dir=/usr/include/c++/4.2 --program-suffix=-4.2
--enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc
--enable-mpfr --enable-targets=all --enable-checking=release
--build=i486-linux-gnu --host=i486-linux-gnu --target=i486-linux-gnu
Thread model: posix
gcc version 4.2.3 (Ubuntu 4.2.3-2ubuntu7)

de -D_GNU_SOURCE -c -o gistget.o gistget.c
In file included from gistget.c:21:
../../../../src/include/pgstat.h:15:36: error: portability/instr_time.h:
No such file or directory
In file included from gistget.c:21:
../../../../src/include/pgstat.h:326: error: expected
specifier-qualifier-list before ‘instr_time’
../../../../src/include/pgstat.h:566: error: expected
specifier-qualifier-list before ‘instr_time’
make[4]: *** [gistget.o] Error 1
make[4]: Leaving directory
`/home/jd/repos/pgsql/src/backend/access/gist'
make[3]: *** [gist-recursive] Error 2
make[3]: Leaving directory `/home/jd/repos/pgsql/src/backend/access'
make[2]: *** [access-recursive] Error 2
make[2]: Leaving directory `/home/jd/repos/pgsql/src/backend'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/jd/repos/pgsql/src'
make: *** [all] Error 2