CVS source fail to build in Debian/Sid

[Petter Reinholdtsen <pere at hungry dot com>]

I just tried to build the CVS version of glibc in Debian Sid.  I made
a libc/BUILD directory, and used this to configure it:

  ../configure --disable-sanity-checks --prefix=/tmp/glibc

I am only interested in the localedata part, so I did not fetch a
threads package.  I was told by configure to add the flag
--disable-sanity-checks to get going without threads on linux.

The source fail to in sysdeps/unix/sysv/linux/system.c, with the
following error message:

  In file included from ../sysdeps/unix/sysv/linux/system.c:50:
  ../sysdeps/posix/system.c: In function `do_system':
  ../sysdeps/posix/system.c:78: warning: statement with no effect
  ../sysdeps/posix/system.c:84: warning: statement with no effect
  ../sysdeps/unix/sysv/linux/system.c: In function `cancel_handler':
  ../sysdeps/unix/sysv/linux/system.c:68: `quit' undeclared (first use
    in this function)
  ../sysdeps/unix/sysv/linux/system.c:68: (Each undeclared identifier
    is reported only once
  ../sysdeps/unix/sysv/linux/system.c:68: for each function it appears in.)
  ../sysdeps/unix/sysv/linux/system.c:69: `intr' undeclared (first use
    in this function)
  make[2]: *** [/usr/src/glibccvs/libc/BUILD/stdlib/system.o] Error 1

Any ideas to what I do wrong?