libtoolize 1.4.3: broken symlinks

[Akim Demaille]

Hi People,

libtoolize fails to detect when it installs broken symlinks:

/tmp/foo % cat configure.in                                       
AC_INIT
AC_CONFIG_AUX_DIR(.)
AC_CANONICAL_SYSTEM
AC_PROG_LIBTOOL
/tmp/foo % rm ltmain.sh                                           
/tmp/foo % libtoolize --copy                                      
cp: cannot stat `/usr/share/libtool/config.guess': No such file or directory
libtoolize: cannot copy `/usr/share/libtool/config.guess' to `config.guess'
cp: cannot stat `/usr/share/libtool/config.sub': No such file or directory
libtoolize: cannot copy `/usr/share/libtool/config.sub' to `config.sub'
/tmp/foo % libtoolize --force
/tmp/foo % ls -l config.guess                                     
lrwxrwxrwx    1 akim     lrde           31 2002-10-28 10:32 config.guess -> 
/usr/share/libtool/config.guess
/tmp/foo % ls -l /usr/share/libtool/config.guess                  
ls: /usr/share/libtool/config.guess: No such file or directory